Backlinko SEO Checker

Backlinko SEO Checker is a free, web-based tool that audits a single page for on-page SEO issues, performance data, and keyword and backlink insights. It helps users identify problems such as missing or poorly sized titles and meta descriptions, broken internal and external links, crawl and indexing barriers, thin content, and mobile usability issues. The tool provides an SEO score, a list of issues sorted by severity, and recommendations for improvement, with data powered by Semrush and reporting from the SEOquake browser extension.

The checker runs 38 individual checks grouped into eight areas: meta tags and SERP snippets, page speed and Core Web Vitals, crawl and indexing access, content and heading structure, mobile usability and accessibility, technical setup and site trust, social and local visibility, and links and website authority. It surfaces top keywords from Google Search, high-value backlinks, organic competitors, shared keywords, and competition levels, with links to Semrush's Keyword Magic tool and Site Audit for deeper analysis. The tool works on mobile devices and desktop, and reports can be exported to a file. It is designed for business owners, bloggers and creators, freelancers and agencies, and in-house marketers. Three free checks per day are available with no account required.