Which fields you can change
Title, author, description, copyright, software and the capture time, plus comment, subject, keywords and host computer behind the extra fields. The capture time is worth singling out: it is the field photo libraries sort by, so correcting it on a scan or on a shot from a camera whose clock was wrong is what puts the photo back in the right place on a timeline.
Why writing is JPEG-only here
Editing a field means writing a valid metadata block back into the file, and doing that safely takes a per-format writer. JPEG has one that works in a browser. HEIC, AVIF and TIFF have no browser encoder at all, and PNG and WebP keep their text in their own chunk structures. Rather than half-support them, the workspace reads every format it advertises and writes exactly one — so a non-JPEG can be inspected and cleaned here, but not edited.
Nothing is edited in place
Saving does not touch the file you dropped in. It builds a new JPEG with your values written into it and downloads that, named after the original with a suffix. If you get a field wrong, the file on your disk is still the file you started with.
Questions about editing metadata
Does saving re-compress the image?Open
No. Only the metadata block is rewritten; the compressed image data is copied across unchanged, so the pixels in the edited copy are identical to the pixels in the original.
Can I edit a HEIC or a PNG here?Open
No. Writing is JPEG-only. You can inspect any supported format, and you can remove metadata from any of them, but changing a field's value works on JPEG alone.
Will the fields I set show up in other software?Open
The EXIF fields will, in anything that reads EXIF — photo libraries, file browsers, most editors. Note that some applications prefer XMP over EXIF when both are present and may keep showing their own value.
Can I clear a field instead of changing it?Open
Yes. Empty the input and save, and the field is written as empty. To remove the EXIF block outright rather than field by field, use EXIF Removal on the same surface.
By file format
- HEIC metadata viewer
- Open a HEIC or HEIF and read its EXIF, GPS and Apple maker notes in the browser, even where the browser cannot display the image. Nothing is uploaded.
- PNG metadata viewer
- PNG has no EXIF segment. See the tEXt, iTXt and eXIf chunks a PNG is actually carrying, read locally in your browser. Nothing is uploaded.
- WebP metadata viewer
- WebP stores metadata in RIFF chunks, and only in its extended form. See what a WebP is carrying, read locally in your browser. Nothing is uploaded.
- TIFF metadata viewer
- TIFF is where EXIF came from. Read a TIFF's image file directories, tags and byte order in the browser, even though no browser can display one. Nothing is uploaded.
- AVIF metadata viewer
- AVIF uses the same container as HEIC and the opposite licensing, which is why your browser can display one. Read its metadata locally. Nothing is uploaded.
- GIF metadata viewer
- A GIF has no EXIF and no colour profile. See the comment and application extension blocks it does carry, read locally in your browser. Nothing is uploaded.
- RAW metadata viewer
- Most raw files are TIFF underneath, which is why their EXIF, GPS and maker notes can be read in a browser that cannot display one. Nothing is uploaded.