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Files & Documents: Archives

6 apps

ZIP · ConvertArchive Group SplitterSplit a set of files into separate ZIP downloads. Choose which files belong in each group and keep each file whole.GZIP / ZIP · ConvertBatch Text CompressorCompress several text files to GZIP at once. See how much space each file saves and download all the results together.GZIP · ConvertGZIP WorkbenchCompress a file to GZIP or open a GZIP file. Compare file sizes and download the result without uploading your file.ZIP · ConvertPassword ZIP PackagerMake a password-protected ZIP file on your device. Choose your files and a password, then download the encrypted archive.ZIP · ConvertZIP Contents InspectorSee what is inside a ZIP file before you unzip it. Preview text and download the files you choose on your own device.ZIP · ConvertZIP WorkspaceEdit a ZIP file online. Add files, rename them or remove items, then download a new ZIP without uploading your files.

Files & Documents: Document & Data Services

11 apps

ZIP / PNG · ConvertImage Montage BuilderArrange a ZIP of images into a labeled contact sheet with adjustable columns and spacing.Image / PNG / JPEG / WebP · ConvertLegacy Image Format ConverterConvert supported bitmap, TIFF, icon, and legacy raster image files into modern web formats.Audio / Video · ConvertMedia Conversion ServiceConvert an uploaded audio or video file with explicit MP4, WebM, MP3, or WAV output presets.PDF · ConvertPDF Attachment ManagerList embedded PDF attachments, extract them into a ZIP, or add a new text attachment to a copy.PDF · ConvertPDF Contact SheetTurn PDF pages into a numbered thumbnail grid for reviewing and printing a document.PDF · ConvertPDF Embedded Asset ExtractorExtract images and supported font files from a PDF. Choose pages and download the files together in a labeled ZIP.PDF · ConvertPDF Web Delivery OptimizerPrepare a PDF for faster page loading in supported viewers. Download a reorganized copy that can load in parts.PDF · ConvertPDF Workflow Recipe BuilderApply several PDF changes in one run. Choose pages, rotate them, edit document details and compress a new copy.PDF · ConvertReport Table DigitizerTurn a table in a text-based PDF report into CSV. Review and edit the cells before downloading the table.JSON / PPTX · ConvertSlide Deck GeneratorMake an editable PowerPoint from slide titles and bullet points. Add speaker notes and supported images, then download a PPTX file.PDF · ConvertTable Extraction ComparisonCompare two ways to extract PDF tables. Use page borders or aligned text to find cells, then download each result as CSV.

Files & Documents: Document Services

6 apps

Markdown / DOCX / EPUB · ConvertAcademic Manuscript ExporterTurn a Markdown manuscript into Word, HTML or EPUB. Keep headings, lists and tables in a file you can read or edit.DOCX / Markdown / HTML / EPUB · ConvertDocument Format ConverterQueue documents for conversion to DOCX, Markdown, HTML, or EPUB, review each job, and download the results together.PDF / JSON · ConvertPDF Layout InspectorInspect a PDF's page sizes and text positions. See where words are placed and how they are read from the file.PDF / CSV · ConvertPDF Table ExtractorExtract candidate tables from text-based PDF pages into a CSV report with page and table references.PPTX / JSON · ConvertPowerPoint Content ExtractorExtract slide text, speaker notes, and image references from a PowerPoint deck.DOCX / CSV · ConvertWord Document Style AuditorReview paragraph styles, headings, table counts, and direct formatting in a Word document.

Files & Documents: Documents & Ebooks

11 apps

DOCX · ConvertDOCX Text CollectorCollect text from Word documents into a searchable reading workspace.DOCX · ConvertDOCX to Clean HTMLConvert a Word DOCX file to clean HTML. Edit the code, preview the page and download the result on your device.EPUB · ConvertEPUB Chapter ExtractorSave selected EPUB chapters as HTML files. Choose the chapters you need for your own reading or study.EPUB · ConvertEPUB Metadata InspectorLook inside an EPUB ebook. See its title, authors, cover and chapter list without uploading the book.EPUB · ConvertParallel Reading NotebookRead an EPUB beside private passage notes and export your study notebook.EPUB · ConvertPersonal EPUB ReaderRead a local ebook with chapter navigation, adjustable text size, and saved bookmarks.XLSX / ODS / CSV · ConvertSpreadsheet Format ConverterConvert supported XLSX, ODS, and CSV data between spreadsheet formats.DOCX · ConvertWord Document PreviewerRead a DOCX file in a clean browser preview without a desktop editor.DOCX · ConvertWord Template Layout CheckerFill a Word template with your own details. Preview the result beside your input and download the completed DOCX file.XLSX / ODS · ConvertWorkbook Sheet SplitterSelect worksheets and export each as its own XLSX or CSV file.XLSX / ODS / CSV · ConvertXLSX Data InspectorInspect workbook sheets, identify blank columns, and export a selected table.

Files & Documents: File Inspection

4 apps

SHA-256 / SHA-512 · ConvertFile Checksum CalculatorCalculate a SHA-256 or SHA-512 file hash locally and compare it with an expected checksum.SHA-256 / SHA-512 · ConvertFile Checksum ManifestCreate a SHA-256 or SHA-512 checksum list for several files. Save it to help check later whether the files have changed.ICC / ICM · ConvertICC Profile ComparerCompare two ICC color profiles side by side. Check how their stored color settings and data sections differ.ICC / ICM · ConvertICC Profile InspectorInspect an ICC color profile. See its version, color space, device type and stored color settings.

Files & Documents: Files & Documents

4 apps

JSON / DOCX · ConvertMeeting Minutes Word ExporterTurn meeting details, agenda items, decisions, and actions into an editable Word document.PDF / CSV / ZIP · ConvertPDF CSV Form FillerFill a PDF form from CSV rows and download one completed PDF per record.JSON / XLSX · ConvertSpreadsheet Report BuilderMake an Excel report with several sheets. Add tables, clear headings and number totals, then download an XLSX file.JSON / DOCX · ConvertWord Template BuilderGenerate a formatted Word letter from a title, recipient, date, and paragraphs.

Files & Documents: Writing & Editing

8 apps

Delta JSON · ConvertDocument Revision TimelineReplay saved changes to a Quill document. Move between versions and download a copy of the draft at any step.Markdown / HTML · ConvertDocumentation Lint PreviewCheck how Markdown looks under different rules. Compare previews and find lines that may display differently in another editor.Markdown / HTML · ConvertMarkdown Document PrinterPrint Markdown or save it as a PDF. Choose the paper size, margins and text style, then preview your document.Markdown / HTML · ConvertMarkdown Extension PlaygroundTry Markdown tables, links and other options. Switch each rule on or off and compare the preview with the HTML.Rich text / HTML / JSON · ConvertNewsletter Draft ComposerWrite a newsletter with a subject and preview text. Check its phone layout, save a draft and export HTML for your email service.Delta JSON · ConvertRich Text Change ViewerCompare two Quill Delta documents. Find changed words and formatting, then download the steps that turn one draft into the other.Rich text / HTML / JSON · ConvertRich Text Writing PadWrite and format notes online. Add headings, lists and links, save drafts in this browser and download a copy.HTML / Markdown · ConvertWeb Clipping FormatterTurn pasted article HTML into a clean Markdown note. Keep the title, author, source link and your own comments together.

Images & Design: 3D Mesh Processing

2 apps

STL / PLY / OBJ · Convert3D Mesh Health CheckerCheck a 3D mesh for holes and other shape issues. See its size, triangle count and surface measurements.STL / PLY / OBJ · ConvertMesh Format ConverterConvert a triangle mesh between STL, PLY, and OBJ with a geometry summary.

Images & Design: Diagram Editors

2 apps

Draw.io / XML / SVG / PNG · ConvertDiagram Format WorkspaceOpen and edit Draw.io XML files or editable SVG and PNG diagrams. Keep a project copy or export an image to share.Draw.io / XML / SVG / PNG · ConvertEmbedded Diagram DeskMake diagrams with shapes, arrows, pages and layers. Edit in a Draw.io workspace and save a copy to your device.

Images & Design: Diagrams & Graphs

1 app

Graph JSON / SVG / PNG / CSV · ConvertFlowchart EditorMake a flowchart with steps, decisions and arrows. Drag shapes into place, label connections and save an editable diagram.

Images & Design: Document & Data Services

1 app

Font / WOFF2 / TTF · ConvertFont Subset ServiceCreate a smaller font containing the characters needed for a specific page or design.

Images & Design: Drawing & Wireframes

2 apps

Excalidraw / PNG / SVG · ConvertLightweight WhiteboardDraw shapes, arrows and freehand ideas on a clean local whiteboard with editable text, image attachments, grouping and reusable project files.Excalidraw / PNG / SVG · ConvertWireframe Sketch KitSketch product screens with reusable cards, navigation, buttons, forms and device layouts, then save an editable project or export an image.

Images & Design: Fonts & Vectors

5 apps

Font · ConvertFont Character Coverage CheckerCheck whether a font has every character in your text. Find missing letters and symbols before using it in a design.TTF / OTF / WOFF · ConvertFont File InspectorInspect a TTF, OTF or WOFF font file. See its name, style, character coverage and other font details.SVG · ConvertSVG Cleanup ComparerCompare original SVG markup with an optimized version and inspect the exact lines that changed.SVG · ConvertSVG OptimizerReduce SVG markup, remove redundant data, and download a lighter vector file with a visual preview.SVG · ConvertText to SVG OutlinesUse your own font to turn a line of text into downloadable SVG paths.

Images & Design: Layout & Design

1 app

JSON / CSS / HTML · ConvertResponsive Layout SketcherSketch a clean grid for phone, tablet and desktop. Arrange each breakpoint independently, preview any width and export usable HTML and CSS.

Text & Writing: Language & Analysis

4 apps

JSON · ConvertLanguage DetectorFind the likely language of a piece of text. Compare possible matches and see which results need a closer look.CSV / JSON / ZIP · ConvertMultilingual CSV SorterSort CSV rows by language. Check the suggested language for each row, fix mistakes and download a file for each language.CSV / JSON / ZIP · ConvertReading Vocabulary ProfilerCompare the words in two texts. Count each word, find words they share and see each match in the original text.JSON / CSV / ZIP · ConvertText Analytics DeskCount words and sentences in English text. Explore parts of speech, dates and other details, then download the results.

Text & Writing: Language Experiments

2 apps

CSV / JSON / ZIP · ConvertDocument Similarity FinderCompare the words in up to 60 short documents. Rank similar pairs, see what they share and download every comparison.CSV / JSON / ZIP · ConvertText Classification SandboxTeach a small model to label text using your examples. Check it on separate test text and download the predictions and results.

Text & Writing: Speaking & Presenting

1 app

Scrolling script / TXT · ConvertSpeech TeleprompterRead a scrolling script while you practise a speech or record a video. Adjust the speed, font size and mirror direction on a light reading screen.

Text & Writing: Studying & Practice

1 app

Question bank / Retry history · ConvertPractice Test Mistake NotebookTurn missed practice questions into a personal learning notebook. Save your incorrect answer, the explanation, and a date to try again.

Text & Writing: Work & Job Hunting

1 app

Question bank / CSV · ConvertInterview Answer NotebookBuild a personal bank of interview questions and prepared answers. Organize by skill and link questions to upcoming interview stages.

Video & Audio: Audio Analysis

2 apps

Audio / PNG · ConvertAudio Spectrogram LabSee the frequencies in an audio file over time. Compare spectrogram settings and download charts for closer study.Audio / CSV · ConvertMusic Tempo & Beat ExplorerEstimate a recording's tempo in beats per minute. Check beat marks on its waveform and download their times.

Video & Audio: Music & Sound

16 apps

ABC / SVG / MIDI · ConvertABC Notation EditorWrite ABC music notation and see the score. Listen to the tune and download ABC, SVG or MIDI files.Local sound loops · ConvertAmbient Sound MixerMix your own sound loops. Set each volume, choose which clips repeat and use a sleep timer to stop playback.Waveform / CSV / JSON · ConvertAudio Clip MarkerMark clips on an audio waveform. Set exact start and end times, listen to each section and save the timestamps.Features / Charts / CSV · ConvertAudio Feature ExplorerExplore changes in an audio recording. See charts of sound level and frequency features, then download the measured values.ABC / SVG / MIDI · ConvertFolk Tune TransposerTranspose an ABC folk tune to a new key. Preview the score, listen to the result and download the rewritten tune.Listening practice · ConvertInterval Ear TrainerPractise hearing the distance between two notes. Choose your musical intervals, listen and check your answers.Live filters / Pan / Echo · ConvertLive Audio Effects PlaygroundTry live effects on an audio file. Adjust volume, filters, left-right balance and echo while listening to the result.MIDI · ConvertMIDI Piano-Roll InspectorOpen a MIDI file and see its notes on a piano roll. Explore tracks and tempo changes, listen and export note data.MIDI · ConvertMIDI TransposerMove MIDI notes up or down in pitch. Choose tracks and note ranges while keeping timing and other MIDI events.Chapters / VTT / CSV · ConvertPodcast Chapter EditorAdd chapters to a podcast while you listen. Name each chapter, adjust its time and download the chapter list.Notation / Tap timing · ConvertRhythm Reading TrainerPractise reading and tapping musical rhythms. Listen to a pattern, tap along and see how close your timing was.Notes / Chords / JSON · ConvertScale & Chord FinderFind notes and chords in major and minor scales. See them on a keyboard and listen to each scale or chord.ABC / SVG / MIDI · ConvertSheet Music Snippet MakerMake a short piece of sheet music from notes and durations. Choose the clef, time signature and tempo, then save the score.Sound pads / Shortcuts · ConvertSoundboard BuilderMake a soundboard from your own audio clips. Name each pad, set volumes and play sounds with buttons or keyboard shortcuts.Left / Right / Both · ConvertStereo Channel TesterTest your left and right audio channels. Play a tone, adjust its pitch and run an automatic channel check.Comparative features / CSV · ConvertTimbre Comparison ToolCompare the tone and sound level of two recordings. View matching charts and download their measured differences.

Video & Audio: Music Practice

2 apps

Live pitch / Hz · ConvertMicrophone Instrument TunerTune a single instrument note using your microphone. See the nearest note, frequency and cents sharp or flat with standard A4 = 440 Hz tuning.Live audio · ConvertMusic Practice MetronomePractise with a steady beat from 30 to 240 BPM. Choose quarter, eighth or sixteenth notes, adjust the volume, and follow the visual beat markers.

Video & Audio: Subtitles

4 apps

SRT / VTT · ConvertSRT ↔ VTT ConverterConvert subtitle timestamps between SubRip and WebVTT and download the new subtitle file.CSV · ConvertSubtitle Language WorksheetTurn subtitles into a study worksheet with timestamps, original lines, and space for your translation.SRT / VTT · ConvertSubtitle Overlap CheckerFind overlapping subtitle cues and short gaps in an SRT or WebVTT file.SRT / VTT · ConvertSubtitle Reading Speed CheckerMeasure characters per second for every subtitle cue and find lines that may be too fast to read.

Data & Calculators: Charts & Data

15 apps

Data & Calculators: Cooking & Baking

1 app

Recipe / TXT · ConvertPizza Dough CalculatorCalculate flour, water, salt and yeast for homemade pizza. Choose your dough-ball count, weight and hydration, then save or print your recipe.

Data & Calculators: Data File Services

1 app

Parquet / ZIP / CSV / JSON · ConvertParquet ExplorerOpen a Parquet file and explore its rows and columns. Filter or group rows, preview the results and download a data report.

Data & Calculators: Diagrams & Graphs

13 apps

Data & Calculators: Document & Data Services

11 apps

CSV / JSON recipe · ConvertCSV Transformation ServiceSelect, filter and clean CSV columns with a recipe. The service processes rows in small groups and returns a new CSV.CSV / JSON recipe · ConvertData Cleaning StudioClean a CSV table with repeatable steps. Rename columns, fix values and filter rows, then download the cleaned table.CSV / JSON recipe · ConvertData Pipeline PreviewerSee what each step in a CSV data pipeline changes. Review row counts and sample values before saving the final table.CSV / PNG · ConvertDimensionality Reduction ExplorerTurn many number columns into a 2D PCA chart. Explore patterns and see how much of the data's variation the chart keeps.GeoJSON · ConvertGeometry Repair WorkbenchCheck GeoJSON shapes for errors such as crossing polygon edges. Try repairs and compare the results before using the new file.GeoJSON / CSV · ConvertGIS Table Join DeskAdd CSV data to a GeoJSON map by matching a shared field. Check which records matched and download the combined file.JSON · ConvertLinear Optimization WorkbenchSolve a linear optimization problem with limits on its variables. See the best result and check how each constraint is met.Math / JSON · ConvertMath Expression Code GeneratorTurn a math expression into C, JavaScript or Python code. Name the variables and copy or download the result.GeoJSON · ConvertSpatial Dataset CleanupClean a GeoJSON dataset and change its coordinate system. Review shape errors, attempt repairs and download a new copy.Math / JSON · ConvertSymbolic Equation SolverSolve a supported equation with one unknown. Find exact roots when possible and compare their decimal values.CSV / JSON · ConvertTabular Model Training LabTrain simple models from number columns in a CSV file. Test them on separate rows and compare their scores.

Data & Calculators: Kitchen & Groceries

1 app

Price comparison / CSV · ConvertUnit-Price Shopping ComparisonCompare grocery pack sizes by price per kilogram, litre or item. Enter final prices and quantities to find the lowest unit price.

Data & Calculators: Local SQL

5 apps

CSV / JSON / SQL · ConvertCSV SQL WorkbenchRun SQL queries on CSV files in your browser. Check column types, combine tables and download your results.CSV / JSON / SQL · ConvertJSON SQL Query ToolQuery JSON data with SQL on your device. Explore tables and nested values, then download the results.SQLite / SQL / CSV / JSON · ConvertSQL Practice SandboxLearn SQL with a working sample database, eight guided exercises, hints, checked results and reusable query notebooks.SQLite / SQL / CSV / JSON · ConvertSQLite File ExplorerOpen a SQLite database on your device. Browse tables, inspect their links and download query results without uploading the file.CSV / JSON / SQL · ConvertTable Join BuilderJoin CSV or JSON tables by matching columns. Preview the SQL, choose how to keep unmatched rows and download the combined data.

Data & Calculators: Maps & GIS

14 apps

Data & Calculators: Numbers & Reports

2 apps

CSV / JSON · ConvertLocalized Report FormatterFormat numbers and prices in a CSV or JSON table for different regions. Check errors and download your finished report.CSV / JSON · ConvertNumber Formatting PlaygroundSee how numbers, prices and percentages look in different languages and regions. Compare formats without changing the values.

Data & Calculators: Personal Notebooks

4 apps

Notebook / JSON / CSV · ConvertOffline Inventory NotebookKeep belongings, quantities, photo previews and locations in a searchable local notebook, with complete backups and CSV import.Notebook / JSON / CSV · ConvertOffline Recipe NotebookSave recipes with ingredient lists, ordered steps and photos. Search locally, scale quantities and export a clean printable recipe.Notebook / JSON / CSV · ConvertPersonal Snippet VaultKeep reusable text and code snippets in searchable categories, with tags, favorites, exact-text copying and portable exports.Notebook / JSON / CSV · ConvertReading & Watchlist TrackerKeep books, films, series and courses together. Track progress, ratings, dates and notes in a private, searchable local collection.

Data & Calculators: Planning & Productivity

6 apps

Layout / JSON / HTML · ConvertDashboard Layout ExporterDesign a dashboard grid and export its layout as JSON. Arrange widgets and save their types, positions and sizes.Project / CSV · ConvertLightweight Project PlannerTurn tasks, dates and dependencies into an editable project timeline, with milestones, progress and portable backups.Layout / JSON / HTML · ConvertPersonal Dashboard ArrangerMake a calm dashboard of clocks, notes, metrics and small data tables. Arrange every widget and keep an editable local backup.Project / CSV · ConvertPersonal Kanban BoardGive every task a place. Move cards between columns, add checklists and keep your board on your device.Project / CSV · ConvertRenovation Timeline PlannerLay out renovation phases, trades and milestones in one clear, printable timeline.Layout / JSON / HTML · ConvertStudy Dashboard BuilderGive your study day a little structure. Arrange focus timers, notes and assignment panels in a private, saved workspace.

Data & Calculators: Scientific Data

3 apps

JSON · ConvertGraph Algorithm WorkbenchExplore a network's connections and groups. Count links and find the path with the fewest steps between two nodes.CSV / Filter coefficients · ConvertSignal Filter DesignerDesign a digital Butterworth filter. Choose frequencies to keep or reduce, preview its response and download the filter settings.CSV · ConvertTime-Series ResamplerGroup timestamped CSV measurements by hour, day, week or month. Choose how to summarize the values and download the result.

Data & Calculators: Scientific File Services

3 apps

SDF / MOL / SMILES / ZIP · ConvertChemical File ConverterConvert chemical structures between SDF, MOL and SMILES. Preview molecules, check errors and download the converted files.GeoTIFF / JSON / PNG · ConvertGeoTIFF InspectorLook inside a GeoTIFF map image. See its image bands, map coordinates and sample values, with an adjustable preview.GeoTIFF · ConvertRaster Crop ServiceCrop a GeoTIFF to a rectangle or polygon. Keep the map's coordinate grid and download the cropped image.

Data & Calculators: Tables & Data

2 apps

CSV / JSON / ZIP · ConvertEditable Data TableOpen CSV or JSON as an editable table. Keep exact text, change individual cell types, filter rows and save your work privately.CSV / JSON / ZIP · ConvertRecord Review QueueReview a table row by row, flag problems, attach notes and export accepted, rejected and pending records without uploading your data.

Data & Calculators: Time & Calendars

6 apps

Report / CSV / JSON · ConvertCalendar Conflict FinderFind overlapping events in an ICS calendar. Choose event series and see when each clash starts and how long it lasts.Calendar / ICS / CSV · ConvertCommunity Event CalendarKeep a clear calendar of local events, with categories, locations, search and a portable agenda to share.Calendar / ICS / CSV · ConvertCourse Schedule ExporterTurn weekly classes, term dates and skipped days into a time-zone-aware calendar you can import anywhere.Report / CSV / JSON · ConvertDaylight-Saving Transition ExplorerSee when clocks change in a time zone. Find skipped or repeated times and compare each local time with UTC.Report / CSV / JSON · ConvertRecurring Schedule DebuggerCheck which dates a calendar repeat rule creates. Find skipped dates and see how time zones and clock changes affect the schedule.Calendar / ICS / CSV · ConvertWeekly Time-Block PlannerMake room for your tasks in a weekly calendar. Drag, resize, edit and save your plan on your device.

Data & Calculators: Work & Job Hunting

1 app

Activity report / CSV · ConvertJob-Search Progress DashboardReview daily applications, current pipeline statuses, recorded stage outcomes and upcoming follow-ups from your saved job-search records.

Developer Tools: Architecture & Documentation

1 app

Project JSON / HTML / Mermaid / SVG / PNG / ZIP · ConvertArchitecture Documentation BuilderMake a system architecture document with Mermaid diagrams and notes. Download one HTML guide or a bundle of diagrams.

Developer Tools: Code & Configuration

8 apps

HTML / Markdown · ConvertHTML to Markdown ConverterTurn HTML headings, links, lists, and emphasis into readable Markdown for your notes or documentation.JSON5 / JSON · ConvertJSON5 to JSON ConverterTurn commented JSON5 with trailing commas and unquoted keys into strict, formatted JSON.SQL · ConvertSQL FormatterMake SQL easier to read with consistent indentation and keyword casing. Choose the dialect your database uses.SQL · ConvertSQL Query ComparerFormat two SQL queries consistently, then see which lines were added, removed, or kept.TOML / JSON · ConvertTOML ↔ JSON ConverterConvert TOML configuration to JSON and convert JSON objects back to TOML.TOML · ConvertTOML Config ValidatorCheck TOML syntax, find parsing errors, and inspect the values behind each configuration key.YAML / JSON · ConvertYAML ↔ JSON ConverterConvert YAML to readable JSON, or turn JSON into clean YAML. Check nested data without uploading a file.YAML · ConvertYAML Tree InspectorExplore YAML paths, value types, and nested settings in one readable table.

Developer Tools: Code & Validation

17 apps

Code / Diff · ConvertCode Formatter DeskFormat JavaScript, TypeScript, JSON, CSS, HTML, Markdown or YAML. Choose spacing and style, then review the changes.SVG / PNG · ConvertCode Snippet Image MakerTurn code into a clear SVG or PNG image. Choose colors, add a title and show line numbers for sharing or teaching.Code / Token tree · ConvertCode Token InspectorExplore how a code highlighter labels words and symbols. See which parts are keywords, strings, comments and other code types.JSON5 / JSON · ConvertConfiguration Comment EditorEdit a JSON5 file with comments. Check its values and download standard JSON for apps that do not accept comments.Text / JSON · ConvertCSV Field ValidatorApply named validation rules to CSV columns and download a row-by-row error report.HTML / CSS · ConvertCustom Code Highlighter BuilderChoose your own code highlight colors. Preview the theme and download its CSS and a sample HTML code card.Text / JSON · ConvertData Contract TesterCheck a batch of JSON records against the same rules. Download a report showing which records and fields need fixing.HTML / CSS · ConvertEmbeddable Code Card MakerMake a colorful code card for a web page. Download one HTML file with its styles included and no extra files to load.Code / Diff · ConvertFormatting Rule DemonstratorSee how code formatting rules change your code. Compare the original and formatted versions line by line.Text / JSON · ConvertInput Validation PlaygroundCheck sample emails, URLs, identifiers, dates, and numbers against visible validation rules.Text / JSON · ConvertJSON Difference ExplorerCompare two JSON files and find what changed. Open each difference to see added, removed and edited values.Text / JSON · ConvertJSON Schema ValidatorCheck JSON against a JSON Schema. Find missing fields, wrong value types and other errors with their exact locations.Code / JSON · ConvertLanguage Detection PreviewGuess the programming language of a code snippet. Compare the top two matches and check the highlighted result.JavaScript RegExp · ConvertRegex Capture Group ReferenceFind named and numbered capture groups in a regular expression. See where each group starts and how it is used.JavaScript RegExp · ConvertRegular Expression AST ExplorerSee how a JavaScript regular expression is built. Explore its parts in a tree and find syntax errors without running the pattern.SQL · ConvertSQL Style ComparisonCompare three ways to format the same SQL query. Try different spacing and keyword styles, then download each version.HTML / CSS · ConvertSyntax Theme ComparatorCompare three color themes for the same code. Preview how keywords, text and comments look before choosing a style.

Developer Tools: CSS & JavaScript

8 apps

CSS / JSON · ConvertCSS Declaration ExplorerSearch CSS property names and values, find important declarations, and export their locations for stylesheet cleanup.CSS / JSON · ConvertCSS Prefix PreviewAdd vendor prefixes for browsers you choose. See resolved browser versions and download the resulting CSS and source map.CSS / JSON · ConvertCSS Rule InventoryCount CSS rules, selectors, properties, and at-rules. See repeated values and download a complete stylesheet inventory.CSS / JSON · ConvertCSS Syntax ValidatorCheck CSS syntax, find errors by line and column, and explore a structured tree without applying the styles to your page.CSS / JSON · ConvertCSS Transformation PlaygroundFlatten nested CSS, add browser prefixes, and remove comments with a before-and-after view and downloadable CSS.JavaScript / source map · ConvertJavaScript MinifierMake JavaScript smaller with controls for compression, variable names, and comments. Download the code and an optional source map.CSS / JSON · ConvertLegacy CSS Compatibility DiffCompare CSS before and after browser-prefix changes. Inspect added and removed declarations for your chosen browser targets.JavaScript / source map · ConvertMinification Impact ViewerCompare original, minified, and formatted JavaScript. Measure UTF-8 and gzip sizes, then download code and source maps.

Developer Tools: Developer Utilities

9 apps

GTIN / SSCC · ConvertBarcode Check Digit CalculatorCalculate or verify the GS1 check digit for GTIN-8, UPC-A, EAN-13, GTIN-14, and SSCC-18 codes.CSV · ConvertBarcode CSV AuditorCheck a CSV column of product barcodes for invalid lengths, non-digit characters, and incorrect check digits.Unicode · ConvertDomain Character InspectorCheck the exact characters in a domain name. See Unicode codes and decoded Punycode to spot lookalike letters.Paths · ConvertGlob Pattern TesterTest a file glob against a list of paths. See which filenames match your pattern before using it in a script.Text · ConvertHTML Entity DecoderDecode named and numeric HTML entities into plain text without rendering the result as HTML.HTML · ConvertHTML Entity EncoderConvert text to HTML entities. Escape symbols such as < and & so they can appear as text in HTML code.Domain · ConvertIDN / Punycode ConverterConvert international domain names between Unicode and Punycode. Compare readable names with their xn-- form.SemVer · ConvertSemantic Version Range CheckerCheck which package versions fit an npm version range. Test rules such as ^1.2.3 against a list of versions.Unicode · ConvertUnicode Entity ExplorerInspect Unicode characters one by one. See each character's number, UTF-8 bytes and HTML entity code.

Developer Tools: Document & Data Services

2 apps

JSON / jq recipe · ConvertAPI Response ReshaperReshape a JSON API response with jq. Save the input, query and result together so you can repeat the same steps later.ZIP / CSV · ConvertArchive Text SearchSearch text inside a ZIP file. Choose a file pattern and search rule, then download matching lines with their filenames.

Developer Tools: IDs & Codes

3 apps

CSV / JSON / TXT · ConvertRandom Invite Code BatcherCreate unique offline invitation codes with a readable alphabet and optional event prefix, then download the full batch.CSV / JSON · ConvertRecord ID Migration MapperMap old record IDs to fresh UUID v4 or v7 values, review repeated IDs, and export a complete local lookup table.CSV / JSON / TXT · ConvertShort Identifier GeneratorGenerate random short IDs using your chosen alphabet, length and prefix, then export a batch as CSV, JSON or text.

Developer Tools: Queries & Dependencies

3 apps

JSON · ConvertDependency Order AnalyzerFind a workable order for tasks that depend on each other. Check for loops that make the task order impossible.JSON · Convertjq JSON QueryRun a jq filter against JSON and download the transformed result.Logs / CSV · ConvertLog Search WorkspaceSearch several log files with a regular expression and export matching lines with filenames and line numbers.

Productivity: Cars & Vehicles

8 apps

Vehicle records / CSV / Backup · ConvertCar Ownership Cost TrackerCombine logged fuel, servicing and other vehicle expenses. Compare categories and months, then export a dated ownership-cost report.Vehicle records / CSV / Backup · ConvertFuel Fill-Up DiaryLog fuel purchases and track fuel consumption across repeated fill-ups. Handle partial tanks, missed entries and metric or imperial units.Vehicle records / CSV / Backup · ConvertMileage-Based Service RemindersPlan vehicle maintenance using dates, odometer readings or both. Track due targets, completion history and recurring intervals.Vehicle records / CSV / Backup · ConvertRepair Quote Versus Actual TrackerTrack repair estimates alongside final invoices. Keep the original quote, record completed work and see cost differences.Vehicle records / CSV / Backup · ConvertUsed-Car Service History PackPrepare a selected vehicle maintenance history for sharing. Choose records, optional private fields and individual receipt attachments.Vehicle records / CSV / Backup · ConvertVehicle Document Expiry CalendarOrganize vehicle registration, inspection and insurance dates with attached documents. Review upcoming targets and export calendar entries.Vehicle records / CSV / Backup · ConvertVehicle Parts InventoryTrack spare parts and consumables for each vehicle. Record part numbers, suppliers, fractional quantities and usage history.Vehicle records / CSV / Backup · ConvertVehicle Service History OrganizerKeep vehicle repairs, servicing, receipts and odometer readings together. Search your history and save browser-local backups.

Productivity: Coffee & Brewing

2 apps

Saved brew recipes / Persistent timer · ConvertCoffee Brew Recipe TimerSave your coffee dose, grind setting, water and brew timing. Repeat a favourite recipe with a persistent pause-and-resume timer, bloom markers and first-drip notes.Bean records / Personal ratings / Comparison · ConvertCoffee Tasting JournalKeep coffee tasting notes, flavours and personal ratings alongside each brew recipe. Filter your journal and compare selected brews and beans side by side.

Productivity: Collections & Belongings

1 app

Item photos / Dated history / CSV · ConvertCollectibles Condition & Value DiaryKeep photos, condition records, acquisition costs and your own dated value estimates for a collection. Find items by collection or tag and export selected records.

Productivity: Cooking & Baking

2 apps

Saved recipes / Gram weights · ConvertBaker’s Percentage Recipe BuilderBuild and save bread formulas with flour at 100%. Add ingredient percentages, scale from flour weight or total portions and keep your recipe steps together.Timed checklist / CSV · ConvertBread Fermentation ScheduleTurn your bread recipe into a timed baking checklist. Choose a saved formula, set a start time and plan mixing, fermentation, proofing, baking and cooling.

Productivity: Family & Care

5 apps

Feeding log / Timers / Amounts · ConvertBaby Feeding DiaryRecord feeds with start and end times, feeding method, optional amounts and caregiver names. Keep an editable diary and daily totals in this browser.Sleep intervals / Daily totals · ConvertBaby Sleep LogLog sleep and naps with saved timers or manual start and end times. Review daily sleep totals, including sleep that crosses midnight.Saved timers / Observation diary · ConvertBaby Tummy-Time LogRecord tummy-time sessions with a timer or manual times. Keep observations, caregiver labels and daily recorded durations together.Selected care summary / Print · ConvertCaregiver Handover SummaryPrepare a printable handover from recorded feeds, sleep, nappy changes and tummy time. Choose a child, date range and private fields to include.Change diary / Daily counts · ConvertNappy Change TrackerKeep a dated nappy-change diary with wet and solid labels, optional colour and notes. See the latest recorded change and daily counts.

Productivity: Food & Friends

1 app

Item assignments / Tax & tip / Bill report · ConvertRestaurant Bill by ItemSplit a restaurant bill by the items each person ordered. Share dishes with custom portions, add receipt tax and tip, and save an exact breakdown for every diner.

Productivity: Gardening & Plants

5 apps

Care journal / CSV · ConvertPlant Care HistoryKeep watering, fertilising, repotting, treatments and observations in one dated plant journal. Correct older entries and export the history you need.QR labels / Saved care record · ConvertPlant Collection QR LabelsCreate printable plant labels that open saved care instructions when scanned. Choose the label text and optional location, then download a QR image or print sheet.Photo journal / Date comparison · ConvertPlant Growth Photo DiaryCompare dated photos of a plant as it grows. Keep captions, notes and optional height measurements alongside a browser-local image gallery.Watering checks / Care records · ConvertPlant Watering QueueKeep plant watering checks organized by date and location. Record watering, pause schedules and see the next check update from your care history.Selected care sheet / Print · ConvertPlant-Sitter Care SheetPrepare a clear handover for someone looking after your plants. Select plants, care instructions and optional details, then download a printable sheet.

Productivity: Home & Household

4 apps

Lending records / Calendar / CSV · ConvertBorrowed Belongings TrackerRemember who borrowed your belongings and when they should return. Keep active loans, record returns and download expected return dates.Possession plans / CSV · ConvertDonation and Decluttering TrackerGive possessions a next step: keep, donate, sell or lend. Organize items by location and record when donations or sales leave your household.Device history / Calendar / CSV · ConvertHousehold Battery Replacement LogRecord battery replacements and recharges for household devices. Keep battery types, change history and optional planned intervals in one place.Comparison table / CSV · ConvertPersonal Product ShortlistCompare purchase candidates using your own criteria, prices, product links and notes. Group similar options and mark your chosen products.

Productivity: Kitchen & Groceries

8 apps

Recipe matches / CSV · ConvertCook With What I HaveFind which of your saved recipes you can cook with the ingredients in your pantry. Scale servings, check missing amounts and record meals as cooked.Waste log / CSV · ConvertFood Waste DiaryLog discarded food, quantities and reasons while updating pantry stock. Review waste over a date range and estimate its recorded purchase cost.Freezer inventory / Calendar / CSV · ConvertFreezer Stock PlannerOrganize frozen food by drawer or shelf, track portions and reserve batches for upcoming meals. Keep an editable freezer inventory in your browser.Purchase history / CSV · ConvertGrocery Price HistoryCompare prices you have paid for the same grocery product over time. Normalize package sizes and download your purchase history.Replenishment list / CSV · ConvertLow-Stock Grocery RemindersTurn minimum pantry stock levels into a grocery list. See what to buy as you record purchases, cooking and food waste.Opened batches / Calendar · ConvertOpened-Food ReminderRecord when food packages were opened and track your chosen after-opening intervals. Keep partial packages separate and download date reminders.Stock list / Calendar / CSV · ConvertPantry Expiry TrackerKeep pantry, fridge and freezer food dates in one place. See batches due soon, filter your stock and download calendar reminders.Recipe estimate / CSV · ConvertRecipe Cost Per ServingCalculate the ingredient cost of homemade meals from your purchase records. Scale recipes, compare cost per serving and see which prices are missing.

Productivity: Knitting & Crafts

4 apps

Stitch plan / TXT · ConvertKnitting Increase and Decrease PlannerSpread increases or decreases across one knitting row. See exact stitch groups and save the plan with your project.Projects / Pattern files / CSV · ConvertKnitting Project Progress OrganizerKeep planned, active and finished knitting projects connected to patterns, notes, counters and allocated yarn. Save a local project archive.Project counters / Checkpoints · ConvertKnitting Row CounterKeep row counts, named counters, notes and checkpoints with each knitting project. Pick up where you left off in this browser.Yarn inventory / Length matching · ConvertYarn Stash MatcherCompare your project’s yarn requirements with recorded stock, colours and dye lots. See available length and shortages by batch.

Productivity: Personal Productivity

6 apps

Activity grid / CSV / Backup · ConvertDaily Habit GridTrack daily habits with a twelve-week activity grid. Record counts, correct past days and see active-day streaks without losing your history.Reading display / Text / Backup · ConvertFocused Text ReaderRead a passage one word at a time with an anchored focus letter. Adjust the pace, move between sentences and resume from your saved position.Bookmarks / HTML / Backup · ConvertPrivate Bookmark LibraryKeep useful links in a searchable library. Add tags and notes, import browser bookmarks and export a portable copy, all on your device.Notes / Markdown / Backup · ConvertPrivate Notes & TasksCapture ideas, pin important notes and check off small tasks. Organize by label, search your notebook and export your writing as Markdown.Timer / Timesheet CSV / Backup · ConvertProject Timer & TimesheetTrack time by project, pause for breaks and save a timesheet. Add past sessions, filter by date or project and download your recorded hours.Meeting log / Markdown / Backup · ConvertTimestamped Meeting NotesKeep named meeting sessions with timestamped notes, speakers and decisions. Search a meeting and export its discussion as a Markdown timeline.

Productivity: Studying & Learning

2 apps

Daily plan / CSV · ConvertExam Flashcard Workload PlannerEstimate flashcard reviews before an exam. Choose study days, a daily new-card limit and a time budget, then download the daily workload plan.Interactive cards / Backup · ConvertSpaced Repetition Flashcard TrainerStudy your own flashcards with review times that adapt to your answers. Reveal each answer, rate your recall and return when cards are due.

Productivity: Work & Job Hunting

3 apps

Applications / Timeline / CSV · ConvertJob Application TrackerTrack applications, interviews and outcomes in a clear local workspace. Keep posting details, submission dates, skill tags and next actions together.Offer comparison / CSV · ConvertJob Offer Comparison WorksheetCompare saved offers across annual cash pay, benefits, commute, flexibility and your own weighted priorities. Keep unknown amounts visible.Contacts / Tasks / Calendar · ConvertRecruiter Follow-Up OrganizerKeep recruiter contacts, conversation notes and follow-up tasks beside your applications. Track due dates and download a calendar.

Learning & Reference: Astronomy & Satellites

4 apps

Interactive chart / CSV / Calendar · ConvertEclipse & Conjunction CalendarMake an astronomy calendar of eclipses, Moon phases and planetary alignments. Search events and check their dates.Interactive chart / CSV / Calendar · ConvertPlanet Visibility ExplorerFind when planets are above your horizon. Compare rise and set times, sky positions and dark hours for your location.Interactive chart / CSV / Calendar · ConvertSatellite Orbit ViewerPlot satellite orbits from your own TLE data. Follow ground tracks and compare height, speed and viewing angles over time.Interactive chart / CSV / Calendar · ConvertSatellite Pass PlannerFind satellite passes above your location using TLE data. See sky paths and estimated light conditions at each peak.

Learning & Reference: Astronomy Services

2 apps

ZIP / CSV / JSON / PNG · ConvertEphemeris Comparison DeskCompare Sun, Moon and planet positions from two JPL models. Chart their differences and download the positions for your chosen time.ZIP / CSV / JSON / PNG / ICS · ConvertObserving Night PlannerPlan a night of stargazing. Compare target heights, dark hours and distance from the Moon, then export your observing windows.

Learning & Reference: Biological Sequences

2 apps

FASTA / Alignment · ConvertSequence Alignment ViewerCompare two short DNA sequences. Line up their bases and inspect matches, differences and gaps.FASTA / FASTQ / GenBank · ConvertSequence Format ConverterConvert biological sequence files between supported formats. Choose input and output formats and download the new file.

Learning & Reference: Language & Calendars

7 apps

Text · ConvertBraille Byte DecoderDecode text from eight-dot braille byte patterns. Restore text made with a matching byte encoder; this is not a braille translator.Unicode braille · ConvertBraille Byte EncoderEncode text bytes as eight-dot Unicode braille patterns. This reversible code is not a translation into readable braille.Unicode · ConvertBraille Dot Cell ExplorerExplore the eight dots of a Unicode braille cell. Choose raised dots and see the matching character and byte value.BS / CSV · ConvertNepali Calendar MakerMake a month of Nepali BS dates with corresponding Gregorian dates and weekdays.AD / BS · ConvertNepali Date ConverterConvert a calendar date between Gregorian AD and Nepali Bikram Sambat BS, with English and Nepali output.Text · ConvertPhonetic Spelling HelperSpell names, reference numbers, and short messages with the NATO phonetic alphabet.Text · ConvertRadio Spelling PracticePractise NATO phonetic code words with a scored quiz, immediate feedback, and downloadable results.

Learning & Reference: Math & Science

18 apps

Report / CSV · ConvertAC Impedance Teaching LabExplore how resistors, coils and capacitors affect an AC circuit. Compare series and parallel circuits at a chosen frequency.Worksheet JSON · ConvertCalculus Expression HelperFind a derivative or integral of a supported expression. Compare the formulas and check the result at a chosen value.JSON / SVG · ConvertComplex Number WorkbenchCalculate with complex numbers such as 3 + 4i. See the answer on a graph and compare its distance and angle.CSV / SVG · ConvertDescriptive Statistics DeskSummarize number columns in a CSV file. See averages, ranges, missing values and a chart of how the values are spread.Report / CSV · ConvertFraction Worksheet CheckerCheck fraction sums and answers. See common-denominator steps and simplified fractions for each line of your worksheet.JSON · ConvertLinear Systems WorkbenchSolve a system of linear equations in the form Ax = b. See the solution and how closely it fits each equation.JSON · ConvertMatrix LaboratoryMultiply, transpose or invert matrices. Check their size and see warnings when a calculation may be unstable.Worksheet JSON · ConvertPolynomial Exploration DeskExpand and factor polynomials. Find a derivative and calculate the value of an expression at a point you choose.JSON · ConvertPrecision Decimal CalculatorCalculate with long decimal numbers. Choose the precision and compare the answer with a standard computer calculation.JSON / SVG · ConvertProbability Distribution ExplorerExplore probability distributions with charts. Change the settings and see how the curve and chances change.Report / CSV · ConvertRecipe Fraction ScalerScale a recipe up or down with exact fractions. Keep each ingredient and unit beside its new amount.Report / CSV · ConvertRounding Method DemonstratorCompare nine ways to round numbers. See what happens with negative numbers and values exactly halfway between two choices.Notebook JSON · ConvertScientific Calculator NotebookSolve calculations in a reusable notebook. Name values, use units and matrices, and use earlier answers in later lines.Report / CSV · ConvertStatistical Test WorkbenchRun a t-test to compare averages. Choose one sample, paired measurements or two groups, then review the results and assumptions.Worksheet JSON · ConvertSymbolic Algebra WorkbenchSimplify, expand or factor an algebra expression. Compare the new form with the original and check a sample value.Worksheet JSON · ConvertSymbolic Computation WorksheetWork through several algebra or calculus steps in order. Review each result and download the full worksheet.JSON / SVG · ConvertTangent-line VisualizerDraw a function and its tangent line. Move a point along the curve to see how the slope and line equation change.Formula JSON · ConvertUnit-aware Formula CalculatorMake a formula with named inputs and units. Change the measurements, calculate again and save the formula for later.

Learning & Reference: Routes & Geography

3 apps

GPX · ConvertGPX Metadata InspectorInspect tracks, points and times in a GPX file. Check recorded heights and approximate distance without uploading your route.GPX · ConvertGPX Segment ExporterExtract one recorded track segment from a GPX file and save it as a new GPX document.GPX / CSV · ConvertGPX Waypoint ExporterExtract GPX waypoints into a CSV with names, coordinates, elevations, and timestamps.

Learning & Reference: Scientific File Services

2 apps

CSV · ConvertAstronomical Coordinate ConverterConvert sky coordinates between equatorial, Galactic and ecliptic systems. Choose the reference settings and download the new coordinates.FITS / ZIP / CSV / PNG · ConvertFITS File ExplorerOpen a FITS astronomy file. Read its headers, preview image data and download selected table rows with a report.

Games & Play: Chess

2 apps

FEN · ConvertChess Position InspectorExplore a chess position on an interactive board, play legal moves, browse the game, and export FEN or PGN.PGN · ConvertPGN Game InspectorBrowse a chess game on a board, add notes to individual positions, and export an annotated PGN.

Games & Play: Game Nights

4 apps

Interactive scores / CSV / Backup · ConvertBoard-Game Group Performance ReportCompare saved board-game results by game and scoring system. See games played, solo and tied wins, win rates and average scores for your group.Interactive scores / CSV / Backup · ConvertBoard-Game Night HistoryKeep completed game nights with players, round scores and winners. Filter your history, inspect past sessions and download records.Interactive scores / CSV / Backup · ConvertBoard-Game ScorekeeperTrack board-game players, round scores and running totals. Choose high-score or low-score rules, correct earlier rounds and save the finished game.Interactive scores / CSV / Backup · ConvertDarts ScorekeeperKeep darts scores for 301, 501, 701 or 1001. Record individual throws, track remaining points, handle busts and undo mistakes.

Games & Play: Games & Puzzles

32 apps

Game · Play2048Slide, combine, and make room. Bring matching tiles together to reach 2048.Game · PlayBinary GridFill each row and column with equal numbers of both colours. Never place three identical colours consecutively, and keep every completed row and column unique.Game · PlayBox PusherA small room. A few boxes. Push each one onto a target without getting stuck.Game · PlayBridgesJoin islands with horizontal or vertical bridges. Each island needs the number of bridges written on it, and every island must belong to one connected network.Game · PlayCheckersMove diagonally across the dark squares. Capture by jumping over an opposing piece. Captures are compulsory; reaching the far row crowns a king.Game · PlayCodebreakerGuess the four-colour code. A solid feedback dot means the right colour in the right place; a ring means the right colour in another place.Game · PlayDots and BoxesTake turns drawing lines between dots. Completing a box claims it and gives you another move. The player with the most boxes wins.Game · PlayFillominoFill the grid so each connected group of equal numbers contains exactly that many cells. Clues stay fixed; equal-number regions must stay separate.Game · PlayFive or MoreMove a ball through empty squares to form a line of five or more matching colours. Moves that clear nothing add three balls from the preview.Game · PlayFour in a RowPick a column. Plan your next move. Connect four discs before your opponent does.Game · PlayHitoriShade squares so no unshaded number repeats in any row or column. Shaded squares cannot share an edge, and all unshaded squares must stay connected.Game · PlayInertiaCollect all the gems by sliding the ball. Walls, edges and stop circles halt a slide; touching a mine is fatal, but you can undo it.Game · PlayKeenPlace 1 to N exactly once in every row and column. Each outlined cage must produce its target using the shown arithmetic operation.Game · PlayLight UpA lamp lights its row and column until a black square blocks it. Light all white squares without any lamp shining on another. Numbers count lamps immediately beside a black square.Game · PlayLights OutOne tap changes five lights. Find the pattern that switches the whole board off.Game · PlayMahjong SolitaireRemove matching pairs of free tiles. A tile is free when nothing covers it and either its left or right side is open. Any flower matches a flower, and any season matches a season.Game · PlayMancalaChoose a pit on your bottom row and distribute its seeds around the board. Ending in your right-hand store gives another turn. Ending in an empty pit on your side captures the seeds opposite.Game · PlayMinesweeperA little logic, one square at a time. Clear the board without touching a mine.Game · PlayNetRotate every tile until all pipes connect to the square source with no loose ends. Lit pipes are connected to the source.Game · PlayNonogramFollow the numbers to uncover a hidden picture, one filled square at a time.Game · PlayNumberlinkJoin each pair of matching dots with a continuous path. Paths cannot cross and must cover the entire grid together.Game · PlayReversiTurn the board in your favour. Capture your opponent’s discs and claim the corners.Game · PlayRobotsRobots move toward you after each turn. Lure them into one another or into junk piles without getting caught.Game · PlaySame GameRemove connected groups of two or more matching tiles. Tiles fall down and empty columns close up. Larger groups score more, and clearing the board earns a bonus.Game · PlayShisen-ShoRemove matching tiles that can be connected through empty space using no more than two turns. Paths may travel around the outside of the board.Game · PlaySightlinesNumbers count the dots visible in the four straight directions, excluding their own square. Walls block the view, and every dot must see at least one other dot.Game · PlaySnakeTake a quick break. Gather the dots, grow your snake, and keep clear of your tail.Game · PlayTentsPlace one tent beside each tree horizontally or vertically. Tents cannot touch, even diagonally. The outside numbers give tent counts for each row and column.Game · PlayTetravexMove all tiles from the right tray to the left board. Numbers on every touching pair of edges must match.Game · PlayTowersFill each row and column with heights 1 to N exactly once. An outside clue tells you how many towers are visible from that direction; taller towers hide shorter ones behind them.Game · PlayTriplesEach move slides the tiles one step. A 1 and a 2 make 3; equal tiles of 3 or more combine with each other. The preview shows the next tile.Game · PlayYachtRoll up to three times per turn, holding any dice you want to keep. Choose an unused scorecard category to finish the turn. Each category can be used once.

Games & Play: Puzzles & Games

1 app

Printable puzzle / HTML · ConvertCustom Crossword MakerMake a crossword from your own words and clues. Preview the numbered grid, check which words fit, and download a printable puzzle with an answer key.

Games & Play: Tournaments & Fixtures

4 apps

Bracket / CSV · ConvertDouble-Elimination Tournament PlannerRun a tournament with winners’ and losers’ brackets. Enter scores, follow each entrant’s progress and handle a possible grand-final reset.Bracket / CSV · ConvertKnockout Tournament Bracket MakerCreate a single-elimination bracket for a friendly competition. Seed entrants, handle byes, enter scores and follow winners through to the final.Bracket / CSV · ConvertMulti-Stage Tournament OrganizerRun two round-robin groups followed by a knockout finish. Track group scores, choose qualifiers and create crossed semifinals with a final.Bracket / CSV · ConvertRound-Robin Fixture PlannerPlan a friendly league where every entrant plays the others. Record scores, allow draws and keep an updated table alongside the fixture rounds.