Before you launch your shiny new website, use these tools to make sure that your site is compliant, secure, high performing, and can be easily discovered by your audience.
HTML Validators
These tools look for invalid HTML on your site and show you the actual code and line numbers that you need to correct.
W3C Markup Validator
FreeFormatter
Social Media Card Testing
Tests to see how your site will look on social media feeds when someone shares or posts it. Just enter your website address and they will show you the results.
Twitter Card Validator
. How to Create a Twitter Card
LinkedIn Post Tester
Facebook Sharing Debugger
Security Scanning
Mozilla Observatory
Scans your site's infrastructure configuration to ensure that your site is safe and secure. You can also allow third-party tests to be run from Observatory. For example, a scan from ImmuniWeb will check if your site has SSL vulnerabilities.
SSL Labs
Scans your site for SSL/TLS misconfigurations and compliance.
Webmaster Search Console
These tools allow you to directly submit your website for search engine indexing. They also provide tools to measure the mobile-friendliness of your site. If you opt-in, they will periodically send you e-mail notifications if they detect an error on your site that would reduce search engine optimization.
Below are the three most popular options. Note that you will have to prove that you own your domain or are the owner of the website either by providing a specific DNS entry in your configuration or by adding a temporary meta tag to your site.
Google Search Console
Bing Webmaster Tools
Yandex Webmaster
Performance + Speed
Tests your site for speed and performance.
Google PageSpeed Insights
This is basically a web-based Lighthouse.
WebPageTest
Mobile Friendliness / Responsive
Tests to see if your site is mobile-friendly, shows you screenshots and provides suggestions on what you need to fix if your site is not mobile-friendly.
Google Mobile-Friendly Test
Bing Mobile-Friendliness Tool
Summary
Once you've launched your website, you can continuously use the above tools to make sure that your site remains secure, mobile-friendly, and delivers to your audience at blazing speeds.
Happy websiting!
You can find me on the Twitter - https://twitter.com/eddieaich
Top comments (7)
Great list of resources! One more to add for the Social Media Card Testing would be metatags.io
Thanks again Eddie!
I would also definetly recommend setting up cloudflare. The free service has a lot of usefull features.
Thanks for sharing, didn't know about the many links listed.
Thank you my guy
This is so useful, i was having issues with testing the social preview of my website on various platforms, now i can test it easily, Thank You.
Thanks.
Good stuff. Thanks.