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MIME Type Detector
Drop any file to discover its MIME type before uploading or emailing. Prevents mismatched content-types that break downloads.
File name
No file selected
Size: --
Detected MIME type:
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MIME types instruct browsers and email clients how to handle files. Sending a PDF labelled as plain text may force downloads or break inline previews. Use this detector to double-check files before sharing.
What this tool does
MIME Type Detector helps you drop any file to discover its MIME type before uploading or emailing. Prevents mismatched content-types that break downloads.
What you get
MIME Type Detector produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.
Report a bug
If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.