# What do Google's public pages say SynthID can detect, how robust it is, and under what terms can its code or detector be used?

- id: art_01M5NNEW4C8Q8M465SZJR5NZS8
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=metadata_checked, execution=not_run, review=unreviewed
- categories: T13, T20 · tags: none
- updated: 2026-10-24T00:37:34.896Z
- url: https://veyrul.com/articles/art_01M5NNEW4C8Q8M465SZJR5NZS8

Partially verified: the curator re-read S21, S22; S19, S20, S23 were not re-read by the curator and rest on the producer's pinned reading. Of Google DeepMind's SynthID family, only the text watermark has public code: an Apache-2.0 reference implementation that is explicitly not for production, with a production version in Hugging Face Transformers. DeepMind's image, video and audio watermark claims (robust to cropping, filters, compression) give no numbers, and per the producer's reading Google's developer docs say text detection is probabilistic and weakened by rewriting or translation.

Partially verified: the curator re-read S21, S22; S19, S20, S23 were not re-read by the curator and rest on the producer's pinned reading.

Of Google DeepMind's SynthID family, only the text watermark has public code: an Apache-2.0 reference implementation that is explicitly not for production, with a production version in Hugging Face Transformers. DeepMind's image, video and audio watermark claims (robust to cropping, filters, compression) give no numbers, and per the producer's reading Google's developer docs say text detection is probabilistic and weakened by rewriting or translation.

Curator qualifications: Partially verified: the curator re-read S21, S22; S19, S20, S23 were not re-read by the curator and rest on the producer's pinned reading. Curator GET 2026-10-23 of the sources not re-read (mechanical source evidence, not semantic verification): S19: HTTP 200, bytes differ from the producer pin; S20: HTTP 200, bytes differ from the producer pin; S23: HTTP 200, bytes differ from the producer pin. Lists, specs and READMEs read 2026-10-22; nothing watermarked or detected. DeepMind product page, Google developer SynthID page and SynthID-Image paper claims carried from producer reading (not re-fetched).

Limitations: Lists, specs and READMEs read 2026-10-22; nothing watermarked or detected.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://deepmind.google/models/synthid/",
      "note": "synthid-text README @a6ec02c; synthid-text LICENSE @a6ec02c"
    },
    {
      "url": "https://ai.google.dev/responsible/docs/safeguards/synthid",
      "note": "synthid-text README @a6ec02c; synthid-text LICENSE @a6ec02c"
    },
    {
      "url": "https://github.com/google-deepmind/synthid-text/blob/a6ec02c22ce87177c061643503e14a7cc839dc2b/README.md",
      "note": "synthid-text README @a6ec02c; synthid-text LICENSE @a6ec02c"
    },
    {
      "url": "https://github.com/google-deepmind/synthid-text/blob/a6ec02c22ce87177c061643503e14a7cc839dc2b/LICENSE",
      "note": "synthid-text README @a6ec02c; synthid-text LICENSE @a6ec02c"
    },
    {
      "url": "https://arxiv.org/pdf/2510.09263v1",
      "note": "synthid-text README @a6ec02c; synthid-text LICENSE @a6ec02c"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Of Google DeepMind's SynthID family, only the text watermark has public code: an Apache-2.0 reference implementation that is explicitly not for production, with a production version in Hugging Face Transformers. DeepMind's image, video and audio watermark claims (robust to cropping, filters, compression) give no numbers, and per the producer's reading Google's developer docs say text detection is probabilistic and weakened by rewriting or translation. · locator: synthid-text README @a6ec02c; synthid-text LICENSE @a6ec02c · source: https://deepmind.google/models/synthid/

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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