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Free Technical SEO tools

Technical SEO Tools

Keep search engines crawling, indexing and rendering your site cleanly. These free technical SEO tools generate the files and markup that make your site machine-readable.

6 free tools No signup Runs in your browser
Overview

What are Technical SEO Tools?

Technical SEO is the plumbing of organic search: if engines can't crawl, index and understand your pages, none of your content or links matter. The work is detailed — robots rules, sitemaps, structured data, redirects, Core Web Vitals, international tags — and small mistakes have outsized consequences.

The tools here handle the fiddly, error-prone parts for you. Generate valid robots.txt and XML sitemaps, build JSON-LD structured data for rich results, trace redirect chains, check Core Web Vitals, and produce correct hreflang tags for multi-region sites — all without hand-coding syntax that's easy to get wrong.

The toolkit

6 free Technical SEO tools

All free tools

Schema Markup Generator free

Free 17,430 uses

Generate JSON-LD structured data for articles, products, FAQs and more.

Best for Adding JSON-LD for rich results

Pros

  • Five schema types
  • Always-valid JSON-LD

Cons

  • Validate in Google's Rich Results Test

Robots.txt Generator free

Free 9,860 uses

Build a valid robots.txt with allow/disallow rules and sitemap directives.

Best for Creating a correct robots.txt fast

Pros

  • Allow / disallow + sitemap rules
  • Copy-ready output

Cons

  • Test before deploying site-wide

XML Sitemap Generator free

Free 11,210 uses

Create a search-ready XML sitemap for sites up to 500 URLs in seconds.

Best for Small sites without a sitemap plugin

Pros

  • Up to 500 URLs
  • Search-ready XML

Cons

  • Manual re-run when URLs change

Redirect Checker free

Free 14,005 uses

Trace full redirect chains and catch 301/302 loops and broken hops.

Best for Catching redirect chains + loops

Pros

  • Full hop-by-hop trace
  • Flags 301 / 302 issues

Cons

  • One URL at a time

Core Web Vitals Checker free

Free 26,090 uses

Test LCP, INP and CLS for any URL and see what is dragging your scores down.

Best for A quick LCP / INP / CLS read on a URL

Pros

  • Field + lab signals
  • Plain-English fixes

Cons

  • Depends on available CrUX data

Hreflang Tag Generator free

Free 6,310 uses

Produce correct hreflang tags for multi-language and multi-region sites.

Best for Multi-language / region tag sets

Pros

  • Correct hreflang syntax
  • Bulk locale support

Cons

  • You must add return tags on every page
FAQ

Technical SEO tools — questions, answered

Technical SEO is the work that helps search engines crawl, index, render and understand your site — robots.txt, sitemaps, structured data, redirects, page speed and international tags.
They generate correct files and markup for you to add, and diagnose issues to fix. Implementation still happens on your site, and you should validate changes before deploying.
No. Each tool produces copy-ready output with guidance, though adding files like robots.txt or schema to your site may need CMS or developer access.

Want this done for you?

These tools surface the opportunities — our team turns them into a done-for-you growth program. Get a free proposal mapped to your goals.

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  • Free, no-signup tools — forever
  • Built & maintained by senior SEOs
  • A clear plan mapped to your goals