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Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 strings. Supports Unicode and special characters.

What is Base64 Encoder/Decoder?

Base64 Encoder/Decoder is a free online tool that converts text to Base64 format and decodes Base64 strings. Widely used in QA for testing API authentication headers.

How to encode/decode Base64?

  1. Paste your text or Base64 string into the input field
  2. Click "Encode" to convert text to Base64
  3. Click "Decode" to convert Base64 back to text
  4. Copy the result with one click

Where is Base64 used in testing?

Base64 is used in HTTP Basic Authentication headers (username:password encoded), encoding file content in API payloads, and creating test data for binary-accepting APIs.