Free Tools

Website Tools

Check the live status, HTTP headers, and technical health of any website.

23 tools in this category

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SSL Tools 3 DNS Tools 13 Domain Tools 12 Website Tools 23 Security Tools 14 Email Tools 9 Performance Tools 12 SEO Tools 14 API & Developer Testing Tools 15 Git & GitHub Tools 18 DevOps Tools 16 Linux & System Administration Tools 17 Database & SQL Tools 20 AWS & Cloud Tools 16 Kubernetes Tools 14 Programming Language Tools 22 Frontend / CSS Tools 20 Image / SVG Developer Tools 18 Security & Authentication Tools 14 File & Data Conversion Tools 20 Data / Number / Computer Science Tools 20

Run All Website Tools Checks

Website Status Checker

Instantly check any website's uptime status, HTTP status code, and response time.

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IP Address Lookup

Look up a website's server IP address, IPv4/IPv6, and reverse DNS.

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HTTP Status Checker

Check the HTTP status code any website returns.

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HTTP Headers Checker

View every HTTP response header a website sends.

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Redirect Checker

Check whether a website redirects and where it ends up.

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Website Response Time Checker

Check how fast a website responds to a request.

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Robots.txt Checker

Check whether a website has a robots.txt file and view its contents.

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Sitemap Checker

Check whether a website has an XML sitemap.

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Favicon Checker

Check whether a website has a favicon set up correctly and see exactly where it's loading...

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Website Technology Checker

Detect the CMS, JavaScript framework, analytics tools, and server technology a website use...

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HTML Validator

Check a webpage's HTML for structural errors, missing tags, and accessibility issues.

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CSS Validator

Check a webpage's CSS (inline and linked stylesheets) for common syntax issues.

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JSON Formatter

Instantly format and pretty-print any JSON, right in your browser.

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JSON Validator

Instantly check whether your JSON is valid, right in your browser.

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JSON Minifier

Instantly minify JSON by removing whitespace, right in your browser.

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URL Encoder / Decoder

Instantly encode or decode URLs and query strings, right in your browser.

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Base64 Encoder / Decoder

Instantly encode or decode Base64 text, right in your browser.

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Unix Timestamp Converter

Instantly convert Unix timestamps to human-readable dates, and back, right in your browser...

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Broken Link Checker

Check a page for broken outbound links.

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Website Charset Checker

Check a website's declared character encoding (charset) - HTTP header and HTML meta tag.

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HTML Minifier

Instantly minify HTML by removing unnecessary whitespace and comments, right in your brows...

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JavaScript Minifier

Instantly compact JavaScript by removing unnecessary whitespace, right in your browser.

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URL Parser

Instantly break a URL down into its protocol, host, path, query parameters, and fragment,...

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