Website Checkers100% Free18 tools

Free Website Tools: Test, Check and Track Your Site

These free website tools help you test how your site behaves, from redirects and headers to meta tags, page weight and server status. Each tool runs from our own server, needs no signup and uses no outside service or paid API.

Website tracking

Redirect CheckerTrace every redirect hop of a URL, with status codes, loops and timing.

HTTP and server

HTTP Status Code CheckerCheck the status code of up to 20 URLs at once. Get HTTP HeadersView all response headers of a URL and review the security headers. Server Status CheckerCheck if a website is up and see timings and SSL expiry. Page Size CheckerMeasure total page weight and find the largest files.

SEO and meta

Meta Tags AnalyzerRead and check the title, description, canonical and other meta tags. Open Graph CheckerTest og: and Twitter Card tags and the share image of a page. Keyword Density CheckerFind the most used words and phrases in your text, with percentages. FAQ Schema GeneratorTurn questions and answers into valid FAQPage JSON-LD. JSON to JSON SchemaGenerate a JSON Schema from sample JSON data.

Website detection

WordPress Theme DetectorFind the theme, version and visible plugins of a WordPress site.

Browser and screen

What Is My BrowserSee your browser, version, system, language and settings. What Is My User AgentSee your full user agent string and what each part means. What Is My Screen ResolutionSee your screen size, window size and pixel ratio, live. Screen Resolution SimulatorPreview a website at phone, tablet, laptop and desktop sizes. URL OpenerOpen a list of links in separate tabs with one click.

Calculators and validators

Credit Card ValidatorCheck a card number with the Luhn test and find the brand. AdSense CalculatorEstimate daily, monthly and yearly ad earnings from your traffic.

How These Website Tools Work

Each tool sends a real request from our server to the address you enter and shows exactly what came back, with no cached or estimated data. Nothing you enter is stored.

To keep the service fast for everyone, each visitor can run a limited number of checks per minute. Results show the view from our server, not from your own connection.

More Tools Will Follow

This collection keeps growing. Meanwhile you can use our DNS tools to inspect domain records and our IP tools to look up, convert and test IP addresses.

Standards: RFC 9110, the HTTP semantics specification.