HTML Compare – Visual UI & Live Page Diff Inspector

Compare two pages by link. Scan Diff marks text, images, alt text, links, and CSS.

See every change directly on the page, right in the user interface. HTML Compare works with any web page you can open by URL, including a page on localhost. Put two addresses side by side and it marks what changed: text, images, links, and styles. The marks sit where a visitor would see them, and a list tells you the kind of change and which page it is on. Use it before you publish a page update, a campaign, a language version, or a redesign. Compare at desktop or mobile width, then switch to the live page and keep scrolling in sync. Tools (Scan Diff and Live) Remove an overlay, cookie banner, or extra block before you compare. Ignore text in a selected element so expected copy (timestamps, test data, UAT vs production wording) does not hide a real layout or CSS regression. You can apply remove or ignore on one page or both. Free includes 20 comparisons per week. Pro removes that limit and adds hidden-content differences plus the HTML for each changed item. $1.99 / month $16.99 / year $49.99 / lifetime