Tools
Free Website Speed and Performance Testing | Dotcom-Tools - https://www.dotcom-tools.com/
GTmetrix | Website Performance Testing and Monitoring - https://gtmetrix.com/
PageSpeed Insights - https://developers.google.com/speed/pagespeed/insights/
Geekflare
FREE tools to test your website performance, domain security, whois hosting, screenshot, PING, traceroute and more
Geekflare Tools for Security, Performance, DNS, IP, Hosting and SEO - https://gf.dev/toolbox
Geekflare Website Audit Tool - Performance, SEO, Best Practices - https://gf.dev/website-audit
Content Security Policy Header Generator - https://www.cspisawesome.com/
SSL
SSL Server Test (Powered by Qualys SSL Labs) - https://www.ssllabs.com/ssltest/index.html
SSL/TLS安全评估报告 - https://myssl.com/
Analyse your HTTP response headers - https://securityheaders.com/
Translate
DeepL Translate - https://www.deepl.com/translator