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Domain diagnostics and website health checking tools for webmasters
A list of free online tools to check the technical health of the website.
Domain tools
- Domain propagation checker
- When you change your hosting provider or change your domain provider, you will need to make changes in your DNS name servers. The changes will immediately start to spread to all the internet servers.
These DNS tools allow you to check the current state of DNS propagation after having made changes to your domain's records.
In theory, complete DNS resolution may take up to 48 hours for all the DNS servers arround the globe to be updated with your new settings (new name servers and/or new IP address of your website).
In practice this takes just a few hours.
You should use these tools to verify and diagnose if everything went ok and to identify possible DNS issues.- whatsmydns.net (free) lets you instantly perform a DNS lookup to check a domain names current IP address and DNS record information against multiple name servers located in different parts of the world. whatsmydns.net
- DNS Checker (free) provides dns lookup service for checking domain name server records against a randomly selected list of DNS servers in different corners of the world. Do a quick look up for any domain name and check DNS data collected from all location for confirming that website is completely propagated or not worldwide. dnschecker.org
- Domain health and issue checker
- DNS health check dnscheck.pingdom.com
- Check both the www and the non-www version of your domain.
- Who is (domain owner's information)
- List of free tools coming soon...
Web hosting checkers
- SSL certificate checkers
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- DigiCert SSL Installation diagnostics tool and common vulnerabilities checker: www.digicert.com/help
- Qualys SSL labs checker: www.ssllabs.com/ssltest
- Symantec crypto report: cryptoreport.websecurity.symantec.com/checker
- Comodo SSL analyser: sslanalyzer.comodoca.comchecker/
- NameCheap SSL checker and more: https://decoder.link/sslchecker/
- Website load time (speed) test
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- Website load time tester: https://tools.pingdom.com/
- SEO hosting parameters checklists
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- Technical aspects of SEO. A list of 9 technical issues that can affect the search engine ranking. https://www.link-assistant.com/news/technical-seo-audit.html
- Server Monitoring
- List of free tools coming soon...
SEO (Search Engine Optimization)
- Guidelines from Google for better page ranking
- How manual evaluators of Google examine the quality of the webpages. (PDF)
- How to see if manual evaluators of Google have reviewed your website
- One way that Googe tries to improve their algorithms is through Search Quality Raters.
Read here how you can detect their visit to review your website, by creating a custom segment in your Google Analytics.
Web page level tools
- HTML Validator (Check your page's HTML valid syntax)
- List of free tools coming soon...
- CSS validator (Check your page's CSS valid syntax)
- List of free tools coming soon...
- Website link checker (Check your page for broken links)
- List of free tools coming soon...
- SERP Checker
- List of free tools coming soon...
- Microsoft's HTML check
- Scan your website for issues - Microsoft Edge Development
developer.microsoft.com/en-us/microsoft-edge/tools/staticscan/ - Dataskydd's Webkoll
- A tool to run various privacy & security checks on your website.
webbkoll.dataskydd.net
EULA generators
- EULA generators for websites and software
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