File utilities
What File Type Is This?
Find out what any file really is — its true type, size, dimensions and more — even if it has the wrong extension.
How it works
Most file types start with a short 'signature' of bytes. Fylix reads the first few kilobytes of your file on your device and matches them against known signatures for images, PDFs, Office files, archives, audio and video.
Wrong extension?
If a file's contents don't match its name — for example a PNG saved as .jpg — we'll warn you, which explains many 'file won't open' and 'upload rejected' problems.
Frequently Asked Questions
No. Only the first few kilobytes are read, in your browser.
No — it tells you what the file is so you know which tool or app to use.