29 tools · no sign-up
Free SEO tools for technical SEO and AI crawlers.
Build markup, check crawler access, preview snippets, and measure Core Web Vitals. Free, no account needed.
Generators
Build files and markup. Runs in your browser.
Schema markup generator
Build JSON-LD for supported page types, with required-field checks, ready to paste into your head.
Meta tag generator
Title, description, robots directives, and canonical in one HTML snippet.
robots.txt generator
Write crawl rules for search and retrieval bots. Training preferences are a separate decision.
Hreflang tag generator
Language and region alternates as HTML, HTTP headers, or XML sitemap markup.
Redirect generator
301 and 302 rules for Apache, Nginx, Next.js, and Vercel, including bulk import.
XML sitemap generator
A valid urlset of canonical URLs with honest lastmod dates. Bulk URL support included.
Disavow file generator
Advanced maintenance for confirmed manual actions. Most sites never need this.
Checkers
Check a live URL and see what came back.
Search preview
See how a title and description truncate in Google results on desktop and mobile. Approximate: Google may rewrite either one.
Core Web Vitals checker
Lab Lighthouse and field Chrome UX Report data from Google PageSpeed Insights.
Content phrase inspector
See which words and phrases your page actually repeats. There is no target percentage.
Domain rating checker
Look up Domain Rating for a host. An Ahrefs metric, not a Google ranking factor.
AI crawler checker
See which AI crawlers can read your URL — ChatGPT, Claude, Perplexity and more. Find fixable blocks before you miss citations. Free, no sign-up.
Schema / Rich Results validator
Validate JSON-LD schema. A Rich Results Test alternative: eligible, ineligible, or not applicable. Free, no sign-up.
Broken link checker
Check every link on one page and see which ones fail. Internal and outbound, status by status. Free, no sign-up.
Redirect chain checker
Follow every hop a URL takes and see the chain, the loops, and the final destination. Free, no sign-up.
Social and search preview
One URL, previewed as Google, Facebook, X, LinkedIn, WhatsApp, and Slack would show it. Free, no sign-up.
robots.txt tester
Does this URL get blocked, for this crawler? Test the real file against a real path. Free, no sign-up.
Sitemap validator
Fetch a sitemap or sitemap index and check every URL entry: the XML, the limits, and where the URLs actually land. Free, no sign-up.
Page speed comparison
Two URLs, the same Lighthouse run each, side by side. Free, no sign-up.
HTTP header inspector
Every response header for a URL, with the security and caching headers explained. Free, no sign-up.
Mixed content checker
Find HTTP resources loaded by an HTTPS page, which browsers block or warn on. Free, no sign-up.
Canonical checker
Read the canonical a page declares, and what it points at. Free, no sign-up.
Structured data extractor
Every JSON-LD entity on a page, nested and readable, with the types and properties as published. Free, no sign-up.
Heading checker
List every H1–H6 on a page in document order, with the H1 count, empty headings, and level jumps shown as observations, not errors. Free, no sign-up.
HTTP status code checker
Check the HTTP status code of up to 10 URLs at once: the final code, every redirect hop with its Location, response time, and the headers that explain it. Free, no sign-up.
Checklists
Step-by-step lists to work through.
AI search
See how AI search engines treat your pages.
Generative search readiness review
Inspect the source signals a retriever can see. No score: actual citations are not measured here.
llms.txt generator
ExperimentalCreate a Markdown overview for tools that support this format. Experimental: it does not improve Google rankings or guarantee AI citations.
Content question planner
Draft the questions your page should answer. Editorial prompts, not engine queries.
Audit your site in one command
Every tool here checks one thing. The audit checks them together and ranks what to fix first. Run it from your terminal, your coding agent or CI.
Every integration# Free, no account: score and top issues, 1 page a day
$ npx crawlwise audit https://your-site.comNode 22+. Nothing to install. Add CRAWLWISE_API_KEY for every fix and its evidence.