GitHub-style activity heatmap from timestamps. 100% client-side.
Calendar Heat Map Generator: GitHub-style activity heatmap from timestamps. Useful for creating test fixtures, seed data, mock API responses, or documentation examples with correct formatting. Runs entirely in your browser — nothing is uploaded or stored. Free Timestamp tool at HttpStatus.com — no account required.
Yes — each generation produces fresh values. Where applicable, cryptographic randomness ensures uniqueness.
Yes. Options typically include count, format variant, and type-specific parameters.
No — client-side tools don't transmit your input. Standard page-view analytics may run, but your data is never included.