Gampangin
Menu
Enter
Client-side

Comparison

Base64 vs Encryption

Why Base64 is encoding and not encryption, and what each is actually for.

By Gampangin· Published · Updated · Reviewed by Gampangin· 1 min read· Base64

AI-assisted draft. Editorial responsibility: Gampangin.

Base64 changes representation so bytes survive text transport. Encryption changes representation so only the holder of a key can read the data. Only one of them provides confidentiality.

01Choose by purpose

  • Need data to survive a text-only channel: Base64.
  • Need to keep data secret: encryption.
  • Need to detect tampering: a message authentication code, not Base64.

Sources

  1. RFC 4648: The Base16, Base32, and Base64 Data Encodings — IETF (accessed 2026-09-01)
  • ToolAES Encryption Tool

    Encrypt and decrypt text with AES-256-GCM in your browser, with the key derived locally from a passphrase.

  • ToolBase64 Encoder / Decoder

    Encode UTF-8 text to Base64 or decode Base64 back to UTF-8 text.

  • ToolBase64 ↔ PDF

    Encode a PDF to Base64 or decode Base64 back to a PDF — standard or URL-safe, with an optional data-URL prefix — locally in your browser.

  • ToolBase64URL Encoder / Decoder

    Encode UTF-8 text to URL-safe Base64 or decode a Base64URL value back to text.

  • ReferenceWhat is Base64?

    A reference for Base64 encoding: what it is, its alphabet, and its size overhead.

  • ReferenceCrypto and Secret Handling Reference

    A lookup reference for secret generation, password hashing parameters, HMAC and JWTs, AES-GCM, PEM handling and entropy measures.

  • ComparisonJSON Formatter vs JSON Validator

    When to reformat JSON and when to validate it, and why the two tools answer different questions.

  • ComparisonJSON vs YAML

    How JSON and YAML differ in syntax, typing, and guarantees, and what that means when you convert a document between them.

  • CategoryBase64

    Encode, decode, and reason about Base64 data.