Developer Tools
7 tools · 100% client-side · free, no signup
JSON Formatter
Beautify, minify, validate JSON with clear error messages.
Markdown Previewer
Write Markdown with a live, sanitized HTML preview.
HTML Entity Encoder
Encode/decode HTML entities and escape special characters.
UUID Generator
Generate RFC 4122 v4 UUIDs in bulk with one click.
JWT Decoder
Decode JWT header and payload locally and safely.
Cron Parser
Explain cron expressions in plain English and preview runs.
Color to CSS Variables
Generate CSS variables, shades and tokens from any color.