AVIF · Lossless · No upload
Remove metadata from AVIF
See every hidden field in your AVIF image, then strip it — with the pixels copied through untouched.
Where AVIF keeps its metadata
AVIF shares HEIC's ISO Base Media container, so metadata is stored the same way: as items described by iinf and located by iloc, plus optional top-level uuid boxes for XMP.
How we remove it
Identical to HEIC. Metadata item payloads are erased in place so that every recorded offset stays valid and the AV1 image data is left exactly as it was.
Worth knowing about AVIF
- AVIF is increasingly the output format for AI image tools, which makes C2PA manifests and generator tags more common here than in older formats.
- Converting a JPEG to AVIF usually carries the EXIF across. The format changed; the metadata did not.
- Top-level uuid boxes are a common hiding place for XMP packets and are removed as well.
Other formats
The same engine handles JPG / JPEG, PNG, WebP, HEIC / HEIF, GIF, TIFF, MP4 and MOV.
Questions
Frequently asked questions
Does removing metadata change my AVIF file's quality?
No. Identical to HEIC. Metadata item payloads are erased in place so that every recorded offset stays valid and the AV1 image data is left exactly as it was. After each removal we re-read the finished file and, where the browser can decode both, compare every pixel against the original to prove nothing changed.
Where is metadata stored inside a AVIF file?
AVIF shares HEIC's ISO Base Media container, so metadata is stored the same way: as items described by iinf and located by iloc, plus optional top-level uuid boxes for XMP.
Is my AVIF file uploaded?
No. The file is parsed and rewritten by JavaScript on your own device. There is no upload endpoint, so there is also no size cap and no queue.
Can I clean several AVIF files at once?
Yes. Drop as many as you like and download them back as a single ZIP. Files are processed one after another, so memory stays flat no matter how big the batch is.