File Type Detection

Read the file header to detect the real type, flag renamed extensions and show MIME and header bytes

Drop files or a folder here, or click to pickRead the first bytes to find the real type, then compare with the extension

Import files or a folder to see what they really are

Only the first 512 bytes of each file are read to inspect the header — nothing else is read, and nothing is uploaded. Office, EPUB and APK files are ZIP containers, so being detected as ZIP is not a mismatch.