Audit HTTP Response Headers For Status Codes, Redirect Chains and Loops, Slow Pages, X-Robots-Tag, Vary and Link Tags.

HEADMasterSEO helps SEO professionals and webmasters audit huge lists of URLs for common technical SEO errors. The program lets you extract, filter, sort and export HTTP header data. You can use it to clean sitemaps, find redirection problems, inappropriate status codes, internal server errors, broken links and examine raw http/https response headers. You can easily check pages for X-Robots-Tag, Vary, and Link headers.
It is specifically built to help technical SEO audits of response headers (not HTML content). As such it is easier to use and the best tool for the job. HEADMasterSEO uses HEAD requests to save bandwidth and increase speed for fast servers. It features a low memory mode with practically unlimited URL checking capabilities (competitors are constrained by memory).