Free tools · No signup
Free SEO + AI Visibility tools
Nine focused micro-tools for SEO, AI search visibility, page performance, security and accessibility. Each runs against any URL in seconds. No signup, no rate limit on basic use.
Want the full picture? Nova Insight runs a complete six-pillar audit covering every dimension below plus a head-to-head competitor benchmark. Run a free audit →
HTTP Header Checker
Security headers, in one click
HSTS, CSP, X-Frame-Options, Referrer-Policy and friends — see which ones your site sets, what each one prevents, and how to fix the missing ones.
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robots.txt Analyser
Parse + flag common mistakes
Fetch your robots.txt, parse every rule, flag conflicts, and show which AI crawlers are allowed or blocked. Catches the typos that silently de-index pages.
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llms.txt Validator
AI-discovery markup, validated
Validate your llms.txt against the spec, check link freshness, and grade the quality of the markdown summary AI assistants will read.
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AI Crawler Allowlist Checker
Can ChatGPT, Claude + Gemini read your site?
Probes the twelve known AI user-agents against your robots.txt and surfaces the exact status of each — allowed, blocked, or unaddressed.
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Schema.org Validator
JSON-LD, validated against the spec
Paste a URL — we extract every JSON-LD block, validate the types against schema.org, and flag missing recommended properties for Organization, Product, FAQPage, Article, BreadcrumbList.
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Sitemap Checker
URL count, freshness, errors
Parses sitemap.xml (and any chained sitemap indexes), counts URLs, checks last-modified dates, and flags 404s + redirects in the sample.
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Page Weight Breakdown
JS + CSS + images + fonts, broken out
Fetch any page and see exactly what makes up the total transfer size. Find the 2 MB JS bundle that's tanking your Core Web Vitals.
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WCAG Quick Check
Nine WCAG 2.2 checks, in seconds
Nine structural WCAG 2.2 checks — lang, title, image alt text, heading order, form labels, link text, viewport zoom, skip-links, button names. Catches the highest-frequency failures.
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AI Brand Visibility Probe
Does Claude name your brand?
Ask Claude one category-best question about your industry and we parse the answer for whether your brand appeared, where you ranked, sentiment, and which competitors got named instead.
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Want the full picture?
Run a free Nova Insight audit
Six-pillar deep-dive across Performance, Security, SEO, AI Visibility, Conversion & UX and Accessibility. PDF report with prioritised fixes, in your inbox in minutes.