A browser-based Gantt chart maker for planning a project from start to finish. Add tasks with start and end dates, drag the bars to reschedule, link dependencies between them, and let the tool reveal the critical path that decides your deadline. It is built for anyone who needs a quick, private timeline — freelancers scoping client work, students mapping a dissertation, founders sequencing a launch, or a team lead sanity-checking a sprint plan — without signing up for heavyweight project-management software.
How it works
Every task is a bar on a day-by-day timeline. The horizontal axis runs from the earliest start date to the latest end date across all your tasks, with light gridlines marking the start of each week. You set a task’s dates either by typing them in the editor or by dragging the bar to move it and dragging its right edge to make it longer or shorter. A progress slider fills the bar so you can track how far along each piece of work is.
Dependencies are the heart of a real schedule. When you mark Task B as depending on Task A, an arrow is drawn from A’s end to B’s start. Pressing Auto-schedule runs a topological pass over the dependency graph and pushes each task so it begins the day after its latest predecessor finishes, preserving each task’s duration. Cycles and missing links are handled gracefully rather than crashing.
The tool then computes the critical path — the longest dependency chain by total duration — and outlines those tasks in red. This is the sequence with zero slack: shortening any of these tasks shortens the project, and delaying any of them delays delivery. Everything is calculated locally and saved to your browser automatically, so your plan survives a page refresh.
Example
Suppose you are planning a five-task website relaunch. Discovery runs four days; wireframes depend on discovery; both visual design and the front-end build depend on wireframes; and QA & launch depends on both design and build finishing. Marking those dependencies and pressing Auto-schedule lines the bars up correctly, and the critical path lights up as Discovery → Wireframes → Front-end build → QA, telling you the build, not the design, is what gates your launch date.
| Task | Duration | Depends on | On critical path |
|---|---|---|---|
| Discovery & research | 5 days | — | Yes |
| Wireframes | 5 days | Discovery | Yes |
| Visual design | 7 days | Wireframes | No |
| Front-end build | 11 days | Wireframes | Yes |
| QA & launch | 5 days | Design, Build | Yes |
When the plan looks right, hit Export PNG for a shareable image, or Export CSV/JSON for your records. No numbers ever leave your browser.