SEO & Webmaster Toolbox
A comprehensive suite of fast, accurate, and free web utilities to audit, analyze, and optimize your web projects.
SSL Lookup
Check SSL/TLS certificate validity, expiration dates, issuing authority, and cryptographic signature strength.
Whois Lookup
Get comprehensive domain registration info, registrar details, domain age, and authoritative nameservers.
Website text extractor
Extract raw visible text from webpage HTML code with word counts and reading time metrics.
Website page size checker
Check the total size of a web page, including all resources, for performance analysis.
Website hosting checker
Instantly detect the hosting company, ASN, datacenter, and server location of any website.
HTTP headers lookup
Inspect and analyze all HTTP response headers, security policies (CSP, HSTS), and status codes returned by any web server.
URL redirect checker
Check for 301 & 302 redirects of a specific URL. It will check for up to 10 redirects.
Text to HTML ratio checker
Analyze the ratio of text content to HTML code for SEO and performance optimization.
Noindex checker
Checks if a webpage is set to noindex, preventing it from appearing in search engines.
Robots.txt checker
Check if a website has a robots.txt file and review its sitemap and disallow rules.
Schema markup checker
Find JSON-LD schema markup on a webpage and check whether its JSON can be parsed.
Deprecated HTML tags checker
Detects outdated HTML tags that should be replaced with modern alternatives.
Server signature checker
Check if your server signature is present in your website's header response.
Favicon checker
Check if a website has a valid favicon and if it is correctly linked in the HTML.
Lazy loading images checker
Check if images on a webpage have the lazy loading attribute enabled for performance optimization.
Server compression checker
Check if a website response uses gzip, Brotli, or another compression algorithm.
Doctype checker
Verify if a webpage contains a valid HTML5 doctype declaration to ensure standard rendering across browsers.
Referrer policy checker
Check if a website returns a Referrer-Policy header and display its value.
Google search preview
Enter your website URL and you will get an instant preview of how it would look when finding it on Google.
Bing search preview
Enter your website URL and you will get an instant preview of how it would look when finding it on Bing.
Yandex search preview
Enter your website URL and you will get an instant preview of how it would look when finding it on Yandex.
Yahoo search preview
Enter your website URL and you will get an instant preview of how it would look when finding it on Yahoo.
OpenGraph checker
Enter your website URL to preview how your pages appear when shared on social media platforms like Facebook and X (Twitter).
HTML minifier
Minify your HTML by removing unnecessary characters, whitespace, and comments to accelerate page speed.
CSS minifier
Minify your CSS stylesheets by stripping unnecessary whitespace and comments for optimal performance.
JS minifier
Minify and optimize JavaScript source code to speed up script execution and page rendering.
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