Private Everything runs in your browser. No uploads, no tracking, no signup./ zero data collected
Est. 2026 · Privacy-first
Tools that keep your data on your device.
Ten carefully tuned utilities for developers and designers. Every result is computed locally — we never see what you paste.
Start with the JSON Formatter →
01 · Featured
JSON Formatter & Validator
Catches the four errors that ruin every API debug session: trailing commas, single quotes, unquoted keys, comments.
02 · Featured
JWT Debugger
Decode JWT headers and payloads in your browser. Unlike most online decoders, your token never leaves the device.
10
Tools · 0 servers
0
Bytes uploaded by you
$0
To use, forever
03
JSON Diff
See what changed between two documents — path by path.
04Timestamp Converter
Unix ↔ human date, both directions, UTC and local.
05UUID Generator
Bulk v4 UUIDs (1–100) with one-click copy.
06URL Parser
Break URLs into parts, decode params, inspect redirects.
07Contrast Checker
WCAG AA/AAA verdicts for any two colors.
08Image Compressor
Shrink JPG/PNG up to 80% with quality control.
09QR Code Generator
Text or URL to a scannable, downloadable PNG.
10Unit Converter
Length, weight, temperature, data, time.