Built for the people who keep the web running
Clarity before complexity.
CheckFast turns scattered technical signals into one fast, understandable view — so independent developers and teams can diagnose confidently and move on.
CheckFast is an all-in-one platform for checking, monitoring, and fixing websites. We bundle 44 public checkers, validators, generators, and monitoring workflows into a single, fast interface — so you can diagnose the issue before switching between five separate services.
Whether you need to verify email deliverability, audit your SEO, check SSL certificates, validate DNS records, or monitor uptime — CheckFast handles it all with instant results and zero signup friction.
Our mission
Making website health monitoring accessible to everyone — from indie developers shipping side projects to agencies managing hundreds of client sites.
44
Public workflows
$0
One-off checks
$9
Paid monitoring