Developer Tools
Professional developer utilities and formatters
6 tools available • 100% free, private & secure
Streamline your development workflow with professional code formatting and validation tools. Format JSON, HTML, CSS, SQL, and test regular expressions—all with syntax highlighting and validation.
Common Use Cases
Essential for formatting minified code, validating JSON syntax, beautifying HTML/CSS, formatting SQL queries, testing regex patterns, and decoding JWT tokens for debugging.
Frequently Asked Questions
Are these tools really free?
Yes! All tools are 100% free with no hidden costs, subscriptions, or usage limits. You can use them as much as you need without any restrictions.
Do I need to upload my files to a server?
No! All processing happens directly in your browser. Your files never leave your device, ensuring complete privacy and security. No uploads, no servers, no data collection.
Is there a file size limit?
The only limit is your browser's memory capacity. For best performance, we recommend keeping files under 50MB for PDF tools and 20MB for image tools. Most modern browsers can handle larger files.
Can I use these tools offline?
Once the page is loaded, most tools work offline since all processing happens in your browser. However, you need an initial internet connection to load the page and its resources.
Which browsers are supported?
Our tools work on all modern browsers including Chrome, Firefox, Safari, and Edge (latest 2 versions). Some features may not work on older browsers. We recommend using the latest version of your preferred browser for the best experience.