Free Web Tools
Five browser-based tools that give you real answers about your website. Scan any URL and get an instant score, detailed findings, and a clear path to fix what is broken. Covers classic search, page experience, AI discoverability, agentic-browsing readiness, and AI training permissions. No signup required, no daily caps for real human use.
Available Tools
SEO Health Checker
Scan any URL and run 25 on-page technical SEO checks in seconds. Title tags, meta descriptions, heading structure, structured data, canonical tags, Open Graph, and more. Get a weighted score out of 100 with specific fixes ordered by impact.
Run a scanCore Web Vitals Checker
Measure LCP, INP, CLS, FCP, and TTFB using Google PageSpeed Insights. Mobile and desktop. See real-user field data alongside lab data and get a ranked list of specific fixes to improve your Google rankings.
Check your vitalsAI Discoverability Checker
Audit your site for LLM visibility. Checks AI crawler access, llms.txt presence, schema depth, and semantic structure. Includes free generators for llms.txt, AI-aware robots.txt, and JSON-LD schema.
Check AI visibilityAI Agent-Readiness Audit
Test whether Claude Computer Use, ChatGPT Browsing, OpenAI Operator, and Perplexity Comet can actually reach and use your site. Detects anti-bot gates, CSR-only shells, consent walls, and unfillable forms — then makes real requests as each agent.
Test agent accessAI Permissions Auditor
Audit how clearly your site states its AI permissions across robots.txt, page meta tags, X-Robots-Tag, ai.txt, and the EU TDM Reservation. Per-bot matrix distinguishes training, search, and answering crawlers. Generates a deploy-ready robots.txt.
Audit AI permissionsWhy Five Tools, Not One
Web visibility is no longer a single dial. It is five distinct surfaces, each with its own ranking signals, its own failure modes, and its own commercial outcome. A site can be perfectly structured for Google crawl and still be invisible to AI. It can have clean schema and still be unreachable to an agent that wants to buy from it. It can pass every classic SEO check and still leak its content to AI training programs the owner never consented to. One tool cannot cover all five because each surface grades on a different rubric.
Surface 1 — the foundation
The SEO Health Checker audits the on-page technical fundamentals every search system relies on. Title tags, canonicals, heading hierarchy, schema presence, Open Graph, alt text. Get these wrong and nothing above them matters.
Surface 2 — the performance gate
The Core Web Vitals Checker measures the user-experience metrics Google uses as a direct ranking signal: LCP, INP, CLS, FCP, TTFB. Mobile and desktop, lab and field.
Surface 3 — AI citations
The AI Discoverability Checker asks can AI find and cite you? — checking AI crawler access, llms.txt presence, schema depth, semantic structure, and entity signals.
Surface 4 — agentic browsing
The AI Agent-Readiness Audit asks can AI act on your site? — testing whether Claude Computer Use, ChatGPT Browsing, OpenAI Operator, and Perplexity Comet can actually reach the URL and complete a task. Different agents, different gates.
Surface 5 — AI permissions
The AI Permissions Auditor asks are AI systems using your content the way you want them to? — auditing robots.txt, meta tags, X-Robots-Tag, ai.txt, and TDM Reservation across 19 known AI crawlers, separating training, search, and answering policies.
Run all five and you have a complete picture of where your site sits across every visibility surface that matters in 2026 — classic search, page experience, AI citations, agent reachability, and AI consent.
The Scan / Fix / Rescan Loop
These tools are built for a specific workflow. One that actually closes the loop between diagnosis and fix, instead of leaving you staring at a wall of red and green.
Step 1 — baseline scan
Run all five tools against your primary page. Save the starting scores somewhere you can refer back to. That baseline is your reference point for every improvement and the only way to know whether a fix actually moved the needle.
Step 2 — triage by category
Work failures first, warnings second. Within each tool, the most impactful gaps are the ones marked failed in red. These are the signals that are missing entirely — a title tag that does not exist, a CLS score above 0.25, a User-agent: * rule silently blocking every AI crawler. Fixing a failure usually moves the overall score more than fixing five warnings combined.
Step 3 — deploy the fix
Make the change. Deploy it. Purge your CDN and hosting caches if you have them — the number one reason a rescan does not show improvement is that the fix never actually reached the edge server the tool is scanning.
Step 4 — rescan and confirm
Run the same tool again. Confirm the specific check that was failing now passes. If the lab-level check passes but field data has not caught up, that is expected — Core Web Vitals field data is a 28-day rolling window. Schedule a follow-up scan in two to four weeks.
Step 5 — bank the win, move on
Mark the item done and move to the next highest-impact failure. Three to five cycles of this loop typically moves most sites from a 40-something score into passing territory across all five surfaces. The gains are rarely dramatic on any single fix — they compound.
What Makes These Tools Different
The web is full of free SEO checkers. Most of them are lead-gen funnels dressed as diagnostics. They scan three things, show you a bright red score, and demand your email before revealing which three things. These tools are built differently.
No paywalls, no gated reports
Every finding is shown in full. Every score is explained. The optional email capture at the bottom of each report is for a human follow-up — not to unlock results you already paid for with your attention.
Specific checks, not vague scores
A score of 72 tells you nothing. "Missing canonical tag, 3 images without alt text, CLS of 0.18 driven by late font swap" tells you exactly what to fix. Every check returns the specific signal, its current state, and the threshold it missed.
Generators, not just audits
The AI Discoverability Checker flags a missing llms.txt. Most tools stop there. This one builds the file for you, spec-compliant, ready to deploy. Same for robots.txt with correct AI crawler directives and JSON-LD schema for Organization, FAQ, and Article. Diagnosis and fix, one page.
Real APIs, real data
Core Web Vitals uses Google's official PageSpeed Insights v5 API against real Chrome UX Report field data. No synthetic shortcuts. The SEO and AI checkers fetch your page server-side the way a crawler does, so you see what crawlers see — not what a headless browser happens to render.
Need More Than a Score?
Free tools show you what is broken. Fixing it at scale takes hands-on work. If your site is falling short on any of these audits, book a call and I will fix it for you — or roll the work into a full technical SEO engagement.
Book a Call