Website Testing

Website Speed Diagnosis

1. ByteCheck
2. DotCom-Tools
3. Fast or Slow
4. GeekFlare
5. GTMetrix
6. Pingdom Tools
7. Waterfaller.dev
8. WebPageTest.org
9. GeoPeeker
10. web.dev/vitals/

Security

1. Sucuri SiteCheck

DNS Propagation

1. DNS Checker
2. DNS Map
3. GeoPeeker
4. MX ToolBox
5. Whats My DNS?

Broken Links?

1. Dead Link Checker
2. Hexometer

Up-Time Monitoring

1. FreshPing.io
2. Hexometer
3. Uptime Robot
4. Better Uptime

SPF Diagnosis and Help

1. dmarcian SPF Survey
2. dmarc SPF Checker
3. SPF Wizard