52 Free SEO Tools
Instantly check meta tags, Core Web Vitals, security, images, and more. No account needed, no hidden costs.
📝 On-Page SEO 11 tools
Meta Title Checker
Check if your page's meta title meets Google standards.
Meta Description Checker
Analyze your meta description and get optimization recommendations.
Heading Tags Checker
Check H1-H6 hierarchy and heading structure.
OpenGraph Tags Checker
Check OG and Twitter Card tags for social sharing.
Canonical Tag Checker
Verify if the canonical tag is present and correctly configured.
Noindex Tag Checker
Check if your page is blocked from indexing via noindex.
Nofollow Tag Checker
Check if your page uses page-level nofollow.
Structured Data Checker
Detect and validate JSON-LD, Microdata, and RDFa.
Image Alt Text Checker
Find all images on the page missing alt attributes.
Google SERP Preview
See how your page will appear in Google search results.
Keywords Cloud
Analyze keyword frequency on any page.
🔧 Technical SEO 12 tools
Robots.txt Checker
Analyze the robots.txt file and crawl rules.
XML Sitemap Checker
Check if sitemap.xml exists, is valid, and accessible.
HTTP Status Checker
Check the HTTP status code of any URL.
URL Redirect Checker
Trace redirect chains and detect loops.
URL Canonicalization Checker
Check www vs non-www consistency and trailing slash.
Charset Declaration Checker
Check charset declaration and character encoding.
Broken Links Analysis
Scan the page and detect links leading to errors.
Favicon Checker
Check the presence and accessibility of the favicon.
404 Page Checker
Check if the site returns a custom 404 page.
Ads.txt Checker
Check the existence and format of the ads.txt file.
Text to HTML Ratio Checker
Calculate the ratio between visible text and HTML code.
Meta Refresh Checker
Detect meta refresh tags that can affect SEO.
⚡ Performance & Core Web Vitals 12 tools
Page Speed Test
Test your page speed on mobile and desktop.
LCP Test
Measure Largest Contentful Paint - the primary Core Web Vitals metric.
CLS Test
Measure Cumulative Layout Shift - page visual stability.
FCP Test
Measure First Contentful Paint - the first visible content.
TTFB Test
Measure Time to First Byte - server response speed.
HTML Page Size Test
Measure the total size of the HTML document.
GZIP/Brotli Compression Test
Check if the server uses GZIP or Brotli compression.
DOM Size Test
Check the number of elements in the page's DOM.
Render-Blocking Resources Test
Detect CSS and JS that block page rendering.
JS Execution Time Test
Measure JavaScript execution time on the page.
JS Minification Checker
Check if JavaScript files are minified.
CSS Minification Checker
Check if CSS files are minified.
🖼️ Images 5 tools
Modern Image Format Test
Check if images use modern formats (WebP, AVIF).
Image Cache Checker
Check cache policies for page images.
Responsive Images Checker
Check if images are optimized for different resolutions.
Image Aspect Ratio Checker
Check if images have explicit dimensions to prevent CLS.
Image Metadata Checker
Analyze overall image optimization on the page.
🔒 Security 7 tools
SSL & HTTPS Checker
Check SSL certificate and HTTPS configuration.
Mixed Content Test
Detect HTTP resources loaded on HTTPS pages.
HTTP/2 Protocol Check
Check if the server supports the HTTP/2 protocol.
HSTS Check
Check the Strict-Transport-Security header.
Plaintext Email Checker
Detect email addresses exposed in the source code.
Unsafe External Links Checker
Detects target=_blank links without rel=noopener.
SPF Records Checker
Check SPF configuration for your domain.
📱 Mobile 3 tools
📊 Analytics 2 tools
Why use our free SEO tools?
Our set of technical and on-page SEO analysis tools was designed to provide fast and transparent access to vital information about your website's health. From loading speed and performance according to Core Web Vitals, to the correct implementation of structured data (Schema.org), security (SSL/HTTPS) and meta tags, these 52 mini-apps scan web pages in real-time.
Whether you're a business owner, web developer or marketing specialist, you have a complete suite at your disposal for a preliminary audit, without creating an account and without hidden restrictions.
Frequently Asked Questions (FAQ)
Are these tools really free?
Yes. All 52 tools are 100% free for occasional, manual use, with no limit per user. We have set certain limitations strictly at the IP level (rate limits) to prevent bot abuse and automated scraping.
How do the technical tools work?
For page speed analysis and Core Web Vitals, we directly query the Google PageSpeed Insights API. For on-page elements and link architecture, our servers simulate a visit from a search bot (crawl) to extract the exact source code returned, just as Googlebot sees it.
Why did my analysis return errors?
Many websites block robot access (via firewall rules, Cloudflare WAF, etc.). If a tool returns an error, it's highly likely that your server prohibits automated access from our platform. Try entering the URL again ensuring it starts with https:// or contact us for a dedicated audit solution.