C2PA Content Credentials:
What They Are and How MetaRemover Handles Them
AI tools like ChatGPT and Adobe Firefly embed hidden provenance data in images. MetaRemover detects, reads and removes these Content Credentials — fully in your browser, without uploads.
Check your file for C2PAWhat is C2PA?
C2PA (Coalition for Content Authenticity and Integrity) is an open technical standard developed by Adobe, Microsoft, Intel, BBC, and others. It defines a way to embed a cryptographically signed manifest directly inside a media file — an image, video or document.
The manifest records the complete provenance chain: who created the file, with which software, when it was created or edited, and what transformations were applied. Each entry is signed with a digital certificate, making it tamper-evident.
C2PA is often described as a “nutrition label” for digital media — it tells you where the content came from.
C2PA vs EXIF — Key Differences
| Feature | EXIF / XMP / IPTC | C2PA |
|---|---|---|
| Purpose | Camera & editing metadata | Content provenance & authenticity |
| Cryptographic signature | ✗ None | ✓ Required |
| Tamper-evident | ✗ No — anyone can edit | ✓ Yes — changes invalidate signature |
| AI generation info | ✗ Not standardized | ✓ Explicit AI source type |
| Who embeds it | Camera, photo editors | AI generators, certified tools |
| Readable by | Any EXIF tool | C2PA-aware tools (MetaRemover, c2pa.org) |
| Removable | ✓ Easy | ✓ Yes — MetaRemover removes it |
Which Tools Embed C2PA?
Signs all generated images. Signed by OpenAI Media Service, algorithm Es256.
Full C2PA support with trusted certificate. Provenance includes generation and edit history.
Content Credentials added on save since version 24. Records all applied edits.
Embeds C2PA in AI-generated images. Certificate from Microsoft.
Hardware-level signing. Content Credentials embedded at capture time.
Authenticity verified via C2PA in select professional models.
What MetaRemover Shows for C2PA Files
When you upload a file with a C2PA manifest, MetaRemover parses the full manifest using the official @contentauth/c2pa-web SDK — entirely in your browser via WebAssembly. No file is uploaded to any server.
What Happens After Removing C2PA?
- ✓The image content is preserved exactly — pixels, colors, resolution unchanged
- ✓The C2PA manifest is completely removed — no provenance data remains
- ✓The file will no longer show as AI-generated in C2PA-aware tools
- ⚠The provenance chain is broken — the image can no longer be verified as authentic
- ⚠Standard EXIF and GPS data are also removed in the same operation
Supported Formats
| Format | C2PA location | Detect | Remove |
|---|---|---|---|
| JPEG | APP11 segment (0xFFEB) | ✅ | ✅ |
| PNG | caBX / C2PA chunk | ✅ | ✅ |
| WebP | C2PA RIFF chunk | ✅ | ✅ |
| HEIC | Not yet | — | — |
| MP4 / MOV | uuid box | — | — |
| XMP / attachment | — | — |
Frequently Asked Questions
Check your files for C2PA now
Drop any JPEG, PNG or WebP — MetaRemover will detect and parse the full manifest in seconds. No account, no upload, no tracking.