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Free browser-based tools to help you build and debug faster.
Test HTTP requests directly in your browser. Supports GET, POST, PUT, PATCH, DELETE with custom headers and JSON body editing.
Format, minify, and validate JSON instantly. Paste raw JSON to pretty-print it with configurable indentation or compact it to a single line.
Decode and inspect JSON Web Tokens. View the header, payload, and expiry status instantly — no data leaves your browser.
Write a regular expression and see matches highlighted in real time. Supports flags, capture groups, and named groups.
Write markdown on the left and see the rendered output on the right in real time. Supports GFM tables, code blocks with syntax highlighting, task lists, and more.
Convert between Unix timestamps and human-readable dates in both directions. Shows UTC, local time, ISO 8601, and more. Includes a live clock.
Build linear and radial CSS gradients visually. Add colour stops, adjust angle, pick from presets, and copy the ready-to-use CSS.
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