All diagnostic tools
Each tool runs a real check against your website or domain and explains what it found, why it matters and how to fix it. No account required.
Website Health
Availability, speed, mobile rendering and broken links.
Website Audit
Run one combined check across availability, HTTPS, SEO basics, security headers and response speed.
Website Health
Open ToolWebsite Down Checker
Check whether your website is online, reachable and returning the expected HTTP response.
Website Health
Open ToolWebsite Speed Test
Measure server response time, transfer time and page weight to see what is slowing your pages down.
Website Health
Open ToolMobile Website Checker
Check viewport configuration, responsive signals and mobile-hostile markup patterns.
Website Health
Open ToolBroken Link Checker
Scan the links on a page and report which ones return errors or fail to resolve.
Website Health
Open ToolSEO
Metadata, indexability and on-page technical signals.
Domain & DNS
DNS records, SSL certificates and HTTP responses.
MX, SPF, DKIM and DMARC deliverability records.
Security
Response headers, HTTPS enforcement and exposure checks.
Business
Planning and budgeting tools for digital projects.