SSH Config Generator

Juggling servers, jump hosts, and multiple GitHub, GitLab, or AWS accounts with different SSH keys? Describe each host and key below to generate a ready-to-paste ~/.ssh/config, plus the copy/paste commands to connect to a server or point a project at the right alias and commit identity.

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Everything runs in this browser. Your hosts and keys are saved to this browser's local storage so they survive a refresh; project URLs are throwaway and reset on reload. Nothing is ever sent anywhere.

Host Aliases

New Host Alias

Git

Servers

Full ~/.ssh/config

Generate a new SSH key›

Creates the key pair in whatever directory you run it from, so cd into the folder you want first (for example ~/.ssh/github/keys). The command is identical in bash and Windows PowerShell.

Key type

Recommended. Short, fast, and accepted by GitHub, GitLab, Bitbucket, and every current OpenSSH server.

CommentLabels the key so you can tell it apart in a host's authorized keys list.File nameThe private key. A matching .pub file is written next to it.

Generate the key pair

ssh-keygen -t ed25519 -f id_ed25519

You'll be prompted for a passphrase. Leave it empty for an unattended key, or set one and let ssh-agent hold it.

Print the public key to upload

cat id_ed25519.pub

Paste this output into GitHub, GitLab, or the server's authorized_keys. Never share the file without the .pub extension.

Point a host's IdentityFile at the private key's full path — for example ~/.ssh/github/keys/id_ed25519. On Linux/macOS, tighten the permissions: chmod 600 id_ed25519.

Import an existing ~/.ssh/config›

Paste your current config below. Host, HostName, User, Port, IdentityFile, and IdentitiesOnly are read into cards; comments and other directives are ignored. Each host is labelled a git host or a server based on its user and hostname — flip the toggle if a guess is wrong. Commit identity and project URLs aren't part of an SSH config, so add those after importing.