Summarize This — Privacy Policy

Last updated: May 9, 2026

Summarize This is a Chrome extension that summarizes web articles and YouTube video transcripts using Anthropic's Claude API. This document describes what data the extension handles and where it goes.

What the extension does

When you press Cmd/Ctrl+Shift+S on a web page, the extension:

• Reads the visible text content of that page (or the transcript of the video, if it's YouTube)
• Sends that text to Anthropic's Claude API along with your API key
• Displays the returned summary in an in-page modal

What data is handled

Page content. The text of the page you invoke the extension on is sent to api.anthropic.com. That is the only third-party endpoint the extension communicates with. The extension does not read or transmit any page content unless you explicitly trigger it with the keyboard shortcut or toolbar icon.

Claude API key. Your Claude API key (which you enter in the extension's options page) is stored locally in your browser via Chrome's chrome.storage.sync API. It is sent to api.anthropic.com only to authenticate your summarization requests. It is never sent anywhere else.

What data is not handled

• The extension does not collect or transmit your browsing history.
• The extension does not collect personal information, location data, financial data, or any authentication credentials beyond the Claude API key you provide.
• The extension does not include analytics, telemetry, or third-party tracking.
• The extension's developer has no access to any of your data — there is no backend server.

Anthropic's data handling

When the extension sends page content and your API key to api.anthropic.com, that data is subject to Anthropic's Privacy Policy and Usage Policies:

• anthropic.com/legal/privacy
• anthropic.com/legal/aup

Contact

Questions about this extension or its data handling: contact@smybuilds.com