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Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
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Fill in the details to see your QR code.
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OpenSSL command line generator
Build OpenSSL commands for keys, CSRs, self-signed certificates, conversions and checks.
- Free
- No sign-up
- Works on any device
About OpenSSL command line generator
Pick a task such as generating a private key, creating a CSR, making a self-signed certificate, converting PEM to PFX or checking a certificate, and get the exact openssl command to run. Fill in key size, days and subject details instead of remembering the long flag list.
How to use OpenSSL command line generator
- Choose the task: key, CSR, self-signed certificate, conversion or check.
- Fill in file names, key size and subject details.
- Copy the command and run it in your terminal.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Free to embed on your own website, with a ready-made code to copy.
- Available in 10 languages.
Also known as
Frequently asked questions
How do I create a CSR with OpenSSL?
Run openssl req -new -newkey rsa:2048 -nodes -keyout domain.key -out domain.csr, then answer the prompts. Send only the CSR to your certificate authority.
What key size should I choose?
RSA 2048 bits is a common minimum today, and 4096 is slower but larger. Elliptic curve keys are another option if your provider accepts them.
Why keep the private key safe?
Anyone holding the private key can impersonate your site. Never send it to a certificate authority. Only the CSR goes to them.
Is OpenSSL command line generator free?
Yes. OpenSSL command line generator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.
Can I put OpenSSL command line generator on my own website?
Yes. Use the Embed on your site button under the tool to copy a short piece of code and paste it into your page. It is free, needs no account, and the tool keeps working inside your page.