Turn Long Articles into Clear Takeaways.

Brevira is built to run entirely on Google Chrome's built-in AI model (Gemini Nano), which executes locally on your computer's hardware. Because summarization runs on your local hardware with $0 marginal server compute cost, Brevira is offered completely free of charge without paywalls, subscriptions, or tiered accounts.

No. Brevira operates under an on-device architecture. When you summarize a supported article, the text is extracted and processed locally inside your browser. Brevira's extension code does not transmit your article text, URLs, titles, or summaries to external AI servers or analytics platforms. Voluntary actions you initiate (such as sending a support email or joining Discord) are handled directly through those respective services.

Brevira relies on Google Chrome's built-in AI (Gemini Nano) via Chrome's native Summarizer API. While modern processors, dedicated graphics cards (GPUs), or Neural Processing Units (NPUs) can assist with on-device machine learning workloads, the presence of specific hardware components alone does not automatically guarantee that Chrome has enabled its built-in AI for your device.

Google Chrome directly manages model availability and determines whether local execution is supported in your specific browser environment. Because compatibility is determined by Chrome rather than a fixed hardware checklist, the most reliable way to find out is to install Brevira and check its setup card directly in the side panel. As Chrome's on-device AI ecosystem matures, device compatibility may continue to expand over time.

Several factors can affect whether Brevira's AI summarization is available on your device.

Possible reasons:

• AI model not downloaded: Chrome may not have downloaded or completed setting up its built-in AI model.
• Device or browser availability: Chrome may report that its built-in AI model is currently unavailable for your device or browser environment.
• Chrome version or settings: Your Chrome installation may need updating, or its on-device AI functionality may be disabled or restricted.
• Initial model download interrupted: An internet connection, available storage, or Chrome's model setup process may prevent the model from becoming ready.
• Unsupported article content: The current webpage may not contain enough readable article content for Brevira to summarize (under 200 characters of narrative text), or may be an unsupported format such as a standalone PDF or dynamic web application dashboard.

Note: There is a clear distinction between device compatibility issues and unsupported webpage content. If Brevira reports "Content Too Short" or an extraction notice, the AI engine is functioning properly, but the active page does not contain standard article narrative text.

Troubleshooting Steps:

1. Update Google Chrome to the latest available version on your desktop.
2. Check that Chrome's On-device AI setting is enabled, where available.
3. Open Brevira and check its AI model availability or setup status.
4. If the model requires downloading, follow Brevira's setup instructions and allow Chrome to complete the download.
5. Keep an active internet connection during initial setup.
6. Once setup is complete, reopen or retry Brevira on a supported article.
7. If the problem continues, contact our support team.

Advanced Diagnostics (Optional): For advanced troubleshooting, you can inspect Chrome's built-in AI model status through chrome://on-device-internals in your Chrome address bar. This is a technical diagnostic tool and is completely optional for everyday users.

We're working to expand Brevira's availability so more users can benefit from on-device AI summarization. We'll share confirmed updates through our official channels as compatibility improves.

Thank you for supporting Brevira!

If Chrome has not previously downloaded its on-device AI model components, Brevira will display a "Setup Required" card. Clicking "Download AI Model" prompts Chrome to download the necessary model weights in the background. Brevira displays a live progress bar tracking setup progress. Once complete, Brevira is ready for local offline summarization.

Brevira extracts text from supported web articles rendered in your active browser tab using Mozilla Readability. If you have legitimate access to view the article text on your screen (e.g., through an active personal subscription), Brevira can extract and summarize that visible text locally. Brevira does not bypass paywalls or access content restricted by servers. Standalone local PDF files and dynamic web application interfaces lacking narrative text are not currently supported.

No. Brevira is built exclusively for desktop Google Chrome. Mobile browsers (including Chrome on Android and iOS Safari) do not currently support Chrome's native side panel APIs or desktop Web AI APIs.

Brevira strictly adheres to the principle of least privilege. It avoids broad host permissions (<all_urls>). The activeTab permission grants temporary access to read the active webpage only when you explicitly click the Brevira icon. The scripting permission injects Mozilla Readability to isolate narrative article text from page clutter. The sidePanel permission allows Brevira to display its interface cleanly alongside your tab.

You can reach out directly by emailing brevira.support@gmail.com or by joining our official community Discord server at https://discord.gg/86yTYQw3X3.