GitHub Readme Contribution Merger

Combine multiple GitHub contribution graphs into one embeddable SVG heatmap for your README profile.

Usernames
Mode
Background

How to use

Sum
Adds contribution counts from all users into one heatmap with a single color scale.
Overlay
Shows each user as a separate color layer so you can see individual contributions side by side.

Enter 2+ GitHub usernames, pick a color, then copy the generated URL or embed snippet into your README.

Generated URL
Markdown
HTML