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Base64 Encoder/Decoder

Encode and decode Base64 strings online — supports UTF-8

Browser-based, files never uploaded Instant results Works on any device

How to use Base64 Encoder/Decoder

  1. 1Choose Encode or Decode mode
  2. 2Paste text or Base64 string
  3. 3Get instant result
  4. 4Copy to clipboard

About this tool

Encode text to Base64 or decode Base64 strings online. Supports UTF-8 characters, JSON encoding. Encode files to Base64 data URLs.

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Frequently asked questions

Does it handle emojis and special chars?

Yes — uses UTF-8 safe encoding via TextEncoder.

Can it encode files?

Yes — upload a file to get its Base64 data URL.