# SynthIDDetector.org

> SynthIDDetector.org is a free web tool that checks an image for three signals — a Google-signed Content Credentials (C2PA) manifest, AI-generation metadata fields, and a pixel-level AI scan — and tells you whether the file likely came from Google AI. It does not and cannot read the SynthID watermark itself; only Google's own detector can do that.

SynthIDDetector.org is an independent tool and is not affiliated with, endorsed by, or sponsored by Google or Google DeepMind. SynthID is a trademark of Google LLC.

## Docs

- [Agent index](https://synthiddetector.org/agents/index.md): site map and reading order for agents
- [Product facts](https://synthiddetector.org/agents/product.md): what the tool checks, honest capability boundary, privacy
- [Pricing facts](https://synthiddetector.org/agents/pricing.md): free checks vs sign-in AI scans
- [Full reference](https://synthiddetector.org/llms-full.txt): extended description of signals, coverage and limits

## Pages

- [Home / Detector](https://synthiddetector.org/): drop an image, read its credentials and metadata, run a pixel-level AI scan
- [AI Image Detector](https://synthiddetector.org/ai-image-detector): pixel-level AI scan that ignores stripped metadata — works on screenshots and re-uploads
- [Gemini & Nano Banana Image Detector](https://synthiddetector.org/gemini-image-detector): check for the signals Google embeds in Gemini image output
- [C2PA Checker](https://synthiddetector.org/c2pa-checker): read Content Credentials (signer, app, actions, validation) free, in the browser
- [What is SynthID?](https://synthiddetector.org/what-is-synthid): guide to Google's invisible AI watermark — coverage, limits, sources
- [Pricing](https://synthiddetector.org/pricing): plans and credits for AI scans

## Key facts

- Free check (no account): Content Credentials (C2PA) read and AI-metadata fields read, both done in the browser.
- Sign-in check (credits): pixel-level AI scan that keeps working after screenshots or social re-uploads strip metadata.
- When signals point to Google AI, the tool links to Google's official SynthID Detector (https://synthid.com) to confirm the watermark.
- "Nothing found" never means "real" — stripped files produce empty results.
- Available in 10 languages: English, 简体中文, Русский, Deutsch, Français, 日本語, 한국어, Español, Português, Türkçe.

## Contact

- support@synthiddetector.org