Loading tool...
Search for a command to run...
11 free tools available
Essential developer tools for encoding, decoding, formatting, and debugging. JSON formatter, Base64 encoder, URL encoder, regex tester, and more. All tools run locally in your browser.
Format, validate, and beautify JSON data. Minify or pretty-print with customizable indentation.
Validate and beautify YAML data. Identify syntax errors and convert YAML to JSON.
Validate and format XML data. Identify syntax errors and beautify or minify XML code.
Beautify and format SQL queries for various dialects like MySQL, PostgreSQL, and more.
Encode text to Base64 or decode Base64 strings. Supports UTF-8 characters.
Encode special characters in URLs or decode URL-encoded strings for debugging.
Encode HTML entities or decode them back. Prevent XSS and display HTML safely.
Test regular expressions with real-time matching. Supports all JavaScript regex flags.
Decode and inspect JSON Web Tokens. View header, payload, and verify signatures.
Real-time Markdown editor and previewer with GFM support and HTML export.
Visual cron expression builder and explainer for crontab and automation.
Real-time processing as you type with no delays.
All tools run locally. Your code never leaves your device.
No npm packages to install. Just open and use.
One-click copy results to clipboard for easy sharing.
Yes. All processing happens in your browser using JavaScript. Your data never gets sent to any server, making these tools safe for handling sensitive information.
Once loaded, most tools work offline since they run entirely in your browser. Bookmark them for quick access.
Our JSON formatter supports standard JSON as per RFC 8259. It handles nested objects, arrays, and validates syntax errors.
The regex tester uses JavaScript's built-in RegExp engine, supporting flags like g (global), i (case-insensitive), m (multiline), and more.