GPT Watermarker

Remove SynthID Watermark

Clear Google's invisible SynthID signal from AI images — Gemini, Nano Banana & ChatGPT — in the frequency domain, and strip the C2PA content credentials in the same pass. No quality loss. For video, C2PA is removed; SynthID video removal isn't supported yet.

SynthIDC2PA

Remove hidden watermark

Strip the invisible SynthID & C2PA content credentials these AI images carry.

Quality
Standard resolution (up to 1024px) — costs 1 credit / image.

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PNG · JPG · WebP — resized to 1024px max for GPU processing

SynthID removal uses GPUs and may take several minutes — check History later.

Remove SynthID Watermark: The Real Frequency-Domain Cleaner

SynthID is Google DeepMind's invisible watermark — a statistical signal woven into the pixels of AI images from Gemini, Nano Banana, Nano Banana Pro, Imagen and ChatGPT. It is not metadata. That is the catch most "SynthID removers" miss: stripping EXIF or C2PA tags leaves the file looking clean while the SynthID signal stays baked into the image, ready to be read back by Google's detector. This SynthID remover targets the signal where it actually lives — the frequency domain of the pixels — and clears the C2PA Content Credentials manifest in the same pass, so the image no longer reports itself as AI-generated to either layer of checking. Upload a Gemini, Nano Banana or ChatGPT image, run the hidden-watermark clean, and download a file that survives the detector with no visible change to quality. For AI video, SynthID removal is not reliable yet — so video mode removes the C2PA content credentials only, and we say so up front instead of pretending otherwise.

Metadata Stripping Is Not SynthID Removal

Most free "SynthID removers" only delete metadata — EXIF, IPTC, and sometimes the C2PA manifest. That removes the labels that say "made with AI," but it does nothing to SynthID itself. SynthID lives in the pixel values, distributed across the image as a low-amplitude pattern that survives screenshots, cropping, resizing, JPEG re-compression, and a full metadata wipe. You can run a metadata cleaner, upload the result to Google's SynthID Detector, and still get "watermark detected."

This tool works in the frequency domain: it disrupts the statistical pattern SynthID relies on while keeping the visible image perceptually identical. The C2PA manifest and other provenance metadata are stripped in the same operation, so both the invisible pixel signal and the visible-to-machines credentials are gone after one pass.

Which AI Images Carry SynthID

Google applies SynthID across its image stack: Gemini (including the Nano Banana and Nano Banana Pro image models), Imagen, and images generated through the Gemini app, AI Studio, and Vertex AI. OpenAI's ChatGPT images (GPT Image and DALL·E 3) now carry Google's SynthID in the pixels too — OpenAI adopted it in 2026 — alongside their C2PA Content Credentials. If your image came out of any of these, a plain metadata wipe will not clear the hidden watermark — you need a tool that targets the signal in the pixels.

This page handles all of them. Not sure your image is even marked? You can check it for SynthID and C2PA first. Otherwise, upload the file, choose hidden-watermark removal, and the cleaner disrupts the SynthID signal and strips the C2PA manifest together, returning a clean download.

SynthID on Video: Why We Only Remove C2PA

Google extends SynthID to AI video from Veo and Flow, embedding the signal across frames. Removing a per-frame frequency watermark from video without re-encoding and degrading every frame is a different, much harder problem than it is for a single still — and any tool that claims a fast, lossless "SynthID video removal" is almost certainly only deleting metadata and calling it SynthID.

So we are honest about the limit: in video mode, this tool removes the C2PA content credentials and container provenance metadata — the layer that marks a clip as AI-generated for YouTube, TikTok, Instagram, Adobe, and stock libraries — while copying the encoded video and audio untouched, with no quality loss. The in-pixel SynthID signal on video is not removed yet. For the full frequency-domain clean, use image mode on a still frame.

Quality, Privacy, and How It Compares

The frequency-domain pass is tuned to stay below the threshold of human perception — the visible image looks the same, with no blur, banding, or color shift. C2PA removal only discards header metadata, so it never touches the picture. Video mode copies the encoded streams with no re-encode, preserving source resolution, framerate, and audio exactly.

Where thin competitors offer a one-line "drag and drop, metadata gone" widget, this tool does the part that actually matters — the pixel-level signal — and tells you precisely what each mode does and does not clear. Finished results are saved to your private History for 24 hours and then deleted. For the visible Gemini sparkle logo, use the main Gemini image tool; for ChatGPT stills, the ChatGPT image remover handles SynthID and C2PA the same way.

SynthID Watermark Removal FAQs

Straight answers on what each workflow removes, how files are handled, and what result you should expect.

Does deleting the metadata remove SynthID?

No. SynthID is embedded in the pixels, not in EXIF, IPTC, or C2PA metadata. A metadata wipe removes the 'made with AI' labels but leaves the SynthID signal intact, and Google's detector will still read it. You need a tool that targets the signal in the frequency domain — which is what hidden-watermark mode does here.

Can SynthID actually be removed?

The invisible pixel signal can be disrupted so it no longer reads reliably, while the visible image stays unchanged. No remover is guaranteed 100% against every future detector version, but frequency-domain processing is the only approach that addresses SynthID itself rather than just the surrounding metadata.

Which AI images does this work on?

Gemini, Nano Banana and Nano Banana Pro, Imagen, and ChatGPT (GPT Image and DALL·E 3) images. It disrupts the invisible SynthID pixel signal and strips the C2PA content credentials in one pass.

Can you remove the SynthID watermark from a video?

Not the in-pixel SynthID signal — that is not reliably removable from video yet, and we won't pretend it is. Video mode removes the C2PA content credentials and provenance metadata that flag a clip as AI-generated, with no re-encode and no quality loss. For a full SynthID clean, use image mode on a still frame.

Will removing the watermark reduce image quality?

No. The frequency-domain pass is designed to be imperceptible, and C2PA removal only discards header metadata. The visible image is unchanged.

Is it legal to remove a SynthID watermark?

Removing watermarks from content you generated yourself is legal in most places — backups, your own commercial work, research, and verification are common uses. If an AI-labelling obligation applies to your use — the EU AI Act is the main one — respect it, and leave the provenance on work that isn't yours.
    Remove SynthID Watermark — Free SynthID Remover (Image & Video) | GPT Watermarker