Files & local bytes / 31 related tools
MIME-type detector
Compare browser-reported MIME type, filename extension, and common leading-byte signatures. It runs on the selected bytes in this browser tab, and never overwrites the original.
MIME-type detector
Compare browser-reported MIME type, filename extension, and common leading-byte signatures.
Best-effort local detection only. Treat untrusted files as untrusted even when a type appears recognized.
Next in this job
Chosen from where these tools sit in the catalogue — the same workbench, the same category, the same words. Nothing here measures what you or anyone else opened.
- File-signature inspectorInspect leading bytes against a disclosed set of common signatures.Next along in the same workbench
- Magic-byte inspectorShow the first 32 bytes and a common-signature match.Next along in the same workbench
- File metadata viewerList File API name, relative path, byte size, MIME hint, and modification time.Next along in the same workbench
- CSV type converterNormalize one column to trimmed text, number, boolean, or ISO date.Another type tool