Free Online Tool to Check the CSR | Check CSR to verify its contents

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Check CSR

About Check CSR

It is important to make sure that the information included in your CSR is accurate. And to make your work easy a tool known as Check CSR is developed. All you have to do is copy and paste your CSR into the field and then the tool will do the rest of it. 

The Certificate Signing Request (CSR) is a block of encoded script that consists of information from the firm that an SSL certificate will be issued and the SSL public key. When a new SSL certificate is produced that's when a CSR is developed. The Check CSR tool is a great method to decode your (CSR) certificate Signing Request and confirm that it comprises the right information. 

What is a Check CSR tool?

Check CSR is a tool that helps in decoding a CSR so that you can see and analyze its contents. 

Use this CSR Decoder to decode your Certificate Signing Request and verify that it comprises valid information. 

Once a CSR is developed it is problematic to verify what information is included in it since it has been encoded. Heretofore certificate authorities utilize the information in CSR to build the certificate, CSR decoding is needed to make sure that your information is correct. 

Features of CSR Checker

CSR signature verification

The subject could include some major errors in CSR and once the certificate has been issued, it is difficult to rectify it. The signature on the CSR will confirm that it was the subject who had asked for the data with errors to be incorporated into the certificate.

Sure, the subject can later claim that it was not his key that signed CSR, but that would be difficult for the subject to repudiate. That's why it is wise to use CSR Checker and verify the information before submitting it to the CA. 

Key size check

Key length is proportional to the number of bits in an encryption algorithm’s key. If it has poor security then it means the key is short in length, though a long key length does not confirm that there's favorable security. The maximum number of combinations needed to crack an encrypted algorithm is determined by the key length.

MD5 and SHA1 fingerprints

SHA1 stands for Secure Hash while MD5 stands for Message Digest. Algorithm square estimates the hashing algorithms where it finds the speed of MD5 is rapid in comparison to the speed of SHA1.

Yet, SHA1 contributes more security than MD5. The design behind these hashing algorithms is that these square gauges are accustomed to generating a novel digital fingerprint of information or message that is comprehended as a digest. 

Additional Resources

Certificate authorities utilize the data in CSR to develop certificates. Hence, it is crucial to examine CSR for accuracy. The check CSR tool is a great way to decode and verify your CSR.

Steps to use the CSR Checker tool

Using this tool is very easy, follow the below steps to get started with it.

  • Access the CSR Checker tool. 
  • Copy, and paste the Certificate Signing Request or CSR file. 
  • Press the submit button. 
  • Within a few seconds, the tool will show you the information in your CSR.

Benefits of Check CSR tool

 Renewing CSR

The Certificate Signing Request (CSR) Checker tool checks the information included in your CSR for you to verify if it is authentic and up to date. You could be renewing but the details in your CSR are no longer relevant or has been altered, in such case, you should generate a fresh CSR with accurate information before you send it to your CA.

Self-Signing Certificate Using Private Key

CSR is provided to CA once it is generated, to get the certificate signed. In case of test intentions or inner use cases, an option for self-signing the CSR certificates is available which is in turn performed by the user or client instead of the CA. 

Check a CSR for Accuracy

A Check CSR tool can be utilized to check a CSR for accuracy. This tool will decrypt the CSR and verify if all the information comprised within it is correct or not. You can employ this CSR Check tool to ensure that the domain name, company name, and SSL public key are all right. If any errors are found, the tool itself will notify you regarding it so that you can rectify them before you submit the CSR to a certificate authority (CA).

Avoid Submitting an Inaccurate CSR to a CA

Building a Certificate Signing Request can be complicated. Many times, minor errors can be made while encoding the article, which in turn can result in CSR full of errors when submitting to a Certificate Authority. To save yourself from submitting an inaccurate CSR, you should make sure that all of the given input is valid before you submit it. Review the spelling of domain names and company names, and make sure that the encoded text is the same as the one in the original document.

CSR Checker can be used by:


Check CSR tool provides you with a great way to decrypt your Certificate Signing Request (CSR) and verify that the information in it is accurate. A Certificate Signing Request is encoded text that comprises the evidence about the company that an SSL certificate will be issued and the SSL public key.

A company needs to make sure that the information in the CRS must be accurate since certificate authorities use the same information in CSR to make the certificate. Once a CSR is generated it is a very hectic task to verify the error in the text because it is encoded and then to rectify it. 

Small Businesses 

With the growing world, consumers are becoming increasingly aware of the significance of social obligation, and actively seek commodities from businesses that run ethically. Check CSR tool verifies that you’re a business that takes concern in wider social matters, rather than only those that result in your profit margins, which will persuade consumers who share the same values. Thus, it gives rise to good business perception to regulate sustainably.


One of the main motives people apply to different firms is because of their CSR policy. From a consumer's perspective, a CSR strategy reflects that a firm is compassionate and treats all people, along with its employees, with due respect. And an industry that is devoted to enhancing the world is likely to attract more talent, plus more consumers. This indicates how significant employees hold social responsibility. CSR efforts furthermore benefit foster a more efficient and positive work atmosphere for employees. It encourages volunteering and optimistic efforts from employees.

Website owner

You can call for a cryptographic key for your website adopting Certificate Signing Requests, or CSR for short. Your customers will use this to sign their SSL certificates. As a website owner, making sure that your CSR contains all accurate information is crucial as it's difficult to rectify mistakes when the CSR is generated using invalid information. This leads to a decline in website visitors as viewers are never interested in visiting a site having a poor CSR report. 

Final Thoughts

Check CSR tool is a simple and very useful tool that decodes data about your certificate signing request and makes sure that it contains correct data. Certificate Signing Requests (CSR) are encrypted texts consisting of personal information when requesting an SSL certificate from a Certificate Authority (CA). 

Once a CSR is created it is encoded bringing about the challenging task to infer what information is enclosed within. Therefore it is needed to decode CSR to make sure that the information in it is accurate since it will be used further to generate the certificate. The Check CSR tool plays a great role in doing so.

CSR Checker - Related FQAs

Ques: What does a CSR look like?

Ans: Most CSR is generated in the Base-64 encoded PEM layout. This layout comprises the "-----BEGIN CERTIFICATE REQUEST-----" and "-----END CERTIFICATE REQUEST-----" lines at the opening and verge of the CSR. Also, a PEM format CSR can be used in a text editor.

Ques: How can I generate a CSR and private key?

Ans: If you wish to generate a CSR and private key on the server where the certificate will be used, you will have to follow the instructions from any of the Certificate Authorities. Once the CSR is generated you can use the Check CSR tool to look for the best SSL certificate according to your needs. 

Ques: What information is included in a CSR?

Ans: After you generate a fresh SSL certificate, you also need to create a Certificate Signing Request (CSR). The CSR will include information about the company that is going to be using the SSL certificate and the SSL public key. The same information will be borrowed by certificate authorities to build the SSL certificate.

Ques: How can I decode a CSR by using the CSR decoder tool?

Ans: To decode a CSR with the use of a CSR decoder tool, you simply have to enter your CSR into the text box provided and click on the decode button. Within seconds the CSR decoder tool will then depict the information encoded in your CSR. Further, this information can be utilized to verify the accuracy of the information in your CSR. Also, the CSR decoder tool can be used to look for the SSL public key that is going to be used in and with your SSL certificate.

Ques: What are the outcomes of submitting an inaccurate CSR to a CA?

Ans: If you submit an inaccurate CSR to a CA, there can be severe fallouts. The CA can choose not to issue the certificate based on the inaccuracy of information in the CSR. This will not only delay your SSL certificate generation but will also injure your reputation with the CA. Thus, it is important to make sure that the information provided by you must be right.