Performance, Core Web Vitals, SEO and accessibility score via Google PageSpeed Insights. Mobile and desktop side by side, all in one run.
Enter a full URL (with https://). The test runs through the official Google PageSpeed Insights API and usually takes 15–30 seconds.
The Free SEO check combines PageSpeed with on-page checks, schema analysis and prioritized tasks.
Performance is a confirmed Google ranking signal — but only at the threshold level. Going from 60 to 90 helps. Going from 90 to 99 rarely moves the needle. The interesting work happens at the bad-to-good transition.
| Metric | Good | Needs improvement | Poor |
|---|---|---|---|
| LCP (Largest Contentful Paint) | ≤ 2.5 s | 2.5 - 4.0 s | > 4.0 s |
| INP (Interaction to Next Paint) | ≤ 200 ms | 200 - 500 ms | > 500 ms |
| CLS (Cumulative Layout Shift) | ≤ 0.1 | 0.1 - 0.25 | > 0.25 |
Since March 2024 INP replaced FID as the interactivity vital. This tool still reports TBT (Total Blocking Time) as a lab proxy — useful, but field INP data from Google's CrUX dataset is authoritative.
Google uses mobile-first indexing since 2021. Mobile scores rank pages, desktop scores are a UX courtesy. If your mobile score is 40 and desktop is 95, treat the desktop number as decoration and fix mobile.
Generative engines (Perplexity, ChatGPT Search) have tight render budgets when fetching candidate sources. A slow page may be skipped entirely from the citation pool, even if the content is perfect. The 4-second mark seems to be the soft cutoff in 2026 — pages slower than that drop out of cited sources noticeably.
Every tool runs without an account. Combine them for a quick technical SEO check or use one in isolation.
Check crawler rules for Googlebot, GPTBot, ClaudeBot, PerplexityBot in one run.
Check robots.txt → XML-SitemapValidate XML sitemaps, resolve sitemap indexes recursively, find broken URLs.
Test sitemap → OnpageCrawl up to 100 pages: status, title, meta, H1, schema markup, internal links.
Crawl website → robots.txtFetch file, parse, see all user-agents, allow/disallow rules and sitemaps at once.
Fetch robots.txt → sitemap.xmlURL count, sitemap index, lastmod coverage and XML syntax errors in seconds.
Analyze sitemap → JSON-LDExtract JSON-LD, check required fields, detect drift between schema and content.
Check schema → DNS · WHOISDNS records (A, AAAA, NS, MX, TXT) plus WHOIS lookup in one overview.
Check domain → Text-ToolCharacter, word and sentence count plus reading time. Browser-only, no upload.
Analyze text → NetzwerkYour own IP address, browser, language and screen size visible at a glance.
Show IP → SicherheitGenerate secure passwords in browser — cryptographically strong randomness, no upload.
Generate password →Free SEO & GEO Check
SEO score, AI visibility and citability of your website in 30 seconds — no registration required.
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