SSL Checker - cmlabs SEO Tools

Check whether the SSL (Secure Socket Layer) certificate on your web server is installed correctly and is valid. Try now!

As of May 2026, SSL Checker - cmlabs SEO Tools has 419 users and a 5.00/5 rating from 3 reviews in the Developer Tools category.

Usersdown 1.2 percent1.2%
419
419
Ratingno change0%
5.00
3 reviews
Reviewsno change0%
3
Version
1.0.1
Manifest V3

History

2 snapshots

Tracking since Apr 29, 2026.

430.88424.5418.12Apr 29, 2026May 26, 2026
View as table
DateUsersRatingReviewsVersion
Apr 29, 20264245.0031.0.1
May 26, 20264305.0031.0.1
Now4195.0031.0.1

Permissions & access

Permissions
activeTabtabscommandsstorage
Host access
None declared

Screenshots

SSL Checker - cmlabs SEO Tools screenshot 1SSL Checker - cmlabs SEO Tools screenshot 2SSL Checker - cmlabs SEO Tools screenshot 3SSL Checker - cmlabs SEO Tools screenshot 4SSL Checker - cmlabs SEO Tools screenshot 5SSL Checker - cmlabs SEO Tools screenshot 6

About

SSL certificate checker is a tool to check whether the SSL (Secure Socket Layer) certificate on your web server is installed correctly and is valid.

This tool can display a common name, server type, publication, validity, certificate chain, and additional certificate details just by inputting the hostname or IP address of a particular server. Download and try now!

Features & Benefits

Secure Socket Layer or SSL is a security protocol used to protect data on the internet. It secures the process of exchanging personal data of website users, such as email addresses, credit card numbers, and other sensitive information.

Here are what you can expect from this tool:

- This tool is available for free.
- Strengthening Website Identity: By checking your SSL certificate with this tool you can minimize user concerns about the security of the personal data they enter on your website.
- Protecting Important Website Data and Information: SSL certificates are useful for protecting websites from cybercrimes, especially if your website requires an email, password, or other sensitive data to log in.
- Optimizing Website Performance on Search Engines: The use of HTTPS which is characterized by ownership of an SSL certificate is one of Google's ranking factors. Therefore, websites that already have an SSL certificate will certainly have better performance in organic search.
- Comply with Online Transaction Rules: For e-commerce websites that provide online payment systems, SSL is a must-have.

How to Use

1. Open SSL Certificate Checker 
You will see several available features such as the URL column, display results, checking history, to a brief explanation of this tool.

2. Enter Website URL
To view the status and detailed information of a website's SSL certificate, you must enter the website's URL in the field provided. Make sure you have entered the URL in the correct format (e.g. https://example.com). Next, click the "Check URL" button to give the command to this tool to start checking the website.

3. View SSL Certificate Check Results
After you press the Check URL button, the system will immediately display the results of the SSL certificate check. The result field can display some information such as:

SSL Certificate:
- Common Name: domain name
- Subject Alternative Name: shows all domain names and IP addresses secured by the certificate
- Issuer: certificate issuing agency
- Serial Number: certificate number
- SHA1 Thumbprint: the unique thumbprint each certificate has

Certificate Expiration Date:
With this tool, you can also find out when the certificate from the website you are checking will expire. This can make it easier for you to maintain a good SSL installation.

SSL Installation Status
In addition to certificate details, this tool can display the certificate installation status on the website. SSL installation must be done properly because you are responsible for website visitor information.

View Checking History
The last feature of this tool is your Local History. This tool allows you to view all URL history that has been checked using this tool.

Help & Support

We value your feedback! If you have any suggestions for improving SSL Checker or encounter any issues while using the tool, please don't hesitate to let us know. Our support team is here to help. Reach us by email at:

[email protected] 
[email protected]

Technical

Version
1.0.1
Manifest
V3
Size
3.55MiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
cadoggliajpmopeepmlamhefgkobljfl
Developer ID
u1df6d9973a5e9451b2f4cfef31c023f0
Developer Email
[email protected]
Created
May 13, 2024
Last Updated (Store)
May 16, 2024
Last Scraped
May 26, 2026
Website
cmlabs.co
Support URL

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Data sourced from the Chrome Web Store · last verified May 26, 2026.