SEO Tools
Optimize your website for search engines with our comprehensive SEO toolkit.
All SEO Tools
Showing 13 tools
SEO Checker
Run a full live SEO audit of any URL: overall score plus an AI-search (AEO/GEO) score, metadata, technical, speed (Core Web Vitals), security & structured-data checks, and a point-by-point improvement roadmap.
Open ToolWebsite Speed Test
Test your website's speed on mobile & desktop: real Google Lighthouse scores, real-user Core Web Vitals (LCP, INP, CLS), TTFB & server checks, loading filmstrip, page-weight breakdown, and prioritized fixes.
Open ToolSite Audit
Crawl your whole website for a per-page SEO audit: missing or duplicate titles & meta descriptions, missing H1s, broken links, noindex pages, redirect chains, thin content and images without alt text. A free on-page site crawler.
Open ToolMeta Tag Validator
Validate, fix & generate meta tags in one place: live-page audit, pixel-accurate desktop & mobile SERP previews, meta-readiness score, and export as HTML, Next.js or React Helmet.
Open ToolOpen Graph Validator
Validate & preview Open Graph and Twitter/X card tags for Facebook, LinkedIn, X, Slack & more, from a live URL or by hand.
Open ToolSchema Validator
Validate & generate JSON-LD structured data, audit any URL's schema against Google Rich-Results rules, edit it live, or build new markup for 15+ types with a readiness score.
Open ToolSitemap Validator
Validate, build & fix XML sitemaps, fetch any sitemap or crawl your site, edit URLs live with health checks, and export a compliant sitemap.xml.
Open ToolSERP Snippet Preview
Preview your page in Google on desktop & mobile with pixel-accurate truncation, keyword bolding and rich-result simulation.
Open ToolKeyword Density Checker
Analyze keyword frequency and density in your content.
Open ToolSEO Content Analyzer
Get a complete on-page audit with weighted score, keyword analysis & optimization tips.
Open ToolReadability Checker
Analyze readability across six formulas with grade level & suggestions.
Open ToolRobots.txt Generator
Audit, build and test robots.txt, fetch any site's file, control AI & search crawler access, and path-test rules like Google does.
Open Tool.htaccess Generator
Generate Apache, Nginx & Caddy rules for redirects, security & compression.
Open ToolAbout ToolsMonk's SEO Tools
These tools answer the questions that come up when a page is not performing in search: is anything technically broken, is it slow, and does it describe itself the way a search engine or an AI answer engine expects. The SEO Checker audits a live URL in one pass, the Website Speed Test reports Core Web Vitals from real Lighthouse runs, and Site Audit crawls a whole site for broken links, missing titles and duplicate pages.
The other half is fixing what the audit finds. The Meta Tag Validator and the SERP Snippet Preview show how a title and description will actually appear in results, the Schema Validator builds and checks structured data, and the Robots.txt Generator, Sitemap Validator and .htaccess Generator cover the files that control how a site is crawled. Keyword Density and the Readability Checker look at the copy itself.
Most of these tools run entirely in your browser, so files and text stay on your device. SEO Checker, Website Speed Test, Site Audit, Sitemap Validator, and Robots.txt Generator use a server for part of their work, and where your files are processed explains exactly what is sent and why.
SEO Tools Guides
Practical how-tos from the ToolsMonk blog that use the tools in this category.
Complete SEO Audit Checklist: 50+ Points to Review for Maximum Rankings
Conducting a thorough SEO audit reveals exactly what's holding your website back from ranking higher. Use this 50+ point checklist covering on-page, off-page, technical, and content SEO to identify and fix every issue systematically.
Read the guide10 Essential SEO Tools Every Website Owner Needs in 2026
Search engine optimization remains the backbone of online visibility. Discover the must-have SEO tools, from keyword research to backlink analysis, that will help you optimize your website, outrank competitors, and drive organic traffic consistently.
Read the guideThe Ultimate Technical SEO Checklist for 2026: Fix What's Holding Your Site Back
Technical SEO issues silently kill your rankings. Use this comprehensive checklist to audit your website's crawlability, indexability, speed, mobile-friendliness, and security, with free ToolsMonk tools to fix every issue.
Read the guideKeyword Research Made Simple: A Complete Beginner's Guide for 2026
Keyword research is the foundation of every successful SEO strategy. Learn how to find profitable keywords your audience is actually searching for, analyze competition, and build a content plan that drives targeted organic traffic to your site.
Read the guideOn-Page SEO Best Practices: How to Optimize Every Element for Higher Rankings
On-page SEO is the optimization you have complete control over. Master every element, from title tags and headings to internal linking and content structure, to give each page the best possible chance to rank on page one.
Read the guideYour Next.js Page Ships Its Data Twice: Measuring the RSC Payload
One of our pages answered 2,318,515 bytes and 82.7% of that was props serialized into the HTML, not content. Here is how Client Component props get shipped twice, the projection that cut the page by 76%, and the measuring mistake that first told us everything was fine.
Read the guideSEO Tools FAQs
Common questions about seo tools, the tools available in this category, and how to choose the right workflow.