Fewer Than Three’s compilation of super useful web tools.
These are free web-based tools we use on a day-to-day basis.
Bookmark this list, we’ll making it better over time.
Comment and suggest other web tools that should be listed.
List Version 1.1.3
Search Engine Optimization Tools
Identify broken links on your site
Test to see the redirect chain and status codes for a URL
Test SEO-ness of a site
Site Load Time Tools
Check the load time / speed of your site
Is a site down for everyone or just you
See what your site looks like visiting from other countries
Website test URL
Find out the hosting provider of any web page
View the WHOIS record for a domain
Check a domain’s SPF records
See how DNS for a site is propagated
See the DNS history for a domain
SSL Certificates / TLS Tools
Check an SSL certificate
Check why an SSL web page is showing as insecure
Scan your website for non-secure content
Check if a website properly supports the SPDY protocol
Check your site for weak SHA-1 certificates
Security / Malware Tools
Scan a site for malware
See if a site is on a malware blacklist
Editing / Writing Tools
How a title should be capitalized
Get suggestions to make your writing better and more clear