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Audit, crawl, speed-test, and secure your website with 30+ free technical SEO tools. Generate robots.txt, XML sitemaps, check Google index, measure performance, and debug like a pro. No signup, no fees — just actionable data.
Control how search engines access and index your site. Generate robots.txt, XML sitemaps, check Google index status, and simulate search engine crawlers. Browse all crawling & indexing →
Generate a properly formatted robots.txt file to control search engine crawling and indexing of your website.
Open ToolCreate XML sitemaps for your website to help search engines discover and index all your important pages.
Open ToolCheck how many pages of your site are indexed in Google and identify indexing issues at a glance.
Open ToolView the cached version of any webpage as stored by Google, useful for troubleshooting recent changes.
Open ToolSimulate how a search engine spider sees your page, revealing hidden content, meta info, and crawl issues.
Open ToolCalculate the ratio of visible text to HTML code; a higher text ratio can positively influence rankings.
Open ToolManage URL structures, permanent/temporary redirects, and encode/decode URLs for clean, crawlable addresses. Browse all url & redirects →
Generate .htaccess redirect rules (301, 302) to implement URL redirects without touching server configuration manually.
Open ToolRewrite dynamic URLs into static, SEO‑friendly formats using mod_rewrite rules for better crawling and user experience.
Open ToolVerify if your site correctly redirects from non‑www to www (or vice‑versa) to avoid duplicate content issues.
Open ToolEncode or decode special characters in URLs to ensure they are valid, safe, and properly interpreted by browsers and crawlers.
Open ToolAnalyze page speed, size, and visual rendering. Speed is a ranking factor – make sure your site loads fast on all devices. Browse all site performance & speed →
Test your website’s load time and get actionable recommendations to improve speed and Core Web Vitals.
Open ToolFetch Google PageSpeed Insights scores (mobile & desktop) and see exactly what to fix for better performance.
Open ToolCalculate the total size of a webpage (HTML, images, scripts) to identify bloat that slows down loading.
Open ToolCapture a full‑page screenshot of any website to see how it renders and spot layout issues quickly.
Open ToolPreview your website at different screen resolutions to ensure responsive design and mobile‑friendliness.
Open ToolInvestigate domain ownership, DNS records, IP details, hosting information, and server status for a solid technical foundation. Browse all domain & dns lookup →
Convert a domain name to its IP address and discover the server location and hosting provider.
Open ToolIdentify the web hosting company and name servers associated with any domain.
Open ToolCheck if multiple domains share the same Class C IP range, useful for identifying potential PBNs or bad neighbourhoods.
Open ToolLookup all DNS records (A, MX, CNAME, TXT, NS) for a domain to troubleshoot delivery and configuration issues.
Open ToolRetrieve domain registration details: owner, registrar, creation/expiration dates, and contact information.
Open ToolFind out how old a domain is; domain age can be a trust signal for search engines.
Open ToolCheck if a website or server is online and responding, with HTTP status code returned.
Open ToolPing a server or website to measure response time and packet loss – a basic network health check.
Open ToolDisplay your current public IP address, ISP, and location – helpful for firewall and DNS setup.
Open ToolCheck your site for malware, blacklisting, and suspicious signals that can harm rankings and user trust. Browse all security & blacklist →
Scan your website using Google Safe Browsing data to see if it’s flagged for malware or phishing.
Open ToolCheck if your domain or IP is listed on major email and security blacklists that can affect SEO and deliverability.
Open ToolAnalyse a domain for spammy behaviour, malware association, or other red flags that may indicate a risky site.
Open ToolGenerate and audit meta tags, analyse internal link counts, and view raw source code for technical on‑page insights. Browse all on‑page & meta →
Build complete meta tags (title, description, keywords, robots, etc.) that help search engines understand your page.
Open ToolExtract and evaluate all meta tags from any URL to ensure they are optimised and correctly implemented.
Open ToolCount total internal and external links on a page – valuable for managing link equity and crawl budget.
Open ToolView the full HTML source code of any webpage directly in your browser for debugging and analysis.
Open ToolThe Technical SEO Tools page on FreeToolr is your go‑to command centre for site health. Instead of paying for expensive crawlers or switching between multiple platforms, you get a curated suite of 30+ utilities covering crawling, indexing, performance, DNS, redirects, security, and on‑page technical elements.
We built this collection because technical SEO errors are silent killers. A misconfigured robots.txt can hide your entire site from search engines. Slow page speed drives visitors away and hurts rankings. Duplicate content from www/non‑www confuses crawlers. FreeToolr puts the diagnostic power directly in your hands — free, instant, and with no limits.
SEO professionals use these tools for quick spot checks, developers use them to debug server configurations, and site owners use them to monitor ongoing site health. When technical SEO is done right, everything else — content, links, user experience — performs better.
Technical SEO tools are utilities that help you audit and optimise the non‑content elements of your website. They cover crawling directives (robots.txt, sitemaps), server responses (status codes, redirects), site performance (speed, page size), DNS records, domain health, and security checks — all critical for search engine visibility.
Technical SEO has evolved from simple meta tag manipulation to a complex interplay of JavaScript rendering, Core Web Vitals, structured data, and mobile‑first indexing. Modern SEOs need to understand HTTP headers, DNS resolution, and page rendering — and our tools help demystify these concepts.
Each tool performs server‑side or browser‑side checks: fetching robots.txt, resolving DNS, measuring page load times, analysing response headers, and simulating crawlers. Results are displayed in plain language, making them usable even if you’re not a developer.
If search engines can’t crawl or index your pages, all your content efforts are wasted. Technical SEO ensures your site is accessible, fast, and free of errors that prevent ranking. It’s the foundation upon which all other SEO activities rest.
Immediate diagnostics, no software installation, zero cost, and the ability to check any website — not just your own. Ideal for competitive analysis, client audits, and ongoing site maintenance.
These tools perform point‑in‑time checks; they don’t crawl entire websites. For full‑site audits, you may need a dedicated crawler, but for quick checks and single‑page analysis, our tools are perfect.
We do not store the URLs you test or the reports generated. No login is required. Your data stays private and secure.
Unmatched combination of a large technical SEO toolset, consistent interface, free access, and instant results. Most competitors lock advanced checks behind paywalls. FreeToolr keeps everything open.
As search engines adopt AI and real‑time rendering, technical SEO will become even more crucial. We’ll continue to expand our toolset to cover new signals like INP, page experience, and advanced structured data validation.
Create perfectly formatted robots.txt files to control search engine crawling and avoid duplicate content issues.
Build standard‑compliant sitemaps that help search engines discover all your important pages quickly.
Get Core Web Vitals scores and actionable advice to improve your site’s loading speed on mobile and desktop.
Verify which pages are in Google’s index and identify potential indexing problems in bulk.
Investigate domain ownership, DNS records, and server details to troubleshoot configuration issues.
Test 301/302 redirects and www vs non‑www configurations to prevent duplicate content and link equity loss.
Check for malware, blacklisting, and suspicious signals that can harm rankings and user trust.
Generate and analyse meta tags to ensure your pages communicate correctly with search engines.
Every technical SEO tool is completely free. No trial periods, no credit card, no premium upsells — ever.
Browse the categories or use the search box to find the technical SEO tool you need — robots.txt, page speed, DNS lookup, etc.
For site checks, paste the URL you want to audit. For generators (robots.txt, sitemaps), fill in the required fields and let the tool build the file.
Review the detailed report. Copy the generated code, fix the flagged issues, and re‑test until your site passes with flying colours.
Deep site audits
Debug & deploy
Monitor health
Client reporting
Check visibility
Learn SEO tech
Every technical SEO tool on FreeToolr is completely free — no signups, no limits. If our tools have helped you debug and improve sites, consider supporting us on Ko‑fi. Your help keeps advanced SEO auditing free for everyone.
Support on Ko‑fiEvery contribution, no matter the size, makes a real difference. Thank you for being part of our community.
Explore more than 30 free technical SEO tools for crawling, indexing, speed, DNS, security, and on‑page audits. No signup. No downloads. Completely free.
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