# FreeSEOTools.io

> Free SEO tools for keyword research, technical audits, content optimization, and GEO readiness. Built by SEO practitioners at our team.

FreeSEOTools.io offers 80+ free tools across 7 categories: keyword research, technical SEO, content & on-page, backlink & domain analysis, text utilities, developer tools, and GEO/AI search optimization. All client-side tools run entirely in the browser with no data collection. Server-side tools fetch publicly accessible URLs for analysis.

## Free Tools

- [Keyword Density Checker](https://www.freeseotools.io/tools/keyword-density-checker): Analyze keyword frequency in content
- [Website Speed Test](https://www.freeseotools.io/tools/website-speed-test): Lighthouse performance scores and Core Web Vitals
- [Meta Tag Analyzer](https://www.freeseotools.io/tools/meta-tag-analyzer): Extract and analyze title, description, OG tags from any URL
- [SSL Checker](https://www.freeseotools.io/tools/ssl-checker): Verify SSL certificate status and configuration
- [Robots.txt Analyzer](https://www.freeseotools.io/tools/robots-txt-analyzer): Parse and audit robots.txt directives including AI bot access
- [Sitemap Validator](https://www.freeseotools.io/tools/sitemap-validator): Validate XML sitemaps and check URL counts
- [Broken Link Checker](https://www.freeseotools.io/tools/broken-link-checker): Find 404s and dead links on any webpage
- [Core Web Vitals Checker](https://www.freeseotools.io/tools/core-web-vitals-checker): LCP, CLS, FCP, TTFB scores
- [Mobile-Friendly Test](https://www.freeseotools.io/tools/mobile-friendly-test): Mobile Lighthouse scores and tap target analysis
- [Heading Structure Checker](https://www.freeseotools.io/tools/heading-structure-checker): Audit H1-H6 hierarchy for SEO and accessibility
- [Schema Markup Validator](https://www.freeseotools.io/tools/schema-markup-validator): Validate JSON-LD structured data
- [HTTP Header Checker](https://www.freeseotools.io/tools/http-header-checker): Inspect response headers for security and caching
- [GEO Readiness Score](https://www.freeseotools.io/tools/geo-readiness-score): 12-signal audit for AI search engine optimization
- [LLMs.txt Generator](https://www.freeseotools.io/tools/llms-txt-generator): Generate llms.txt files for AI crawler guidance
- [AI Crawlability Checker](https://www.freeseotools.io/tools/ai-crawlability-checker): Check GPTBot, ClaudeBot, PerplexityBot access
- [Robots.txt Generator](https://www.freeseotools.io/tools/robots-txt-generator): Build robots.txt with AI bot directives
- [Hreflang Generator](https://www.freeseotools.io/tools/hreflang-generator): Generate hreflang tags for multilingual sites
- [Title Tag Optimizer](https://www.freeseotools.io/tools/title-tag-optimizer): Score and improve title tags for CTR
- [Meta Tag Generator](https://www.freeseotools.io/tools/meta-tag-generator): Create optimized meta titles and descriptions
- [URL Slug Generator](https://www.freeseotools.io/tools/url-slug-generator): Generate SEO-friendly URL slugs
- [Schema Markup Generator](https://www.freeseotools.io/tools/schema-markup-generator): Create JSON-LD for articles, products, FAQs
- [Google SERP Preview](https://www.freeseotools.io/tools/serp-preview): Preview how pages appear in search results
- [Open Graph Preview](https://www.freeseotools.io/tools/open-graph-preview): Preview social sharing appearance
- [Readability Checker](https://www.freeseotools.io/tools/readability-checker): Flesch-Kincaid readability score
- [Word Counter](https://www.freeseotools.io/tools/word-counter): Count words, characters, sentences, reading time
- [Case Converter](https://www.freeseotools.io/tools/case-converter): Convert between text cases
- [Lorem Ipsum Generator](https://www.freeseotools.io/tools/lorem-ipsum-generator): Generate placeholder text
- [JSON Formatter](https://www.freeseotools.io/tools/json-formatter): Format, validate and minify JSON
- [Base64 Encoder](https://www.freeseotools.io/tools/base64-encoder): Encode/decode Base64
- [URL Encoder](https://www.freeseotools.io/tools/url-encoder): Percent-encode and decode URLs
- [Hash Generator](https://www.freeseotools.io/tools/hash-generator): Generate MD5, SHA-1, SHA-256, SHA-512 hashes
- [Password Generator](https://www.freeseotools.io/tools/password-generator): Generate secure passwords

## Blog

- [Blog](https://www.freeseotools.io/blog): SEO tutorials, guides, and case studies

## Company

- [About](https://www.freeseotools.io/about): About FreeSEOTools.io and our team
- [Pricing](https://www.freeseotools.io/pricing): Free, Pro ($19/mo), Agency ($49/mo) plans
- [Contact](https://www.freeseotools.io/contact): Get a free SEO audit

## Optional

- [llms-full.txt](https://www.freeseotools.io/llms-full.txt)