What Content Credentials are
C2PA is an open standard from the Coalition for Content Provenance and Authenticity. “Content Credentials” is the consumer name for the same thing, shown as a small CR icon in apps that display it. The current specification is version 2.4, dated April 2026, and a conformance program now certifies which apps and devices may sign credentials.
A manifest does not change how the image looks. It is extra data stored next to the pixels, signed so that tampering is detectable. Because it is file data, re-encoding the pixels into a new file leaves it behind. That is what BlankAI does.
Who adds them in 2026
Most major AI image services now sign their output. OpenAI signs every ChatGPT, Codex and API image. Google says all media made in the Gemini app carries credentials. Adobe adds them to Firefly images and to Photoshop exports that used generative features. Microsoft adds them in Copilot, Designer and Bing Image Creator, Black Forest Labs in the FLUX API, TikTok for content made with its own AI tools, and Anthropic for image files Claude creates.
Cameras and phones sign real photos too: recent Sony, Leica, Canon and Fujifilm bodies and the Google Pixel 10 can add capture credentials. So a manifest does not always mean AI. Drop a file above and BlankAI will show what its manifest mentions.
Reasons to remove them
Manifests can carry more than a label. They can include timestamps, the software and version you used, thumbnails of earlier versions, and in some apps the account name you signed with. A photographer may not want to publish a whole editing history, and a small AI fix in Photoshop can mark an otherwise ordinary photo as AI-edited.
What removing them does not do
It does not remove invisible watermarks. Images from Google and OpenAI also carry SynthID, and their checkers will still recognize them. Durable Content Credentials can be looked up again from a watermark. And it does not change your obligations: platforms that ask you to disclose realistic AI content still expect you to.
Some rules apply to removal itself. China's labeling measures prohibit deleting AI labels from generated content. Several generators, including Black Forest Labs and xAI, forbid removing provenance data in their terms. If you publish an AI-generated image, the simplest honest path is to keep its label.
How to remove Content Credentials from an image
- 1Drop the image into the tool above. BlankAI scans it and lists the C2PA manifest and the names it mentions.
- 2Pick an output format. “Same as original” keeps PNG transparency and WebP files as they are.
- 3Select Remove Metadata. Your browser redraws the pixels into a new file that has no manifest.
- 4Read the report. It re-scans the new file, and you can confirm at contentcredentials.org/verify that no credentials are found.