Create zero-dependency circular SVG donut chart graphics using stroke-dasharray geometry.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Set the numerical values and color fills for each chart slice.
Inspect the rendered vector graphic on the live preview canvas.
Copy the standalone SVG code directly into your UI components or image assets.
They use concentric SVG <circle> elements with stroke-dasharray equal to the slice arc length and stroke-dashoffset to rotate each subsequent segment.
Yes, standalone SVG graphics render cleanly in supported email clients without requiring external scripts.
Zero-egress companion tools in the Developer Tools suite
Format, validate, repair, and minify JSON data instantly.
Decode, verify claims, inspect headers, and check token expiry.
Test regex patterns with flags, group captures, and live matches.
Compare text or source code side-by-side with visual diffs.