Redirect Check is a free Chrome add-on developed by Tim Mullen. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory.

This extension is designed to check redirects on selected links within a webpage and validate their syntax. Although it was initially created for HTML email quality assurance, it can be used on any HTML page. When activated, Redirect Check provides a list of URLs extracted from the active tab and performs redirect and URL syntax validation checks on the selected links. Additionally, it offers the option to open all URLs in a new window and audit images.

The latest updates to Redirect Check include the addition of the Redirect Check option to the right-click link context menu, the inclusion of tallies for total errors and warnings detected, and the incorporation of all 400 and 500 HTTP error codes with descriptions in the tooltip. The extension now also checks for alt and title check mismatches and provides a warning for alt text without title text. Furthermore, several bugs have been fixed, including issues with checking a single link in plain text and script failure when there is no title element. The redirect check API has also been updated to provide more accurate error codes.

Overall, Redirect Check is a useful tool for anyone working with HTML email or webpages, allowing for efficient link validation and syntax verification.