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Developer Tools
273 appsDeveloper Tools: Inspect & Validate
Developer Tools: JSON Web Keys
JWT · GenerateJWK Key Pair GeneratorGenerate an RS256 or ES256 JWK pair and a stable key ID in your browser.JWT · CheckJWK Thumbprint CalculatorCalculate the RFC 7638 SHA-256 thumbprint and thumbprint URI for a JWK.JWT · ConvertJWK to PEM ConverterConvert an RSA or EC JWK into a public SPKI or private PKCS8 PEM key.JWT · CheckJWKS InspectorList key IDs, algorithms, uses, public fields, and thumbprints in a JWKS file.JWT · ExtractJWKS Key FinderSearch a pasted JWKS for a matching kid and copy the exact public key.JWT · ConvertPEM to JWK ConverterConvert a public SPKI or private PKCS8 RSA or EC key into JWK format.JWT · GenerateSymmetric JWK GeneratorGenerate a 256-bit secret JWK for HS256 signing or A256GCM encryption.
Developer Tools: JWS & JWE
JWT · CheckJWE Text DecryptorDecrypt a direct A256GCM compact JWE with the passphrase used to make it.JWT · GenerateJWE Text EncryptorProtect text with direct A256GCM encryption and a passphrase-derived local key.JWT · GenerateJWS Message SignerCreate a compact JWS for a text message with a shared secret kept in this tab.JWT · CheckJWS Signature VerifierCheck an HS256 compact JWS and reveal its text only after the signature matches.
Developer Tools: JWT Signing & Checks
JWT · CheckJWT Claims ValidatorVerify an HS256 token and require the issuer and audience your app expects.JWT · GenerateJWT HS256 SignerTurn JSON claims into a signed HS256 token with a secret that stays in this tab.JWT · GenerateJWT Private Key SignerCreate an RS256 or ES256 token from claims and a local JWK or PKCS8 private key.JWT · CheckJWT Public Key VerifierVerify an RS256 or ES256 token with a local public JWK or SPKI key.JWT · CheckJWT Signature VerifierCheck whether a JWT matches a shared secret, then read the verified claims.
Developer Tools: Numbers & Reports
JSON · CalculateJSON Average CalculatorCalculate the simple average of numbers collected from JSON records.JSON · AnalyzeJSON Boolean Rule CheckerEvaluate a JSONata condition and return one clear true or false result.JSON · AnalyzeJSON Data Summary MakerCombine counts, totals, averages, and distinct values into one result object.JSON · AnalyzeJSON Key InventoryUse $keys to list top-level keys and the shared keys found in array records.JSON · CalculateJSON Min and Max FinderReturn the minimum and maximum values from one numeric JSON field.JSON · CalculateJSON Total CalculatorSum numbers from a JSON array without moving the data into a spreadsheet.JSON · AnalyzeJSON Value Type InspectorUse $type to report the JSON type at several useful paths.
Developer Tools: Parse & Understand
JavaScript · AnalyzeJavaScript AST ExplorerParse JavaScript into a clear table of syntax nodes and a downloadable AST.JavaScript · AnalyzeJavaScript AST JSON ExporterParse JavaScript with locations and export its capped Acorn AST as JSON.JavaScript · AnalyzeJavaScript Syntax CheckerFind the first JavaScript syntax error with its line, column, and nearby code.JavaScript · AnalyzeJavaScript Syntax Error ExplainerShow the broken line, exact caret, parser message, and a short fix hint.JavaScript · AnalyzeJavaScript Top-Level Statement OutlineList top-level imports, exports, declarations, classes, and other statements in order.
Developer Tools: Password Planning
Password-free JSON · CheckMaster Password Strength CheckerCheck a password-manager master password with a high score and long-length target.Password-free JSON · ComparePassword Comparison ToolSee which of two password ideas has the higher score and guess estimate.Password-free JSON · CheckPassword Feedback ExplainerGet short, simple feedback about what weakens a password and what to change.Password-free JSON · ComparePassword Improvement LabAdd a private change and see whether it truly raises the guess score.Password-free JSON · CheckPassword Safety Report MakerCreate a shareable score, pattern, and advice report with no password text inside it.Password-free JSON · CheckWi-Fi Password Strength CheckerReview a Wi-Fi password with a strong length target and offline attack estimate.Password-free JSON · CheckWork Password Policy CheckerTest length, character rules, and zxcvbn strength in one clear work-policy report.
Developer Tools: Pattern Checks
Password-free JSON · CheckDate Pattern Password CheckerSpot date patterns and recent years that can make a password easier to guess.Password-free JSON · CheckDictionary Password CheckerFind dictionary words, common names, and familiar passwords inside one choice.Password-free JSON · CheckKeyboard Pattern Password CheckerDetect common keyboard walks that look complex but are quick to guess.Password-free JSON · CheckPassword Pattern FinderSpot dictionary words, repeats, dates, sequences, and keyboard paths in a password.Password-free JSON · CheckPersonal Info Password Risk CheckerAdd names or words an attacker may know and see whether they weaken the password.Password-free JSON · CheckPIN Strength CheckerCheck a 4 to 12 digit PIN for repeats, sequences, dates, and guess difficulty.Password-free JSON · CheckRepeated Password Pattern CheckerShow repeats that make a password easier to predict, such as aaa or wordword.
Developer Tools: Preview & Convert
Developer Tools: Quality Checks
Developer Tools: Queries & Dependencies
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.
Developer Tools: Query & Find
JSON · AnalyzeJSON Duplicate Value FinderFind repeated field values in a JSON array and list each duplicate one time.JSON · AnalyzeJSON Path Value FinderUse JSONata path steps to collect nested values without writing a loop.JSON · AnalyzeJSON Record LookupLook up matching records in a JSON array with one simple equality test.JSON · AnalyzeJSON Text Search FilterSearch a text field without case sensitivity and return each matching object.JSON · AnalyzeJSON Unique Value FinderCollect a field from many records and remove repeated values with JSONata.JSON · AnalyzeJSONata Query PlaygroundRun a safe, capped JSONata expression against JSON and inspect the structured result.
Developer Tools: Review Code
JavaScript · AnalyzeJavaScript Complexity SnapshotShow functions, branches, loops, catches, logical choices, and deepest syntax nesting.JavaScript · AnalyzeJavaScript Conditional InventoryFind if, switch, conditional, and logical expressions with source lines.JavaScript · AnalyzeJavaScript Console Call FinderList console method calls and their source lines before code is shipped.JavaScript · AnalyzeJavaScript Identifier FrequencyCount identifier names and show their frequency, first line, and example role.JavaScript · AnalyzeJavaScript Loop InventoryFind for, for-of, for-in, while, and do-while loops with lines and nesting.
Developer Tools: Strength & Time
Password-free JSON · CheckBatch Password Strength CheckerCheck a small list of test passwords and export scores without exporting the passwords.Password-free JSON · CheckPassphrase Strength CheckerMeasure a passphrase by its words, guess score, and estimated attack time.Password-free JSON · CheckPassword Crack Time EstimatorCompare online and offline crack-time estimates without sending the password away.Password-free JSON · CheckPassword Guess Count EstimatorEstimate the number of guesses and log-scale difficulty for one password.Password-free JSON · CheckPassword Length Strength CheckerCompare password length with its real pattern-based score and safe length bands.Password-free JSON · CheckPassword Strength CheckerGet an honest 0 to 4 score, safe advice, and a local crack-time estimate.
Developer Tools: Test Liquid Features
Liquid · TestLiquid Array Filter TesterTest common Liquid array filters against tags or other JSON lists.Liquid · TestLiquid Assign and Capture TesterTest assign math and capture blocks before placing them in a larger template.Liquid · TestLiquid Case Statement TesterTest case, when, and else branches against a JSON status or label.Liquid · TestLiquid Conditional TesterChange JSON values and see which Liquid conditional branch renders.Liquid · TestLiquid Cycle Tag TesterPreview repeating labels or row styles made with Liquid's cycle tag.Liquid · TestLiquid Date Format TesterTest Liquid's date filter with a fixed sample time and clear format codes.Liquid · TestLiquid Default Value TesterTest the default filter with present, blank, and missing JSON fields.Liquid · TestLiquid Filter Chain TesterTest the order and result of a Liquid filter chain on real sample data.Liquid · TestLiquid For Loop TesterTest for-loop indexes, first and last flags, limits, and array values.Liquid · TestLiquid Money Format TesterTest division, rounding, and currency text for price values stored as cents.Liquid · TestLiquid String Filter TesterTest capitalization, trimming, replacement, truncation, and other string filters.Liquid · TestLiquid Unless Tag TesterTest Liquid's unless tag with stock, status, or customer data.Liquid · TestLiquid URL Handle Template TesterTest lowercase, replacement, and cleanup filters for a basic URL handle.Liquid · TestLiquid Whitespace Control TesterCompare normal Liquid delimiters with dash-trimmed tags and output marks.