Privacy Policy
Effective: August 2026
BiasLens is an open-source browser extension. This policy explains what happens with your data when you use
it.
1. Data Collection
BiasLens does not collect, store, or log personal information. Specifically:
- No account creation, sign-ins, or profile tracking.
- No cookies, analytics tokens, or browsing history logs.
- No telemetry or background user tracking.
2. How Analysis Works
The extension only runs when you actively trigger it—either by clicking the floating icon or selecting the
context menu option on highlighted text.
- Target Excerpt: Only the specific snippet of text you highlight is processed.
- Local Context: The immediate surrounding paragraph and page title are read locally to
help evaluate tone and context.
- In-Transit Only: This text is sent over HTTPS to our Cloudflare Worker proxy, which
calls the Google Gemini API to calculate scores and return JSON. None of this data is written to a
database or saved to disk.
3. Third-Party Services
Requests route through two platforms solely to perform the requested text analysis:
- Cloudflare Workers: Serves as the API proxy to protect backend keys. Cloudflare does
not retain your request payloads.
- Google Gemini API: Generates the evaluation. Data sent via the API is processed
ephemerally and is not used to train models.
4. Code & Auditing
BiasLens is entirely open source. You can inspect the source code, review how requests are handled, or raise
questions on GitHub at github.com/mistovek016/BiasLens.