A Privacy Policy Short Enough to Read
Last updated September 15, 2026. The summary: the URL you check is fetched once, its social image is measured once, pasted HTML and the generator stay on your machine, and this site sets no cookies for the product.
What Happens When You Check a URL
When you submit a URL to the checker, this site's server fetches the page once, following redirects, keeps the head of the document, and downloads the og:image (and a differing twitter:image) once to read its format, size and weight. The head and the measurements are passed to your browser, where the analysis and the previews are built, and nothing is kept on the server afterwards: no history, no archive, no dataset of checked sites. The URL you entered travels in the report page's address so you can reload or share it; it is not logged beyond the web server's standard access log. Requests carry a user agent that names this tool, so the site you check can see that a request came from socialpreview.tools; it cannot see who asked for it.
Pasted HTML and the generator stay in your browser
The paste tab hands the HTML to the report page through your browser's session storage and analyses it there with JavaScript; it is never sent to this server. The generator is plain client-side code too. In both the report and the generator, the preview cards show the social image, which your browser loads directly from the site that hosts it, exactly as a platform would.
Cookies and storage on this site
This site sets no cookies for the product. It keeps nothing in localStorage or sessionStorage. There is no login and no preference to remember.
Page views are measured with Google Analytics, which sets its own first-party cookies (_ga and _ga_*) and sends the page address, a random client identifier and technical details about your browser to Google. The data is used only to see which pages get read. Google's handling of it is described in the Google privacy policy. Browsers with a Global Privacy Control signal, an ad blocker or scripts disabled are not measured.
Third parties this site touches
Fonts load from Google Fonts, which means your browser requests font files from Google's servers as described in the Google privacy policy. No ad networks or tracking pixels load here. The server does what any web server does: it delivers the page files and may write standard, short-lived access logs handled by the hosting provider. Rate limiting keeps a hashed, temporary count of requests per visitor address so the fetcher cannot be abused; those counters expire within the hour.
How to clear local data
The paste tab leaves the pasted HTML in session storage until the tab closes; closing it clears it. The report address contains the URL you checked, so clearing your browser history removes that trace. If you emailed a URL to the contact address for debugging, say the word and that email gets deleted too.
If this policy ever changes, the date above changes with it, and the substance will stay consistent with the terms of use.