File Inspector
Inspect a file's name, extension, MIME type, exact size, category, and last-modified date without uploading it.
Choose a file to inspect
View the metadata your browser exposes
Works with any file type
What the browser can inspect
The File Inspector reports the safe metadata available through the browser File API. It is useful for confirming an extension, checking a MIME type, or seeing an exact byte count before using a file elsewhere.
The displayed type is a browser-provided hint rather than a forensic analysis of the file contents.
Frequently Asked Questions
Does the inspector upload or open my file?+
No. It reads only the metadata exposed by the browser and does not upload the file.
Why does a file sometimes have an unknown MIME type?+
MIME type detection comes from the browser and operating system. Some uncommon or extensionless files are not assigned a type.
Can this show hidden operating-system metadata?+
No. Browsers expose only safe fields such as name, size, type, and last-modified time, not filesystem paths or private metadata.