A fast, offline-friendly console of developer utilities. Pick a tool below or press ⌘K to jump anywhere.
Format, minify and validate JSON.
Format source code with Prettier.
Encode and decode Base64 text.
Encode, decode, inspect and verify JWTs.
Generate and verify HMAC signatures.
Generate UUID v7 and inspect embedded timestamps.
Edit Markdown with live preview.
Convert between HEX, RGB, HSL, HSV, CMYK, HWB, OKLCH and LAB.
Build a color shade scale from any color.