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Upload your file
The PNG or JPEG that Gemini or another Google AI tool generated, or a supported document.
Gemini Watermark Remover
Google's SynthID marks Gemini-generated content, and it can't be removed. This free tool does remove the separate C2PA metadata Gemini images may also carry.
Drop a file, or click to browse
PNG, JPEG, SVG — max 25MB
Processed locally in your browser. Files are never uploaded or stored.
Read this first
This removes C2PA metadata — SynthID can't be removed
Google's SynthID embeds an invisible signal directly into Gemini-generated images, and increasingly text — not as removable metadata, but as part of the content itself (pixel patterns for images, token-selection patterns for text). No tool, including this one, can strip that signal without altering the content. What this tool does remove is different: a separate, removable C2PA content-credentials manifest that some Gemini images also carry, plus standard EXIF/XMP metadata.
Feature
What SynthID Actually Is
SynthID is Google's technology for identifying AI-generated content by embedding a signal directly into supported output — its implementation differs by content type and product. It's built to survive edits like cropping, compression, and paraphrasing, precisely because it's part of the content rather than a metadata tag sitting alongside it.
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Feature
Every Format Gemini Exports, In One Place
Upload PNG, JPEG, SVG, PDF, DOCX, HTML, or Markdown output — from Gemini or anywhere else — and clean it in the same place. The format is detected automatically, so there's no need to juggle separate tools for images and documents.
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Feature
Nothing Changes But the Metadata
Every file is parsed at the chunk or segment level rather than re-rendered, so metadata blocks come out and the underlying image or document data goes back in exactly as it was — pixel for pixel, byte for byte.
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Output
A clean file — same picture, none of the metadata
You get back the exact same file, just without the hidden C2PA manifest — or anything else that was riding along with it.
Pixel-for-pixel match
Not a single pixel changes — only the metadata chunks attached to the file are gone.
See it before you download
Every field the scan turns up gets listed, so you know what was removed before you commit to it.
Stays on your device
The File and Blob APIs handle everything locally — nothing about your file touches a server.
How It Works
Five steps, entirely in your browser
No account, no server upload — everything happens on your device.
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The file is scanned
The tool looks for a C2PA manifest and any EXIF/XMP metadata — not for SynthID, which it can't detect or touch.
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Removable metadata is stripped
Any C2PA manifest and other hidden metadata found are removed automatically.
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Preview the result
See the signer, algorithm, and software that were embedded before you download.
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Export your file
Download the cleaned file, byte-identical except for the removed metadata.
FAQ
Gemini Watermark Remover FAQ
The honest answers, including what this tool can't do (SynthID).
Can this tool remove SynthID from an image or text?
No. SynthID is embedded directly in the content itself — pixel patterns in images, token-selection patterns in text — not stored as separate, removable metadata. No metadata tool, including this one, can strip it without altering the underlying content.
What is Google SynthID?
SynthID is Google's technology for identifying AI-generated content by embedding information directly into supported output. Its exact implementation differs depending on the content type (image, text, audio) and the Google product involved.
Then what does this tool actually remove for Gemini content?
It finds and removes the C2PA manifest (a signed metadata block naming the generator) and any other hidden EXIF/XMP metadata stored in the file. It does not and cannot alter the content itself, which is where SynthID lives.
Does paraphrasing remove a SynthID text watermark?
Not reliably. Paraphrasing changes wording, which can disrupt some watermarking schemes, but SynthID is specifically designed to be resilient to common edits like this. It isn't something this tool relies on or claims to achieve.
Is my file uploaded anywhere?
No. Everything runs client-side in your browser using the File and Blob APIs. Your file is never sent to a server.
Will this affect file quality?
No. The tool parses the file at the chunk/segment level and only removes metadata blocks — the actual content is copied byte-for-byte, so there's no re-encoding or quality loss.
Is this free to use?
Yes, completely free with no signup, no file limits, and no watermark added to your download.
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