Free Technical SEO Tools

Crawling, indexing, redirects, sitemaps and robots.txt. 24 free tools, no sign-up.

Website SEO Audit Audit any page for free: 35+ technical and on-page SEO checks with clear evidence, a prioritised fix list and exportable reports. Live check Website Crawler Crawl up to 100 pages of your site online and see status codes, titles, canonicals, noindex tags, depth and broken internal links in one table. Live check Broken Link Checker Paste a URL to find broken links on that page: 404s, server errors, redirects and unreachable links, each listed with its anchor text. Live check Bulk HTTP Status Code Checker Paste up to 50 URLs and get each HTTP status code, redirect chain, final URL and response time in one sortable, exportable table. Live check Redirect Checker Enter a URL to trace each redirect hop with its status code and timing, catch loops and long chains, and see the final response headers. Live check HTTPS, WWW & Trailing Slash Checker See whether every http, https, www and non-www version of your domain, with or without a trailing slash, redirects with one 301 to a single URL. Live check Canonical Tag Checker Check a page's rel=canonical in HTML and HTTP headers and find missing, duplicate or conflicting canonicals before they confuse search engines. Live check Indexability Checker Check every on-site signal that decides whether Google can index a page and get one plain verdict: indexable, or exactly what is blocking it. Live check Meta Robots & X-Robots-Tag Checker Reveal all robots directives for a page, from meta tags to the X-Robots-Tag header, with plain-English notes on what each directive does. Live check robots.txt Tester Fetch or paste a robots.txt file and test whether Googlebot, Bingbot, an AI crawler or any user-agent may crawl a specific URL. Live check robots.txt Generator Build a clean robots.txt with sitemap lines, folder rules, allow exceptions and optional AI-crawler blocks, then copy or download it. In your browser XML Sitemap Validator Validate any XML sitemap or sitemap index for structure, limits, duplicates and date errors, then browse child sitemaps and export every URL. Live check XML Sitemap Generator Paste your URLs and download a valid sitemap.xml with duplicates removed, characters escaped and optional lastmod dates. In your browser Orphan Page Finder Compare your sitemap with a live crawl to spot orphan pages that no internal link reaches, and indexable pages missing from your sitemap. Live check Crawl Depth Checker Crawl from your homepage and see how many clicks it takes to reach every page, with a depth chart and a list of the deepest URLs. Live check Duplicate Title & Meta Description Checker Crawl your site to group pages that share the same title, meta description or body text, and list pages missing a title, description or H1. Live check Internal Link Analyzer Crawl your site to count internal links pointing at each page, see the anchor text used, and find under-linked pages that deserve more. Live check Soft 404 Checker Test whether your site returns a proper 404 for missing pages, or a soft 404 that serves an error page with a 200 status or redirects home. Live check Mixed Content Checker Scan an HTTPS page for resources still loaded over insecure http://, with active and passive mixed content listed separately. Live check Security Headers Checker Check which HTTP security headers your site sends, get a grade, and see which missing or leaky headers to fix first. Live check Mobile-Friendly Checker Check a page's HTML for the signals that make it work well on phones, from the viewport tag to responsive images and tap targets. Live check URL Parameter Analyzer Paste URLs from a crawl, log or Search Console export and see every query parameter grouped by name, with counts and duplicate-URL risks. In your browser .htaccess & Nginx Redirect Generator Turn old-to-new URL pairs into 301 redirect rules for .htaccess, Nginx, Cloudflare or PHP, with ready-made HTTPS and www rules. In your browser Redirect Mapping Tool (Site Migration) Automatically match old URLs to new ones by slug and path similarity, review each match's confidence, and export a ready redirect map. In your browser

About technical seo tools

Technical SEO is the plumbing behind your rankings: whether search engines can crawl your pages, whether those pages can be indexed, and whether every URL resolves cleanly to one canonical version. The tools here cover a full site audit, a small-site crawler, redirect and status code checks, robots.txt and sitemap testing, canonical and robots directive checks, plus generators for redirect rules and migration maps.

Not sure where to begin? Run the free website SEO audit on your homepage or a key landing page first. If it flags crawling or indexing problems, use the indexability checker or robots.txt tester to pin down the cause. For site-wide issues such as broken links, orphan pages or duplicate titles, use the crawler-based tools. Planning a migration? The redirect mapping tool and .htaccess generator are where to start.

Frequently asked questions

What is technical SEO and how is it different from on-page SEO?

Technical SEO covers how search engines discover, crawl, render and index your site: status codes, redirects, robots.txt, sitemaps, canonicals, HTTPS and site architecture. On-page SEO focuses on what is on each page, such as titles, headings and content. Both matter, but if a page cannot be crawled or indexed, no amount of on-page work will get it into search results.

Which technical SEO check should I run first?

Start with a full page audit of your most important URL, because it covers status, redirects, robots rules, canonical, sitemap, headings, security headers and more in one pass. Then follow up on whatever it flags. For example, if a page is not indexed, run the indexability checker; if you see many 404s, run the broken link checker or crawler.

Do these tools replace Google Search Console?

No. These tools check what your site serves right now from the outside, which is useful for diagnosing problems quickly. Google Search Console shows how Google itself has crawled and indexed your site over time, including coverage reports and real search data. Use both together: Search Console to spot problems, and these tools to investigate and confirm fixes.