Design a GitHub-style contribution chart exactly how you want it. Paint the green squares, set the count and year, and export a clean PNG for slides, READMEs, and social posts — free, no sign-up.
How to make a GitHub chart
- 1
Open the tool
Open the generator — a full year of squares loads instantly.
- 2
Paint your activity
Click squares to darken them, or click and drag to paint a whole stretch.
- 3
Set the details
Edit the contribution count and year, and pick light or dark.
- 4
Export the PNG
Export a crisp PNG — no account, no watermark.
What you can customize
Paintable squares
Click any square to cycle through GitHub's five green levels, from empty to densest.
Drag to paint
Click and drag across the grid to fill whole streaks of activity at once.
Editable title
Set the contribution count and the year shown in the title from a quick editor.
Light, dark, and export
Light and dark themes that match GitHub's real palettes, plus PNG export.
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