# Free SEO tools

> Atrby offers 29 free SEO and AI-SEO tools for robots.txt, llms.txt, UTM links, sitemaps, meta tags and redirects, with no account required.

Canonical: https://atrby.site/tools
Last updated: 2026-10-26

Free SEO and AI-SEO tools, built by the team behind Atrby. Check how ChatGPT, Perplexity and Google see your site, and generate robots.txt, llms.txt and UTM links in seconds. No sign-up is needed.

## AI crawlers

- [llms.txt generator](https://atrby.site/tools/llms-generator): Write a starter llms.txt with your name, a summary and your docs link.
- [robots.txt generator](https://atrby.site/tools/robots-generator): Presets to allow answer bots and block training crawlers.
- [AI crawler access report](https://atrby.site/tools/ai-crawler-access): See which AI bots your robots.txt lets in today.
- [llms.txt checker](https://atrby.site/tools/llms-checker): Score an existing llms.txt and fix broken links.
- [robots.txt tester](https://atrby.site/tools/robots-tester): Test any path against any crawler's rules.
- [ai.txt helper](https://atrby.site/tools/ai-txt): Write an ai.txt saying which files AI training may use.

## On-page

- [Meta tag checker](https://atrby.site/tools/meta-length): Check your title and description fit what search results show.
- [Open Graph preview](https://atrby.site/tools/og-preview): See your link card on X, LinkedIn, Slack and iMessage.
- [JSON-LD syntax checker](https://atrby.site/tools/jsonld-validator): Check that your JSON-LD parses before you ship it.
- [SERP snippet preview](https://atrby.site/tools/serp-preview): Preview how a page appears in Google results.
- [Keyword density](https://atrby.site/tools/keyword-density): Paste your copy and see the words you use most.
- [Internal link checker](https://atrby.site/tools/internal-links): List a page's internal links and flag weak anchor text.
- [Compare two pages](https://atrby.site/tools/page-diff): Diff meta tags and schema between two URLs.
- [Favicon checker](https://atrby.site/tools/favicon-checker): Check favicons and touch icons on every platform.
- [OG image size guide](https://atrby.site/tools/og-image-guide): Exact sizes per platform, with a crop preview.
- [Markdown to meta tags](https://atrby.site/tools/md-meta): Turn front matter into ready-to-paste tags.

## Technical

- [XML sitemap generator](https://atrby.site/tools/sitemap-generator): Crawl up to 25 pages or paste URLs, then download a sitemap.
- [Sitemap validator](https://atrby.site/tools/sitemap-extractor): List every URL in a sitemap and spot-check the first 20.
- [Canonical and hreflang checker](https://atrby.site/tools/canonical-hreflang): Catch duplicate and wrong-language pages.
- [Redirect chain checker](https://atrby.site/tools/redirect-checker): Follow every hop and spot loops and slow chains.
- [Broken link checker](https://atrby.site/tools/broken-link): Find dead and redirected links on a page.
- [Security headers](https://atrby.site/tools/security-headers): Grade CSP, HSTS and friends in one glance.
- [Status code checker](https://atrby.site/tools/bulk-status): Check up to 30 URLs at once.
- [HTTPS redirect checker](https://atrby.site/tools/ssl-checker): Make sure every version lands on HTTPS.
- [WWW and DNS check](https://atrby.site/tools/dns-www): One canonical host, correctly configured.

## Campaigns

- [UTM link builder](https://atrby.site/tools/utm-builder): Build tagged links your analytics will read correctly.
- [UTM decoder](https://atrby.site/tools/utm-decoder): Paste a messy link, see every campaign parameter.

## Privacy

- [Analytics snippet generator](https://atrby.site/tools/snippet-generator): A privacy-friendly tracking snippet for any stack.
- [Cookie banner explainer](https://atrby.site/tools/consent-explainer): When cookieless analytics needs a banner, and when not.

## Related
- [Atrby](https://atrby.site/)
- [Pricing](https://atrby.site/pricing)
- [Live demo](https://atrby.site/demo)