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TLS Version Checker Guide
Learn when to use TLS Version Checker, how to use it correctly, and how to avoid common mistakes.
What this guide covers
Use this TLS version checker to inspect which TLS protocol versions are supported by a website. It is useful for HTTPS audits, compatibility checks, security reviews, and confirming whether outdated protocols are still enabled.
This guide explains when to use TLS Version Checker, how to get a cleaner result,
and which mistakes to avoid before moving on to related tools or the main tool page.
Why use TLS Version Checker
Shows supported TLS protocol versions quickly.
Useful for audits, compatibility tests, and security reviews.
Helps confirm whether old protocols are still enabled.
Good for one-off HTTPS configuration checks in the browser.
Runs directly in the browser with readable protocol results.
How to use TLS Version Checker
Paste the domain into the input box.
Run the tool to test supported TLS versions.
Review the protocol results.
Copy the output if needed for audits, notes, or remediation work.
Best use cases
Checking whether a site supports modern TLS versions.
Finding outdated TLS support during audits.
Reviewing HTTPS compatibility before deployment or policy updates.
Common mistakes
The user expects certificate expiry or issuer details instead of protocol support.
Fix: Use SSL certificate tools if the goal is certificate metadata.
The wrong host is checked and the result does not match the intended service.
Fix: Verify the exact domain or subdomain you want to test.
The result is misunderstood as a full security audit.
Fix: Remember that TLS version support is only one part of HTTPS security review.
Use the tool
Ready to run TLS Version Checker? Open the main tool page to enter your input,
generate the result, and copy or download the output.