Does it generate key pairs?

No — the crypto tool already does that with WebCrypto. This is the place that converts that PEM into a one-line OpenSSH key, which is where people actually get stuck.

Why do I need the fingerprint?

In authorized_keys one line is one door pass, but you cannot tell whose is whose by eye. Removing one on the server needs the fingerprint, and normally you have to log in to see it.

Does my key leave the browser?

No. The key never leaves your browser.

SSH key viewer

Name: SSH 열쇠 보기
Author: KarmoLab

Read authorized_keys lines · SHA256 fingerprint · PEM → OpenSSH

SSH 열쇠 보기

authorized_keys 를 붙여넣으면 줄마다 종류·길이·주석·지문을 냅니다. 공개키 PEM 을 OpenSSH 줄로도 바꿉니다

authorized_keys 붙여넣기

공개키 PEM (OpenSSH 줄로 바꿀 것)

붙일 주석

authorized_keys 를 붙여넣으세요

열쇠는 브라우저 안에서만 읽습니다 — 어디에도 올리지 않습니다. 지문은 서버에서 그 줄을 고를 때 쓰는 그 값(SHA256:…)입니다.

Paste an SSH public key line and get its type, size, comment and SHA256 fingerprint. It also turns a PEM public key into a one-line OpenSSH key.

How to use it

Paste a line starting with ssh-rsa / ssh-ed25519
Check the type, size, comment and fingerprint (SHA256:…)
Use the fingerprint to pick the line to remove on the server
Have a PEM public key? Convert it to a one-line OpenSSH key

Common questions

Does it generate key pairs?: No — the crypto tool already does that with WebCrypto. This is the place that converts that PEM into a one-line OpenSSH key, which is where people actually get stuck.
Why do I need the fingerprint?: In authorized_keys one line is one door pass, but you cannot tell whose is whose by eye. Removing one on the server needs the fingerprint, and normally you have to log in to see it.
Does my key leave the browser?: No. The key never leaves your browser.

Other tools

Stays on your device What you enter is handled inside your browser only — nothing is stored or sent anywhere.

This tool page states where what you enter goes — see the badge above. All tools · KarmoLab · Who made this · Built with AI. View source