Free tools
Free SEO tools that don't need a sign-in
Small interactive helpers, free to use. Most run entirely in your browser, so no sign-in and no quota spent. One connects to your own Search Console for real index status.
Start here
Is your site showing up on Google?
Paste your domain for an instant read on whether Google can crawl and index you, and what's in the way.
Check free, no sign-in →Runs the Index & AI Health ScanCan ChatGPT find your website?
Check whether AI assistants can reach your pages at all, and whether they'd quote you if they could.
Check free, no sign-in →Runs the AI extractability scoreIs something blocking the AI crawlers?
See which AI crawlers your robots.txt lets in, and which ones you're turning away without knowing it.
Check free, no sign-in →Runs the AI crawler access checkerPrefer the technical names? Everything below is the full suite. The SEO Guide walks each area and points you at the right tool.
On your own Search Console
AI search & discoverability
IndexNow checker
Enter your domain and IndexNow key. We check the key file is hosted right: reachable, plain-text, an exact match, so Bing, Yandex, Seznam, and Naver accept your submissions.
Discoverability Score
A 0–100 score for how findable your site is across Google and AI search: robots.txt, llms.txt, structured data, sitemap, canonical, Open Graph, HTTPS.
AI extractability score
Paste a page URL and get a 0–100 score for whether AI engines can lift a clean, attributable answer from it: answer placement, quotable sentences, dated claims, brand adjacency, structure. Then the edits that close the gap.
AI citation & brand mention checker
Enter your domain and brand. We ask an AI model which sources it would cite for real queries and look for you in the answer, then scan your homepage for the off-site brand signals (YouTube, social profiles) that Ahrefs finds track closest with AI visibility.
AI Crawler Access Checker
Paste your domain. We read its robots.txt and name which AI crawlers get through and which hit a wall: GPTBot, ClaudeBot, PerplexityBot, Google-Extended, CCBot, Bytespider, and the rest.
llms.txt validator
Paste or fetch an llms.txt and lint its structure, sections, and links, the things LLMs lean on for clean citations.
User-Agent lookup
Paste a User-Agent string and identify AI crawlers, search bots, SEO tools, and browsers behind it.
SEO inspectors
Indexability checker
Paste any URL. We fetch it live and run every signal Google uses to decide whether a page can be indexed: HTTP status, redirects, X-Robots-Tag header, meta robots, canonical, robots.txt. Then one plain-English verdict.
Canonical & meta finder
Paste a page's HTML. We pull out the canonical URL, robots meta, title, description, hreflang, Open Graph, and JSON-LD types, then flag the indexability bugs.
Domain Rating checker
Type any domain to see its Ahrefs Domain Rating, a 0–100 score of backlink-profile strength against the rest of the web, on a logarithmic scale. Free, no API key. Data: Domain Rating by Ahrefs.
Schema markup inspector
Fetch a URL and pull every JSON-LD and microdata Schema.org block out of it. We check the required fields and flag which types qualify for Google rich results.
Schema markup generator
Pick a type (Organization, WebSite, Article, Product, FAQ, Breadcrumb, LocalBusiness), fill a form, and get copy-paste JSON-LD with live required-field validation.
SERP snippet preview
Preview how your title and description render on Google desktop and mobile, with pixel-accurate truncation.
Open Graph preview
See how a URL renders when shared on Facebook, LinkedIn, Slack, and X, and which tags are missing.
Redirect chain checker
Follow every HTTP redirect hop for a URL and surface long chains and HTTPS downgrades.
Hreflang tester
Validate hreflang annotations, x-default, self-reference, and that every alternate reciprocates.
Robots, crawl & lists
Robots.txt tester
Paste a robots.txt plus a URL and User-Agent, and we'll tell you which rule matches and whether it's allowed.
Sitemap diff
Compare two sitemaps or URL lists (added, removed, unchanged) and copy the added set.
URL list cleaner
Paste a messy list of URLs and get back a deduped, normalized, validated, sorted list ready to submit.
Planning
Credit calculator
Tell us how many URLs over how many days, and we'll work out the free pushes, the packs needed, and the bottom line.
Indexing time estimator
Answer a few questions about your site (age, authority, how you submit, content type) and get a realistic window for how long Google takes to index a new page, plus the levers that speed it up.
Google API quota calculator
Map your daily URL volume against Google's Indexing API (200/day) and URL Inspection (2,000/day) limits. See how many service accounts a DIY setup would need, and where IndexerNow's free tiers and credits land.