Cryptbin
Sign in
Beta

Share API keys without Slack seeing plaintext

Encrypt env vars, tokens, and snippets in your browser, then share a link. The server stores ciphertext only — the decryption key stays in the URL fragment.

Paste and get a linkFor developers

Paste, encrypt, and share — no sign-in required.

  1. 1

    Paste

    Drop an API key, token, or config snippet into the composer.

  2. 2

    Encrypt

    Cryptbin encrypts in your browser before anything is uploaded.

  3. 3

    Share link

    Send the URL — not your Slack history or email thread.

Security model

Why developers use Cryptbin

Share API keys, configs, and snippets without handing plaintext to the server.

  • Client-side encryption

    Content is encrypted in your browser before upload.

  • Keys stay in the URL

    The server stores ciphertext only. The key stays in the URL fragment.

  • Ephemeral by default

    Set expiry or burn-after-read for one-time shares.

  • Optional accounts

    Sign in for vault recovery and link metadata.

Read the full security model

Who it's for

Teams that handle sensitive data

Beyond quick paste

More ways to use Cryptbin

Share, collect, or decrypt — three paths, same client-side encryption.

  • SnippetFileSign in

    Encrypt & send

    Share content

    Encrypt text or a file in the browser, then send one link. The key stays in the URL fragment.

    Start a share
  • FormSign inSecretsSign in

    Gather securely

    Collect answers

    Use encrypted forms or structured secrets when you need responses or key–value packs locked to you.

    Create a form

  • Open a link

    Decrypt

    Already have a Cryptbin link? Unlock ciphertext in the browser — nothing decrypts on the server.

    Open decrypt tools

Ready to share securely? Paste and get a link.

Paste and get a link