Developer Tools

Format, validate, minify, search, sort, and inspect JSON immediately in the browser, with code and tree views for easier debugging.

Generate standards-compatible UUID v4 random identifiers or time-ordered UUID v7 identifiers in the browser.

Encode Unicode text or local files as Standard Base64 or Base64URL, and decode valid Base64 back to text or a downloadable file.

Generate SHA-256, SHA-384, SHA-512, SHA-1, or MD5 checksums for text and local files, and compare them with an expected value.

Convert screen colors among HEX, RGB/RGBA, HSL/HSLA, HSV/HSB, and approximate CMYK while checking WCAG-formula contrast.

Convert exact signed integers between binary, octal, decimal, hexadecimal, and any base from 2 through 36.

Encode or decode URL components, full URI text, or form-style data while preserving duplicate query keys and never fetching the URL.

Convert Unix timestamps in seconds, milliseconds, microseconds, or nanoseconds to dates, and convert UTC or browser-local dates back to epoch values.

Test JavaScript regular expressions against local text, inspect matches and capture groups, and avoid freezing the page with worker-enforced limits.

Convert object-array JSON to CSV or parse quoted CSV into JSON with delimiter detection, optional type inference, and spreadsheet-safety controls.

Encode text with named, decimal, hexadecimal, or minimal HTML entities and decode one level back to inert plain text.