The Oppolis Cloud Web Proofing Extension is a browser add-on developed by Oppolis Software. It is designed to collaborate on websites and HTML5 content through Oppolis Cloud, a platform specifically created for creative and marketing teams. This extension works in conjunction with the Oppolis Cloud web app, allowing collaborators to take section grabs and full window snapshots of online content such as websites, HTML5 banners, emails, and programmatic ads.

With the Oppolis Cloud Web Proofing Extension, users can easily capture screenshots of online content and have them automatically added as single pages in a multi-page proof within Oppolis Cloud. This allows for seamless presentation and sharing with team members. Additionally, the extension provides over 10 proofing tools, allowing users to drop comments on the captured screenshots and easily navigate through different versions during the review cycle.