Paste a URL. Get back a single report covering SEO, schema, E-E-A-T, voice, mobile parity, performance, AI-search signals, and publishing cadence — plus a ready-to-paste fix prompt you can drop into Claude or ChatGPT. No signup, no tracking, no paywall. Built it because the paid tools charge a subscription for output you could do in one pass.
Paste a URL. The Mega Analyzer fetches it twice (desktop and mobile UAs), the aux files (robots.txt, sitemap.xml, llms.txt), validates crawlability (Disallow conflicts, sitemap XML validity, URL-in-sitemap, dead-end detection, noindex + X-Robots-Tag overrides), then runs every check we can run against a single URL and scores six buckets: SEO, Schema, E-E-A-T, Voice, Mobile Parity, Performance + AI. Scan time varies by page.
Allow a few minutes for a scan. Some pages take longer. Nothing is changed on your site.
The level and prompt framing choices are optional. Leave these as they are if unsure.
When the static fetch can't see your real content, paste the post-hydration HTML here. The Mega Analyzer scores the pasted HTML against every dimension (SEO / schema / E-E-A-T / voice / mobile / performance + AI / crawlability). If you also paste a URL above, sibling resources (robots.txt, sitemap.xml, llms.txt, well-known files) are still fetched normally — those rarely depend on JavaScript. New to DevTools? Step-by-step walkthrough for Chrome / Firefox / Safari / iPhone / Android.
Tip: in paste mode, the URL field is optional. If provided, sibling resources + CrUX field data are fetched from it; otherwise those checks read as "Not applicable in paste mode".
Read the story behind this tool: One URL, Every Audit in One Pass — The Mega Analyzer →
The Mega Analyzer gives you everything the other tools do in one report.
Ten buckets in one pass: SEO, Schema, E-E-A-T, Voice, Mobile parity, Performance + AI signals, Accessibility (WCAG 2.2 AA), Indexing hygiene, Retrieval (AEO) readiness, and an AI fix prompt assembled from every finding. See the methodology page for the per-bucket check list.
No. The tool fetches the raw HTML response twice — once with a desktop user agent and once with a mobile user agent. JavaScript-rendered content that requires a headless browser is not scored. This matches how most AI crawlers actually fetch your site.
No signup, no tracking pixels beyond standard GA4 + Clarity, no paywall. The tool runs in your browser against a server-side fetch proxy with origin allowlisting and per-IP rate limits.
Each check returns pass / warn / fail / info. Warns count as 0.5 of a pass. Bucket score is the weighted average across that bucket's checks. The overall grade is the unweighted average of bucket scores, mapped to A–F. The full rubric and per-check weights are published at /methodology/.
isitagentready.com (by Cloudflare) tests five categories of agent-readiness signals. Mega Analyzer probes the same agent-readiness surface (Content-Signal, Link headers, MCP server card on both Cloudflare and SEP-2127 paths, Agent Skills, WebMCP, Web Bot Auth, OAuth metadata, x402, MPP, UCP, ACP) and also runs SEO, schema, E-E-A-T, accessibility, and publishing-cadence checks in the same pass.
The check set is versioned. See /methodology/changelog/ for the dated probe history. The most recent batch — nine SHIP-NOW checks covering AGENTS.md, /.well-known/mcp.json (Cloudflare path), x402 v2, OAuth-PR Link headers, Vary: Accept on markdown, per-page markdown companions, llms-ctx.txt, JSON Feed v1.1, and schema:usageInfo — landed on 2026-05-10.