Last updated: 9 November 2026
Viewkit is a browser extension that changes how YouTube looks and behaves in your own browser. It has no accounts, no analytics and no tracking. Your settings and data stay on your device.
Viewkit stores the following with Chrome's extension storage, on your computer only:
The developer never receives any of this. Removing the extension deletes it.
If you turn on the optional Chrome sync setting, your settings and resume positions are copied through your own Google account's Chrome sync, like any other Chrome extension data.
Viewkit Pro is sold through Polar, which acts as the merchant of record and processes your payment and e-mail address under its own privacy policy. To activate and confirm Pro, the extension sends your licence key, a fixed device label ("Viewkit (Chrome)") and the activation ID to Polar's licence service (api.polar.sh). It does this when you activate the key and about once a week afterwards. Nothing else is sent.
Viewkit reads the YouTube pages you open only to change them in your browser, for example to hide elements, filter cards or apply a theme. It does not collect, store remotely or share what you watch or search.
We do not sell, rent or share user data. We do not use data for advertising, credit scoring or any purpose unrelated to the extension's features.
Viewkit does not knowingly collect any personal information from anyone.
Questions: info@esdisoft.com (Esdisoft)
Viewkit is not affiliated with or endorsed by YouTube or Google. YouTube is a trademark of Google LLC.