Chckr

Website Security Checks

Perform multiple website security checks with the top website testing tools from across the web, all from one interface. Check URL safety for any webpage. Enter a URL to test and hit Start.

  1. Enter your URL
  2. Pick your test below
  3. Test it

Filter by type of website test, then click a test.

Speed9

SEO3

Social5

Accessibility1

Security7

Other2

Launch All Tests At Once

This will open a new tab or window for each of the test sites above. If only one test opens, your browser is blocking pop-ups. Allow pop-ups for chckr.co and try again.

Your browser may ask you to allow pop-ups the first time.

Not sure what your result means? Browse all test guides.

Understand what these tests are telling you

  • Security Headers TestScan your URL for HTTP security headers and get a grade from A to F, with an explanation of each missing header and what it protects against.
  • SSL TestRun the Qualys SSL Labs test on your domain for a full grade on your certificate, protocol support, cipher strength and known TLS vulnerabilities.
  • HSTS Preload CheckCheck whether your domain qualifies for the HSTS preload list, which tells browsers to only ever connect to your site over HTTPS.
  • Hardenize Domain ReportRun a Hardenize report on your domain for a single view of DNS, HTTPS, email authentication and security headers, with SPF, DKIM and DMARC included.
  • HTTP Observatory ScanScan your site with the Mozilla HTTP Observatory for a security score covering headers, cookies, cross origin policy and subresource integrity.
  • Google Safe Browsing CheckCheck whether Google Safe Browsing has flagged your URL as unsafe, which is what triggers the red warning screen in Chrome and most other browsers.
  • Sucuri SiteCheck ScanScan your URL with Sucuri SiteCheck for malware, defacement, injected spam, outdated software and blocklist status across major security vendors.