Developer tools

Validate, pretty-print, or minify JSON safely in your browser.

Encode text to Base64 or decode Base64 back to text.

Encode or decode URL components without sending data away.

Generate SHA-1, SHA-256, SHA-384, SHA-512, or legacy MD5 checksums locally.

Convert common Markdown syntax into clean HTML.

Translate colors between HEX, RGB, and HSL formats.

Indent XML and catch mismatched or malformed markup.

Remove unnecessary whitespace from front-end code.

Add practical indentation and line breaks to minified front-end code.

Turn rows of tabular text into accessible HTML table markup.

Convert tabular CSV to JSON and JSON arrays back to CSV.

Create cryptographically random version 4 UUIDs.

Inspect JWT header and payload data without verifying the signature.

Compare two code snippets line by line without uploading them.

Extract practical browser, engine, operating-system, and device clues.

Test a JavaScript regular expression and inspect every match.

Escape HTML-sensitive characters or restore encoded text.

Convert Unix seconds or milliseconds to readable dates and back.

Build and explain common five-field cron schedules.

Look up the meaning and category of common HTTP response codes.

Create a basic robots.txt policy with sitemap support.

Tune a shadow visually and copy the resulting CSS declaration.

Turn comma-separated rows into an aligned Markdown table.

Edit HTML beside a sandboxed live preview without executing pasted scripts.

Format SQL for a selected dialect with a real parser-based formatter.

Convert Unicode text to and from binary, hexadecimal, or octal bytes.

Validate, pretty-print, and convert YAML to JSON or JSON to YAML in your browser.

Convert cURL commands into JavaScript Fetch, Python Requests, Go, and PHP code.

Convert numbers between binary, octal, decimal, hex, base58, and text with BigInt precision.

Convert JSON to clean XML or parse XML back into structured JSON in your browser.