Paper spider – Privacy policy

Last updated: 3 October 2026

Paper spider is a Chrome extension that finds a passage in a PDF and shows an animated spider walking to it. This page explains what data the extension handles.

What the extension stores

If you add an Anthropic API key, the extension saves it in your browser's extension storage (chrome.storage.local) on your computer. It is not synced, and it is never sent to the developer. Press Forget key in the extension, or remove the extension, to delete it.

What the extension sends, and to whom

When you press Find it or Find more and you have added a key, the extension sends these items directly from your browser to Anthropic (api.anthropic.com):

• your question,
• the text of the open PDF, or pictures of its pages if it has no text layer,
• your API key, which Anthropic uses to identify your account.

Anthropic handles this data under its own terms and privacy policy: anthropic.com/legal/privacy. Without a key, nothing is sent anywhere. Searches then run only inside your browser.

To show a PDF in the viewer, the extension downloads it again from the address already open in your tab. That request goes only to the site that hosts the PDF.

What the extension does not do

• The developer has no server and receives no data from the extension.
• No analytics, tracking, advertising or browsing history collection.
• No data is sold or shared with third parties, apart from the Anthropic request described above, which you start yourself.
• The extension does not read web pages that are not PDFs. On ordinary pages, it only checks whether the page is a PDF.

Contact

Questions: Iyad Sultan, isultan@khcc.jo