Check what crawlers can actually read.
Test one page, compare raw and rendered HTML, or scan several URLs without creating an account.
Start with one pageChoose a check
Start with the question you need answered.
What does a crawler receive from this page?
Bot View Checker
Inspect the crawler-facing response, readable content, headings, metadata, links, and app-shell signals.
Does JavaScript add important page content?
Raw vs Rendered HTML
Compare the initial HTML response with the browser-rendered page and see what appears only after JavaScript runs.
How readable is this page at a glance?
JavaScript SEO Score
Get a compact score based on crawler-visible content and core page signals.
Can search and AI crawlers access the site?
Robots + llms.txt
Review robots.txt rules, sitemap discovery, and llms.txt availability.
Do several pages have the same visibility issue?
Bulk Readability Scan
Scan up to 10 sitemap or pasted URLs for thin HTML, metadata, and app-shell patterns.
Free browser tool
Check the current page without leaving your browser.
Use the Chrome extension for a quick crawler-readability check while reviewing a site. Open the web tools when you need a deeper comparison.
Add to ChromeWhat the checks cover
The signals needed to diagnose crawler readability.
Visible content
Readable text, headings, internal links, and the raw-to-rendered content gap.
Page signals
Title, meta description, canonical URL, and structured data when available.
Crawler access
robots.txt rules, llms.txt presence, sitemap discovery, and multi-page coverage.
When the result shows thin HTML
Keep the live app. Fix the crawler response.
Prerender Buddy serves rendered HTML to recognized crawler requests while visitors continue using the normal website. These checks diagnose technical visibility; they do not guarantee rankings, traffic, or AI citations.
Crawler checks.Ready for your workflow.
Take crawler-readability checks from the browser into local development and CI, with clear output and no account required.Compare CLI, MCP, Chrome, and managed options
Use the same checks where you build.
Inspect a public response, compare crawler profiles, and validate discovery files from one focused command-line tool.
npx @prerenderbuddy/cli check https://example.comApache-2.0 · No account required · No telemetry
Included locally