Developer Tools

JSON, regex, JWT, and coding utilities — 8 tools available

Format, validate, tree-view, schema-gen, type-gen, diff. 100% browser-side.

3 variants side by side, image preview, hex dump fallback.

Live regex tester with multi-flavor compare and click-to-insert cheatsheet.

Create beautiful CSS gradients with a visual editor.

Decode + sign + verify HS256/384/512 in browser.

5 dialects, auto-detect, 3 keyword-case modes, browser-only.

20+ QR types with styling, logo, scanner, batch CSV, and scannability score.

7 harmonies, WCAG audit, image extract, 6 export formats.