Free C2PA Content Credentials Tool
Attach cryptographic content credentials to your images. Prove authorship, set copyright, and flag AI generation. Verify credentials on any image. Free, no signup needed.
How C2PA content credentials work
Upload your image
JPEG, PNG, or WebP
Enter author details
Name, copyright, license, AI flag
Download signed image
Contains a cryptographic C2PA manifest
What are C2PA content credentials?
C2PA (Coalition for Content Provenance and Authenticity) is an open standard backed by Adobe, Microsoft, Google, BBC, and camera manufacturers like Sony, Nikon, and Leica. It defines how to attach a cryptographic manifest to images, video, and audio files.
The manifest records who created the content, what tools were used, copyright and license information, and whether AI was involved. Because the manifest is cryptographically signed, any tampering is detectable. EXIF metadata, by contrast, can be freely edited or stripped.
C2PA credentials are already supported in Adobe Photoshop, Lightroom, Firefly, Google Pixel cameras, Samsung cameras, and verification tools like Content Credentials (contentcredentials.org). The EU AI Act also references C2PA as a disclosure mechanism for AI-generated content.
Who uses C2PA content credentials
Photographers
Prove authorship before publishing to stock sites, social media, or client galleries.
AI artists
Transparently disclose AI generation with the tool name. Supports EU AI Act compliance.
Content creators
Attach copyright and license before distributing to subscribers or platforms.
Editors and verifiers
Check if an image has provenance data. See who made it and whether AI was involved.
C2PA vs. invisible watermarking
For the strongest protection, use both. Sign with C2PA for public provenance, then add an invisible watermark for leak tracing.
C2PA content credentials FAQ
- What are C2PA content credentials?
- C2PA (Coalition for Content Provenance and Authenticity) is an open standard for attaching cryptographic provenance data to media files. A C2PA manifest records who created the image, the copyright notice, license, and whether AI was involved. Any compatible viewer can verify these credentials.
- How is this different from EXIF metadata?
- EXIF data is easy to strip or edit. C2PA credentials are cryptographically signed, so if anyone tampers with them, the signature breaks and verification fails. That makes C2PA actual evidence of authorship.
- Can content credentials be removed?
- Technically, yes. Someone can strip C2PA metadata. That's why we recommend pairing it with our invisible watermarking tool. The watermark survives metadata stripping and gives you a second layer of protection.
- Is this compatible with Adobe Content Credentials?
- Yes. Images signed with this tool produce standard C2PA manifests that work in Adobe Content Credentials, the Content Authenticity Initiative's verify tool, and any other C2PA-compatible viewer.
- What information can I include in the manifest?
- Author name (required), copyright notice, license (e.g., CC BY 4.0 or All Rights Reserved), website URL, and an AI-generation flag with the tool name. If you leave the copyright blank, it defaults to '© [year] [author]'.
- What file formats are supported?
- JPEG, PNG, and WebP for both signing and verification.
- Is my image stored on your servers?
- No. Images are processed in memory and discarded right after the response is sent. We don't store, log, or keep your images.
- Is this tool really free?
- Yes. This demo version has a daily limit per IP address. For unlimited signing, batch processing (up to 50 images), and API access, see our subscription plans.
- What is the Content Authenticity Initiative?
- The Content Authenticity Initiative (CAI) is an industry coalition led by Adobe, BBC, Microsoft, and others pushing the C2PA standard. The goal is to make content provenance universal across cameras, editing tools, social platforms, and newsrooms.
- Should I use C2PA, invisible watermarking, or both?
- Both. C2PA gives you verifiable provenance metadata that anyone can check. Invisible watermarking adds a hidden signal that survives metadata stripping, format conversion, and social media re-encoding. Together they cover different attack vectors.
This is a free demo with daily usage limits. Powered by our partner ForensicMark, a neural watermarking API for invisible image watermarking and C2PA content credentials. Images are processed in memory and not stored. For unlimited signing, batch processing, and automated leak enforcement, see our subscription plans. By using this tool you agree to our Terms of Service.