One box · ~160 tools · 100% private
Every developer utility. In your browser.
Format JSON, decode JWTs, convert timezones, hash strings, build regex — without bouncing between 40 bookmarks or sketchy ad-heavy sites. Every transform runs client-side.
Privacy by default
100% client-side transforms. Your data never leaves your browser.
SEO-first
Every page SSR'd. Lighthouse 100s gated by CI on every PR.
Keyboard-first
⌘K from anywhere. Jump to any tool in two keystrokes.
Shareable state
Inputs encoded in URL hash — share without leaking server-side.
Categories
View all →JSON
Format, validate, transform, diff JSON
Encoding
Base64, URL, HTML entities, hex
Text
Diff, case convert, lorem, slugify, sort
Time
Unix, timezone, ISO 8601, cron, dates
Crypto
Hashing, password, UUID, random
Regex
Test, build, explain regular expressions
Network
Uptime check, DNS, my IP, URL, HTTP status, user agent
Color
Convert, contrast, palettes
Image
Base64, convert, optimize, QR
Code
SQL, chmod, JWT, syntax helpers
AI
Token count, LLM cost, prompt diff
Misc
Everything else useful
Active build
Currently 52 tools live · 12 categories · new tools ship weekly.