Free online MIME type checker. Look up Content-Type by file extension or MIME type. Covers 600+ common file types. Essential for developers.
MIME Type Checker is a free online tool that runs entirely in your browser. No installation, registration, or server uploads required — your data stays private and secure. Use MIME Type Checker to quickly complete tasks and boost your productivity. Built with pure front-end technology, it works on all modern browsers and mobile devices. MIME Type Checker provides accurate results instantly. All processing happens locally in your browser for fast, secure, and reliable performance on any device.