DeepLumen AI Visibility Checker

Compare ChatGPT-User-style HTML with the rendered page. Get a text-volume score, content diff, and local PDF report.

DeepLumen AI Visibility Checker helps website owners, marketers, and SEO teams understand how much of a web page an AI-style crawler can access compared with what visitors see in the rendered page. HOW IT WORKS Open any web page and click the DeepLumen extension icon to start an analysis. The extension displays two separate results: • AI Readiness score: a rule-based assessment of page structure and content quality. • Content Visibility score: a comparison of the text available in the crawler-style HTML and the text visible in the rendered page. Open “View Complete Analysis” to inspect a side-by-side comparison. Highlighted sections show content that appears to visitors but may not be available to an AI crawler. The “What AI is missing” section distinguishes potentially valuable information, such as prices, specifications, and reviews, from navigation or interface text. QUICK AND DEEP SCANS Quick Scan analyzes the current page without making additional requests to the website. Deep Scan also checks robots.txt, llms.txt, sitemap information, and image sizes to assess additional crawlability dimensions. KEY FEATURES • Compare crawler-style HTML with the rendered page • Measure differences in visible text volume • Review AI Readiness and Content Visibility separately • Inspect missing content in a side-by-side comparison • Identify potentially valuable missing information • Export a local PDF analysis report • Run only when the user clicks the extension PRIVACY Analysis is performed locally in the browser. DeepLumen does not require an account, does not use analytics, and does not upload analyzed page content. The extension accesses the active page only after the user clicks its icon. Deep Scan makes additional requests only to the website being analyzed. IMPORTANT The extension simulates an AI-style crawler request using a ChatGPT-User-style user agent. It does not call ChatGPT and does not predict whether a page will be cited or ranked by an AI or search engine.