Free Online SEO Tools

Query A, AAAA, CNAME, MX, NS, TXT, and SOA DNS records for any domain.

Discover geolocation and network details for any IP address.

Inspect all details of an SSL certificate, including issuer, validity, and signature.

Retrieve ownership details, registration dates, and registrar info for any domain.

Check if a website is currently online and measure its response time.

Strip HTML code and extract clean, readable text from any webpage.

Measure server responsiveness by calculating the time to first byte.

Calculate the total download size of a webpage, including all assets like images and scripts.

Inspect and verify the title tags, meta descriptions, and open graph tags of any website.

Identify the hosting provider or data center behind any website.

View all HTTP headers returned by a URL for debugging and security analysis.

Verify if a website is running on the modern, faster HTTP/2 network protocol.

Find out if your URL is stored in Google's cache and when it was last indexed.

Follow the chain of 301 and 302 redirects to see the full path a URL takes.

Discover which domains are hosted on the same server as a given IP address.

Check if a website uses Brotli compression for better data transfer speeds than Gzip.

Measure the ratio of visible text to HTML code for SEO relevance.

Check if a webpage is unintentionally blocked from appearing in search results.

Scan your webpage to find images missing critical alt text for accessibility and image SEO.

Identify deprecated HTML elements that should be replaced with modern CSS or semantic HTML5.

Check if the HTTP Strict Transport Security header is correctly configured.

Verify if your server exposes software version details in HTTP response headers.

Ensure your website has a properly declared favicon that shows up in browser tabs and search results.

Check a URL against Google's Safe Browsing list to see if it contains malware or phishing threats.

Analyze which images on a page use lazy loading to defer off-screen resources.

Preview and optimize your website's title, URL, and meta description as they appear in Google search results.

Preview how your page title and description appear in Bing's search engine results.

Preview your web page appearance in Yandex search results for the Russian-speaking market.

Validate Open Graph and Twitter Card tags to control how your content looks when shared.

Compress your HTML code by stripping whitespace, comments, and redundant attributes.

Shrink your stylesheets by removing unnecessary spaces, line breaks, and comments.

Obfuscate and compress JavaScript to reduce file sizes and improve script execution speed.