Tool

Base64 Encode/Decode

Encode text to Base64 or decode it back.

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When to use it

  • Use it to encode text into Base64 or decode it back.
  • It is useful for tokens, payload snippets, and quick debugging.
  • It also helps when checking text hidden inside encoded values.

Types and modes

  • Encode converts plain text into Base64.
  • Decode restores a Base64 string back to text.
  • Base64 is encoding, not encryption.

What to check

  • UTF-8 characters can affect the visible output.
  • Some systems use URL-safe Base64 with - and _.
  • Do not treat Base64 as a security feature.

FAQ

Is Base64 secure?

No. It only changes representation and can be reversed easily.

Why can decoding fail?

The input may be truncated or use a different Base64 variant.

Output
aGVsbG8gYmJhbHJhbmc=

Encoded as Base64.