free tools

Run the check you need, on its own

Every ConversionTools check also works as a standalone tool. No sign-up, no install — type a domain and read the result. Run the full scan afterwards to see how they fit together.

Uptime Checker

Know the second your site stops responding

· All four addresses: http, https, www and non-www
· Whether HTTPS is working and trusted by browsers
· Server response time in milliseconds

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Email Deliverability Checker

Land in the inbox, not the spam folder

· SPF: which services are allowed to send as your domain
· DMARC policy and whether it is actually enforced
· MX records and where your mail is routed

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Page Speed Checker

Fix the seconds that lose buyers

· Server reply time, page weight and compression
· Caching headers and the mobile viewport tag
· Render-blocking scripts, stylesheets and third-party tags

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Redirect & Canonical Checker

One address, one SEO signal

· http forwarding to https with a permanent redirect
· www and non-www ending up on the same address
· More than one final address serving the same site

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Or check everything at once

The free scan runs uptime, DNS and email setup, and page speed together, then links every finding to a step-by-step fix guide.

Run free scan

Need the walkthroughs instead? Browse all fix guides