Last updated: May 2026
DOMOwl compares the raw HTML source of a web page with its rendered DOM. It identifies links, headings, images, structured data, meta tags, and text content that differ between source and DOM. This helps SEO professionals and developers understand what search engine crawlers and AI agents may or may not see.
DOMOwl collects no data. Specifically:
No personal information is collected. No browsing history is tracked or stored. No analytics, telemetry, or error reporting is used. No cookies are set. No data is sent to any external server, API, or third party. No user accounts are required or supported.
DOMOwl makes one network request per scan: a fetch to the same URL visible in your browser's address bar. This retrieves the raw HTML that the server sends before JavaScript runs. The raw HTML is then compared with the live DOM entirely within your browser using JavaScript.
Scan results are stored temporarily in local Chrome storage (chrome.storage.local) so the report page can display them. This data stays on your machine and is overwritten on the next scan.
When auto-scan is enabled, this same process runs automatically on each page load. No additional network requests are made beyond the single fetch of the current page URL.
The CSV export and Google Sheets export features generate files locally or copy data to your clipboard. No data is uploaded anywhere.
activeTab: Access the current page URL and DOM when you scan or when auto-scan triggers on page load.
scripting: Inject the comparison script into the active tab to read the DOM and highlight differences.
storage: Store scan results locally so the report page can display them, and store your auto-scan on/off preference.
DOMOwl does not use any third party services, APIs, libraries loaded from CDNs, or external resources. The extension is entirely self-contained.
If this policy changes, the updated version will be published at this URL. The extension version number in the policy header indicates which release it applies to.
Questions about this privacy policy: fridtjof.hungnes@gmail.com