How to Edit Metadata of Any File
Everything you need in one place: what metadata is, where each format hides it, how to edit or delete it safely — with a free browser tool that does the work without uploading your files.
What file metadata actually is
Metadata is the information about a file that travels inside the file itself: the camera and GPS data in a photo, the artist and album in an MP3, the author and company in a Word document, the title and creation date of a PDF. It's stored in standardized containers next to the actual content — and because most software never shows it, people are often surprised by how much a file reveals.
Editing photo metadata (EXIF, XMP, IPTC)
JPEGs carry EXIF (camera, lens, exposure, timestamps, GPS), often XMP (Adobe editing data) and sometimes IPTC (captions and credits). To edit:
- Drop the photo into the metadata editor.
- Click any value — Artist, Copyright, User Comment, dates — and type a new one; delete tags you don't want with the trash icon.
- For location privacy use the Remove GPS button, or Remove All Metadata for a completely clean file.
PNG and WebP store text chunks and EXIF chunks respectively and are edited the same way. TIFF and RAW are view-only — convert to JPEG first if you need to clean them. Full walkthrough: how to remove EXIF data from photos.
Editing MP3 and audio metadata (ID3 tags)
MP3 uses the ID3 standard: a flexible ID3v2 block at the start and an optional ID3v1 tail. With the MP3 metadata editor, change the title, artist, album, year, genre and track number by clicking the values, add missing frames (album artist, composer, publisher…), and remove the whole tag for anonymous files. FLAC (Vorbis comments), WAV (INFO lists) and M4A work the same way.
Editing video metadata (MP4, MOV)
Videos store QuickTime/iTunes atoms — title, artist, comment, dates, encoder — inside the moov container. The video metadata editor edits those atoms and repairs the internal offset tables when the file size changes, so players keep working. Removing recording dates and software traces is a one-click operation per file.
Editing PDF metadata
PDFs have an Info dictionary (title, author, subject, keywords, producer, dates) and usually an XMP packet. The PDF metadata editor edits both and writes a standards-compliant incremental update, so pages, fonts and signatures stay byte-identical. To check PDF metadata first, just drop the file in — version, page count and every property appear instantly.
Removing metadata from Word, Excel & PowerPoint
Office files are ZIP packages with XML property parts: author, last modified by, company, manager, revision count, editing time, custom properties and a preview thumbnail. The Word and Excel removers (they also handle PPTX) wipe those parts while copying the document body unchanged.
Why people edit metadata
- Privacy: strip GPS coordinates, author names and device identifiers before sharing (see the risk list below).
- Organization: fix wrong titles, artists and dates so media libraries sort correctly.
- Professionalism: correct copyright lines and credits on published photos; set proper PDF titles for search results.
- Compliance: sanitize documents in legal, medical and journalistic workflows.
The metadata risk checklist
| File | What it may reveal |
|---|---|
| Phone photos | Exact GPS position, device model, timestamps, sometimes your name in Artist/Copyright |
| Screenshots | Capture software, timestamps |
| Word / Excel | Author and last-modified-by names, company, manager, editing time, revision count |
| Author, producer software, creation dates, original file paths in some producers | |
| MP3 / MP4 | Encoder software, recording dates, purchase accounts, play counts, unique IDs |
Run any file through the tool above for a concrete answer — the red warnings mark the high-value leaks automatically.
FAQ
How do I edit metadata for free?
Use the tool on this page: drop your file, click a value to edit it, download. It handles photos, audio, video, PDF and Office documents, costs nothing, requires no account and works offline after loading.
Can I add metadata to a file that has none?
Yes — the “Add Tag” menu creates the standard fields for each format: EXIF comments, XMP title/creator, ID3 frames, MP4 atoms, PDF Info entries or Office properties. The tool builds the correct container if the file doesn't have one yet.
Does editing metadata change the file's hash?
Yes — any byte change alters checksums like SHA-256. That matters for signed or legally sealed documents; everywhere else it's expected. The media content itself, however, remains untouched.
Which method keeps the highest quality?
Any metadata-only tool does — this one included — because the compressed pixels, audio frames or document text are copied byte-for-byte. Re-saving through an editor (Photoshop export, media converter) is what degrades quality; tag editing never does.