Webmaster & SEO Tools

HTTP Headers Checker

View the HTTP response headers and status code of any URL, with a security header review.

Domain Age Checker

Find when a domain was registered, how old it is, when it expires and who the registrar is.

Redirect Checker

Trace every redirect hop of a URL with status codes (301, 302, 307, 308) and the final destination.

Is Website Down Checker

Check whether a website is down for everyone or just you, with response time and status.

Website Server & OS Checker

Find out which web server, operating system, CDN and backend technology a website runs on.

GZIP Compression Checker

Test whether a website uses GZIP or Brotli compression and how much it saves.

Robots.txt Checker

Fetch and validate a site's robots.txt and test whether a URL is allowed for a crawler.

XML Sitemap Validator

Validate an XML sitemap or sitemap index and review its URLs, dates and errors.

Website Link Analyzer

List every internal and external link on a page with anchor text and nofollow status.

Broken Link Checker

Scan a web page for broken links and see the status code of every link.

Open Graph Checker

Preview how a URL looks when shared on Facebook, X, LinkedIn and more, and check its meta tags.

AMP Validator

Validate an AMP page against the official AMP validator and see every error.

Responsive Design Checker

Preview a website on phone, tablet, laptop and desktop screen sizes side by side.

Website Screenshot Generator

Capture a full screenshot of any website and download it as an image.

App Screenshots Downloader

Download the screenshots and icon of any App Store or Google Play app.

Google SERP Simulator

Preview how your title, URL and meta description appear in Google results.

Domain Expiration Checker

Check when a domain name expires and how many days are left.

Domain Availability Checker

Check whether a domain name is available to register across popular extensions.

Domain Name Generator

Generate brandable domain name ideas from keywords and check their availability.

HTACCESS Redirect Generator

Generate .htaccess rules for 301 redirects, www and HTTPS redirects and more.

Robots.txt Generator

Build a robots.txt file with crawler rules, blocked paths, AI bot controls and your sitemap.

URL Rewrite Generator

Turn dynamic URLs into SEO-friendly URLs with generated mod_rewrite rules.

Website SEO Audit

Crawl your website and find technical SEO issues, missing tags, broken pages and more.

Punycode Converter

Convert international domain names (IDN) to Punycode and back.

Keyword Density Checker

Check how often keywords and phrases appear in your content, with a target keyword check.

Share Link Generator

Create social share links for Facebook, X, LinkedIn, WhatsApp, email and more.

Word Frequency Counter

Count how many times every word appears in a text and export the list.

Multiple URL Opener

Open a list of URLs in new browser tabs at once.

SMTP Test Tool

Test an SMTP server by sending a real test email, with TLS/SSL and username and password login.

A/B Test Calculator

Check whether your A/B test result is statistically significant.