Item logo image for DiagnoSEO - On-Page SEO & GEO Checker

DiagnoSEO - On-Page SEO & GEO Checker

ExtensionDeveloper Tools
Item media 1 (screenshot) for DiagnoSEO - On-Page SEO & GEO Checker

Overview

Free on-page SEO & GEO checker: 0-100 score, keyword placement, schema, redirect check & AI Overviews readiness. No tracking.

Rank well in search engines. Get cited by AI. DiagnoSEO runs a complete on-page SEO and GEO (AI-search) audit on any page in one click. It analyzes the page you're viewing and gives you a clear 0-100 score plus specific, actionable issues - all processed locally in your browser, with zero tracking. WHAT YOU GET - 0-100 SEO & GEO score - an instant health check of the current page, so you know at a glance what needs work. - Essential on-page checkpoints - title, meta description, headings (H1-H6), canonical, robots/X-Robots-Tag, status code, viewport, declared language, word count, image alt coverage and more, organized across 8 clean tabs. - Keyword Placement - check whether your target keyword appears where it matters: title, meta description, H1, subheadings, URL, first paragraph, image alt text and more (12+ scored locations), with in-context highlighting. - Schema & Technical SEO - structured-data detection, hreflang validation with duplicate detection, redirect detection (whether the page reached its final URL via a redirect), and SEO-relevant response-header checks. - GEO / AI Overviews readiness - signals that help AI answer engines (such as Google's AI Overviews, ChatGPT and Perplexity) parse and cite your page, including /llms.txt detection and question-form heading checks. - HTML vs rendered DOM diff - see content that only appears after JavaScript runs, so you know what crawlers actually get versus what users see. PRIVACY FIRST - No tracking, no analytics, no ads, no account required. - All analysis happens locally in your browser. - Network requests go only to the page you're analyzing - to read its HTML, response headers, favicon and /llms.txt. Nothing is sent to our servers. - Nothing is stored or retained after you close the popup. WHO IT'S FOR SEO specialists, content creators, developers and site owners who want a fast, reliable on-page audit - without sending their data anywhere. DiagnoSEO is free. Open it on any page and get your score in seconds.

Details

  • Version
    1.0.0
  • Updated
    June 24, 2026
  • Size
    132KiB
  • Languages
    English
  • Developer
    Website
    Email
    support@diagnoseo.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
Google apps