File Type Detector
Inspect a file on this device: signature, MIME type, size, and recommended conversions. Nothing is uploaded to Format Convertly servers.
Drop any file to inspect it on this device
How to use this tool
Drop a file
The first bytes are read locally to identify the real format.
Review attributes
See extension, MIME type, signature, and media details when available.
Choose a next step
Open a recommended converter or tool without re-uploading.
Frequently Asked Questions
More on quality loss: conversion quality guides · compression guides
Is this tool free?
Yes. Format Convertly tools run free in your browser with no signup required.
Do you store my files?
No. Processing stays on your device — there is no tool upload to our servers.
Does it work on mobile?
Yes. Use any modern phone, tablet, or desktop browser.
Need a format conversion instead?
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Ready to convert more formats?
Browse converters or jump back to the tool above.