File Metadata Viewer

For every file you drop in, the tool displays the name, full path, size in bytes (and human-readable form), MIME type, file extension, last-modified date, and a type detected from the file signature. For image files it also reports the pixel dimensions.

In addition to the MIME type reported by the browser, the tool reads the file's magic bytes — the first bytes of the file — to identify common formats such as PNG, JPEG, GIF, WebP, PDF, ZIP, GZIP, RAR, 7Z, MP3, MP4, and fonts. This works even when a file has a wrong or missing extension.

The MIME type comes from the operating system or browser and can be wrong or generic (like application/octet-stream). Magic-byte detection looks at the actual content, so it tells you what the file really is regardless of its extension.

Yes — select several files in the picker or drag and drop a batch. Each file gets its own card, and you can also drop more files later to append them to the list.

Yes. Copy JSON copies a machine-readable summary of every file to the clipboard, and Download JSON saves it as a .json file — handy for inventorying folders or building reports.

No. Metadata extraction and magic-byte analysis run entirely in your browser. Files are read locally and never transmitted, and the tool works fully offline.