Gantt chart generator
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Gantt chart
Plot project tasks over time to show durations, overlaps, and sequences. Create a private, publication-ready gantt chart directly in your browser without transmitting sensitive rows off-device. Data is processed locally on your hardware with zero server uploads, enabling instant export to SVG, PNG, and Excel data.
Edit the data, then export.
Everything runs in your browser. Your data is not uploaded.
Data
Paste tab-separated data from Excel or edit the cells directly.
Paste or import table data
Paste a header row, or choose a local CSV/TSV file. Files are read in this browser and capped at 500 rows.
Appearance
Preview
Sample preview of the example data. The live chart takes over as soon as you start working.
SVG, PNG, and Excel exports are generated locally in this browser. PowerPoint export is temporarily unavailable while its dependency path is reviewed for a high-severity image parser advisory.
Temporal Dynamics & Trend Analysis
A Gantt chart is a project management visualization that plots discrete tasks as horizontal bars along a timeline. The length of each bar represents the task’s duration, while its position on the x-axis denotes its start and end dates. This layout makes it easy to track project phases, identify overlapping work, and monitor overall progress. All scheduling data processes locally on your machine—no project details are ever uploaded to a server.
Time-Series Layout & Column Schema
Format input columns for gantt chart with explicit headers and numerical measurements. Verify that rows represent discrete categories or observations without unformatted symbol artifacts.
Sample Time Series Matrix
| Task name | Start date | End date | Owner |
Design Rules for Longitudinal Data
- Ensure sufficient visual distinction for gantt chart marks across standard and high-contrast viewports.
- Align text labels horizontally whenever possible to improve cognitive readability for gantt chart elements.
- Double-check scale boundaries and zero-anchors before exporting gantt chart presentation artwork.
- Data shape
- Task, start date, and end date columns
- Exports
- SVG, PNG, and Excel data; PowerPoint export is temporarily unavailable pending dependency review.
How it works
You edit a table in this page. The renderer draws an SVG from those rows in your browser, then you can download SVG, PNG, or Excel data. The table is not uploaded to any external processing server.
Frequently asked questions
What is the critical path in a Gantt chart?
The critical path is the longest sequence of dependent tasks that determines the minimum possible project completion time.
Reviewed 16 August 2026.