SEOtest.app

SEOtest.app is a free, no-signup on-page SEO analyzer that delivers detailed reports on meta tags, headings, links, images, and technical SEO files for any website.

What is SEOtest.app?

SEOtest.app is a web-based SEO analysis tool that evaluates a website's on-page health by scanning its HTML and technical files. Simply enter a URL, complete a brief security check, and receive a comprehensive report covering meta tags, Open Graph and Twitter Cards, heading hierarchy, robots.txt, XML sitemap, image alt texts, internal and external links, canonical URLs, HTTP headers, page speed, and redirect chains. The tool is also available as a free Chrome extension for Chromium-based browsers, enabling quick audits without leaving your browser.

Key Features

• Meta tag analysis — Checks title tags and meta descriptions for length, uniqueness, and quality.
• Social media preview validation — Validates Open Graph and Twitter Card tags to ensure proper rendering on platforms like Facebook, Twitter, and LinkedIn.
• Heading structure audit — Analyzes H1-H6 hierarchy and warns of missing or duplicate headings.
• Technical SEO checks — Inspects robots.txt, XML sitemap, canonical URLs, HTTP headers, and redirect chains for compliance with best practices.
• Image optimization verification — Checks alt text presence and quality for all images on the page.
• Link analysis — Evaluates internal and external links for broken links, redirects, and nofollow status.
• AI SEO preparation — Validates the presence and structure of llms.txt files, which help AI search engines understand your site.
• No signup required — All features are available without creating an account; the tool is free to use.

Who is it for?

• SEO professionals — Perform quick audits to identify technical issues during site migrations or optimization sprints.
• Web developers — Debug meta tag implementations, Open Graph errors, and redirect chains directly from the browser extension.
• Content creators — Check that blog posts have proper headings, meta descriptions, and social previews before publishing.
• Digital marketers — Monitor SEO health across multiple client sites without manual checks.

Use cases

• Quick SEO audit: Paste any URL and get a full report in seconds, covering all critical on-page elements.
• Social preview testing: Validate how your page will appear on Facebook, Twitter, and LinkedIn before sharing.
• AI search optimization: Ensure your site includes an llms.txt file to increase visibility in ChatGPT, Perplexity, and other AI search engines.
• Technical SEO debugging: Inspect HTTP status codes, canonical tags, and redirect chains to fix crawling and indexing issues.

How does SEOtest.app work?

1. Enter the URL you want to analyze on the homepage.
2. Pass a Cloudflare Turnstile security verification (required once per session).
3. The tool scans the page's HTML, HTTP headers, and linked technical files, then generates a detailed report within seconds.

Pricing

SEOtest.app is free to use for all core features. A Chrome extension is also free. Additional premium plans may exist, but pricing details are not displayed on the page.

FAQ

Is SEOtest.app free?

Yes, it is completely free with no signup required. The Chrome extension is also free.

What does SEOtest.app check?

It checks meta tags (title, description), Open Graph and Twitter Cards, heading hierarchy, robots.txt, XML sitemap, image alt texts, internal and external links, canonical URLs, HTTP headers, page speed, redirect chains, and llms.txt for AI search engines.

Does SEOtest.app support AI search optimization?

Yes, it includes validation of llms.txt files, which are used by AI search engines like ChatGPT and Perplexity to understand your website's content.

Do I need to create an account?

No, you can use the tool without signing up.

Is there a browser extension?

Yes, a free extension for Chromium-based browsers (Chrome, Edge, Brave) is available at seotest.app/extension.