Free online tool

Lightweight Project Planner

Turn tasks, dates and dependencies into an editable project timeline, with milestones, progress and portable backups.

Works on your deviceNo account neededProject / CSVOpen workspace ↓

How can I plan a project with tasks and dependencies?

Add tasks with inclusive start and end dates, progress, owners and dependency links. Move or resize bars on the Gantt chart, or edit dates using the form. Circular links are rejected; early starts are flagged. Align dependency dates explicitly to move tasks after their predecessors. Save a project backup or export CSV, SVG and a printable schedule.

From first step to finished.

Dates, dependencies and a clear place to begin.

On your device

Opening local project…

Drag a bar or its edge. Focus a bar and use ← / → to move one day; Shift moves seven. Enter opens its editor.

Task02 Nov04 Nov07 Nov09 Nov12 Nov14 Nov17 NovDefine the briefDefine the brief: 2026-11-02 to 2026-11-05; 100% completeBuild the first versionBuild the first version: 2026-11-06 to 2026-11-13; 35% completeReview and refineReview and refine: 2026-11-16 to 2026-11-18; 0% completeReady to launchReady to launch: 2026-11-19 to 2026-11-19; 0% complete

4 tasks · 1 complete · 1 milestones. End dates include that day. Filters affect the view; exports include the complete project.

Add a task

Depends on

Task list

4 matching tasks · page 1 of 1

Define the brief

2026-11-02 → 2026-11-05 · 100% complete · Planning

Build the first version

2026-11-06 → 2026-11-13 · 35% complete · Making

Review and refine

2026-11-16 → 2026-11-18 · 0% complete · Finishing

◆ Ready to launch

2026-11-19 → 2026-11-19 · 0% complete · Milestone

Three simple steps

How to use Lightweight Project Planner

  1. Start with the example or reopen a project backup.

  2. Edit the tasks, dates or cards. Drag to rearrange, or use the labelled controls.

  3. Download a project backup and export a portable schedule or board.

Common questions

Good to know

Understand the result.
Keep the original.

Is this tool free, and are my files uploaded?

This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.

What are the limits and details?

Dates from 1970 through 2100; up to 250 tasks across five years, with each task lasting at most 731 days. Dependencies are finish-to-start links using calendar days. Alignment moves successors later without shortening tasks. Resource leveling, critical-path analysis, working-day calendars and team synchronization are not included. Local saving is supplemented by portable backups.