Detailed SEO Extension is a free browser extension for Chrome and Firefox built by SEO professionals for daily on-page analysis. Surpassing 570,000 weekly users, it was acquired by Ahrefs in September 2025.

The Detailed SEO Extension provides on-demand SEO insights through a browser extension activated only when clicked, consuming minimal background resources (266 KB). It pulls title tags, meta descriptions, meta robots tags, and other key metrics including URL structure, canonical tags, word count, headings, links, images, and schema markup. Users can right-click to find other content publishing locations and change the user agent to view sites as Googlebot. The extension is 100% free and operates only when explicitly activated.
Free browser extension for on-page SEO analysis by Ahrefs-owned Detailed.com
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