Privacy Policy

Last updated: April 23, 2026

Sunny Reader ("the extension") is a Chrome browser extension that presents web articles in a distraction-free reader view. This policy explains exactly what happens to your data when you use it.

What stays on your device

The extension uses Chrome's local storage (chrome.storage.local) and the browser's IndexedDB to save the following on your computer only:

• Your preferences (theme, font, width, spacing, toolbar configuration).
• Highlights you create on web pages, so they can be restored when you revisit.
• Sticky notes and cloud notes you add to articles.
• Your reading library: snapshots of articles you save, plus any notes and highlights attached to them.
• An internal "last update" timestamp used to avoid showing the What's New page more than once every 45 days.

This data is never uploaded. You can export it at any time from the Options page ("Export Settings") and delete it with "Reset All Settings" or by removing the extension.

Network requests

Sunny Reader makes network requests only in direct response to specific user actions. No data is sent automatically or on a schedule.

• Dictionary look-ups (when you use the built-in dictionary) send the word you look up—and nothing else—to api.dictionaryapi.dev (for definitions and pronunciations) and api.datamuse.com (for synonyms, related words, and spelling suggestions). No account, no identifier, no URL is sent.
• Wikipedia overlay fetches public CSS from wikipedia.org to preserve the article's native visual appearance. No user data is sent beyond what your browser already sends to Wikipedia when you visit.
• "What's new" page. On install or major update, the extension opens the Sunny Reader homepage (https://sunnyreader.com) in a new tab, passing the extension version as a URL parameter. You can disable this behavior in Options.

No third-party analytics, tracking, or advertising service is contacted at any time.

Permissions, explained

• activeTab, scriptingInject the reader view into the page you're reading, only when you click the Sunny Reader icon.
• storageSave preferences, notes, and library on your device.
• notificationsOccasional non-blocking status messages (e.g. when reader view cannot be opened on a restricted page).
• declarativeNetRequestWithHostAccessModify response headers on the active tab only so the reader iframe can display cross-origin images. No cross-site tracking, no URL blocking beyond what reader view needs.
• favicon (optional)Granted only if you opt in, lets the reader and library show each site's favicon.

Data retention

All data is retained on your device until you delete it or uninstall the extension. Uninstalling Sunny Reader removes all extension-scoped local storage and IndexedDB data for the extension.

Data sharing

Sunny Reader does not share, sell, or transfer user data to third parties for any purpose. The extension has no server infrastructure, no authentication, no backend.

Children

Sunny Reader is a general-purpose reading tool with no targeting or advertising. It does not knowingly collect data from children under 13.

Changes to this policy

Material changes to this policy will be noted on the sunnyreader.com homepage and in the extension's "What's new" release notes. The "Last updated" date at the top of this policy will reflect the most recent revision.

Contact

Privacy questions or concerns: privacy@sunnyreader.com.