Website Testing Tools

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Once you’ve got a new site ready for launch it’s a good idea to run a number of tests to make sure it’s fast, secure, mobile-friendly and accessible. Here’s a list of some of my favourite services for site testing.

💻 General & Multipurpose

Browser extension that tests for SEO, speed and security best practices. Crawls your site checking multiple pages at once.

Performance, SEO, Social, Links, Popularity

Auditing, performance metrics, and best practices for Progressive Web Apps

Accessibility, security, interoperability and more

⚡ Performance

Page Speed

Performance

Pingdom Website Speed Test

Google’s Test Your Mobile Site’s Speed

GTMetrix PageSpeed Score

🔐 Security

SSL Server Test

Content Security Policy (CSP) Validator

Test security headers

HSTS Preload

🙂 Social Media Tags and Schema Markup

OpenGraph (Facebook Login required)

Open Graph Check

Twitter Cards (Twitter Login required)

Structured Data (Schema.org) Testing Tool

Google Rich Results Test

📱 Mobile Friendliness

Bing Webmaster Mobile Friendliness Test Tool

Google Mobile Friendly Test Tool

Dead Link Checker


Have I missed a site? [Feel free to open a PR on this list at GitHub](https://github.com/coliff/awesome-website-testing-tools)

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