Calabi Labs · Guide · 2026-05-24
What is C2PA and how do you remove it
What Is C2PA?
C2PA stands for Coalition for Content Provenance and Authenticity — an open technical standard that embeds a verified, tamper-evident record of a digital file's origin directly into the content itself. Think of it as a built-in, cryptographic passport for images, video, and audio.
When a photo or video is captured or edited, C2PA metadata records exactly who made it, when, where, and with what device or software. That record is cryptographically signed so it can't be quietly altered later. The goal is to combat deepfakes and AI-generated content by making provenance verifiable — you can tell if a file was AI-generated, heavily edited, or shot on a specific camera.
C2PA was developed by a broad industry coalition including Adobe, Microsoft, Google, Intel, and others, and it has been adopted across cameras, editing software, browsers, and social platforms. You'll start seeing C2PA labels more frequently as adoption grows.
How C2PA Works
C2PA embeds metadata using JPEG, PNG, or video containers (MP4, MOV). A signed manifest is baked into the file at one or more stages:
- Capture signing — A compatible camera (Canon, Nikon, Sony, and others) signs the file at the moment of capture with a hardware attestation.
- Edit signing — Editing software like Adobe Photoshop can sign the file after making changes, recording what was done.
- Viewing verification — Browsers and platforms can check the manifest to display a content credential label (the badge you see on images in some browsers).
The signatures use X.509 certificates chained to trusted authorities, making spoofing the record extremely difficult without access to the private keys.
How to Remove C2PA Metadata
There are legitimate reasons you might want to strip C2PA data — privacy concerns, file size reduction, or working with legacy systems that don't support it.
Option 1: Use a Dedicated Tool (Recommended)
Specialized metadata strippers can remove C2PA manifests cleanly without re-encoding the file, preserving quality.
Calabi — calabilabs.com — lets you remove C2PA and other metadata from images in bulk. Upload your files, select what to strip, and download clean versions. No account required for basic use.
Option 2: Command-Line Tools
For developers or power users:
- Metatomb — open-source C2PA stripper that removes manifests from JPEG/PNG files without re-encoding.
- ExifTool — run
exiftool -all= file.jpgto strip metadata, though results may vary on deeply embedded C2PA manifests. - ImageMagick — re-save the image (
magick input.jpg -strip output.jpg) to strip most embedded data. This re-encodes the file, which may affect quality slightly.
Option 3: Re-save in Legacy Software
Saving an image in older software that doesn't understand C2PA will often strip the manifest, as the legacy encoder simply doesn't know to preserve it. This is a quick but imprecise method and will also strip other metadata you might want to keep.
Option 4: Convert to a Format Without Support
Converting to TIFF, BMP, or certain video formats that lack C2PA implementation will strip the manifest — at the cost of portability and quality control.
Key Things to Know
- Removing C2PA doesn't make an image "fake" — it just removes the record of its history. Use this responsibly.
- C2PA removal is legal in most jurisdictions — metadata stripping is not the same as forging credentials. However, using it to misrepresent provenance may have legal consequences depending on context.
- Stripping doesn't guarantee invisibility — forensic tools can sometimes detect that metadata was removed even after stripping.
- C2PA is still rolling out — not every image you see has it, and not every platform reads it. Mass adoption is ongoing.
The Fastest Way to Strip C2PA
If you need to remove C2PA metadata from one or many images right now, the easiest path is to use a tool built specifically for it. Calabi handles batch stripping, preserves original quality, and works entirely in your browser — no installs, no sign-ups.
Try Calabi free at calabilabs.com — 3 cleans, no card.