1. Sucuri – https://sitecheck.sucuri.net/
Sucuri SiteCheck scanner will check the website for known malware, viruses, blacklisting status, website errors, out-of-date software, and malicious code.
2. Quttera – https://quttera.com/
Free Online Website Malware Scanner, check the website for malware and vulnerability exploits online.
3 Mozilla Observatory – https://observatory.mozilla.org/
The Mozilla HTTP Observatory is a set of tools to analyze your website and inform you if you are utilizing the many available methods to secure it.
4 Qualys SSL Labs – https://www.ssllabs.com/ssltest/
This free online service performs a deep analysis of the configuration of any SSL web server on the public Internet.
5. PCrisk – https://scanner.pcrisk.com/
Check websites for viruses, malware and vulnerability exploits online
1. Gtmetrix – https://gtmetrix.com/
GTmetrix is a free tool to test and monitor your page’s performance from various locations. See how your site performs, reveal why it’s slow, and discover optimization opportunities.
2. Pingdom tools – https://tools.pingdom.com/
This Website Speed Test is to help you analyze your website load speed.
The test is designed to help make your site faster by identifying what about a webpage is fast, slow, too big, and so on.
3. Pagespeed Insight – https://developers.google.com/speed/pagespeed/insights/
PageSpeed Insights analyzes the content of a web page, then generates suggestions to make that page faster.
4. Webpagetest – https://www.webpagetest.org/
Test your user’s real experience with global locations, modern devices, and the latest browser versions.
5. Dotcom-Tools – https://www.dotcom-tools.com/website-speed-test
Test website and page speed and detect performance issues from around the world.
1. W3C Markup Validator – https://validator.w3.org/
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
2. Dead link checker – https://www.deadlinkchecker.com/
Site Checker is a free tool, which crawls through your website identifying broken links for you to fix.