Security Tools

SSL Certificate Checker

Inspect a public HTTPS certificate hostname, issuer, validity period, expiry, SANs and certificate warnings.

Export generated result Generate a result below, then save it as PDF, Excel or Word.

Generate a result in the tool below, then choose a format.

Inspect SSL/TLS certificate

Connects to the public HTTPS endpoint and reads its presented certificate.

Certificate report

Hostname, issuer, validity dates, expiry and SAN names.

Enter an HTTPS URL to inspect its certificate.

What SSL Certificate Checker does

Inspect a public HTTPS certificate hostname, issuer, validity period, expiry, SANs and certificate warnings. This page is designed for a focused security tools task, so the useful result depends on supplying the right source value and checking the output against the job you are actually trying to complete.

Before you run it

Confirm the exact host, URL or network value being tested. For SSL Certificate Checker, apply this guidance to the exact input and output handled by this utility: Keep an untouched copy of the original input so you can compare the result or repeat the process. For the first run, use a non-critical domain or URL whose expected behavior you know; this makes unexpected formatting or interpretation easier to spot.

How to use SSL Certificate Checker

When using SSL Certificate Checker, use this utility-specific checkpoint: prepare the source value in the format requested by the workspace above.
For SSL Certificate Checker, apply this specifically to the input handled by this utility: choose only the options that apply to your current task.
When using SSL Certificate Checker, connect this checkpoint to the file, text or data being processed on this page: Run the tool and inspect the entire result, not only the first visible line or value.
In SSL Certificate Checker, interpret this point in the context of the page's actual utility workflow: Compare the output with the original requirement before copying, exporting or implementing it.

What to check in the result

Network and search-engine behavior can change with DNS, caching and server configuration, so confirm important results from the final environment. For SSL Certificate Checker, test this consideration against the utility's specific transformation or validation task: If the output will affect a website, dataset, calculation, configuration or published asset, test it where it will actually be used rather than assuming a browser preview proves the final implementation.

Common mistakes

When using SSL Certificate Checker, use this utility-specific checkpoint: using incomplete input and treating the generated output as authoritative.
For SSL Certificate Checker, test this consideration against the utility's specific transformation or validation task: Changing several options at once and then being unable to identify which setting affected the result.
For SSL Certificate Checker, validate this point against the page's actual transformation task: overwriting the source before the new output has been checked.
For SSL Certificate Checker, apply this guidance to the exact input and output handled by this utility: Using sensitive credentials, private keys or confidential customer information in a task that does not require them.

When to verify elsewhere

SSL Certificate Checker is a convenience tool, not a substitute for authoritative documentation or professional review where the result carries legal, financial, security or production risk. For SSL Certificate Checker, apply this guidance to the exact input and output handled by this utility: Standards, browser behavior, provider requirements and formulas can change, so verify time-sensitive requirements with the relevant official source.