Base64 converter

Encode UTF-8 text or decode strict Base64 and URL-safe Base64.

Processed on your device

Input

Open a local UTF-8 text file5 MiB maximum. The file opens in the text box above.Or drop a file here.

Options

Options

How to use this tool

  1. Choose encoding or decoding.
  2. Base64 represents UTF-8 bytes in an ASCII alphabet.
  3. URL-safe mode replaces plus and slash and omits padding.

Things to know

  • Decoded bytes must be valid UTF-8 text. Use the character-encoding converter for other encodings.
  • Each text input accepts up to 5 MiB. Output is limited to 25 MiB and combined text settings to 1 MiB.