Site Check-up only runs on normal web pages (http or https). Chrome blocks extensions on chrome:// pages, the Chrome Web Store and some built-in pages.

Speed is measured from your own visit, so network, device and caching all affect it. Reload the page once, then run the check again.

Open Report settings on any report, update the details and click Save settings. Then save the PDF again.

Some servers reject quick automated requests. Open the link yourself; if it works, you can ignore that finding.

Chrome blocks extensions on chrome:// pages, the Chrome Web Store and PDF viewers. Try a normal web page.

That schema type has no built-in rules yet. Use the Rich Results Test link on the Schema tab to check it with Google.

The page has no og:image tag, or the image URL is blocked. Add a 1200×630 og:image.

Pages that build everything with JavaScript after loading may need a moment. Reload the page, wait for it to finish, then open the extension again. Try Selection to grab just the part you need.

This happens once per site, the first time you click its button. It is used only to fill the message box, and you can say no: the text is still copied so you can paste it. Revoke it any time from the link at the bottom of the popup.

Chat sites change often. A ! badge appears on the toolbar icon and your text is already on the clipboard: paste with Ctrl/Cmd+V.

Counts are estimates. English is about four characters per token and other scripts are counted at higher rates. Real counts vary by model.

Design Grabber shows computed values, which can include overlays and gradients flattened by the browser. Check against the brand guidelines.

Stylesheets served from other domains can't be read by extensions. Values are still grabbed from the page itself.

Logos drawn as CSS backgrounds or inside canvas can't be detected. Right-click the logo on the site to save it.