Base64 Encoder Decoder

FormatStandard Base64Base64URL

Input

Output

0

Input chars

0

Input bytes

0

Output length

About Base64 Encoder Decoder

Local Base64 and Base64URL converter for text

Encode UTF-8 text to Base64 or decode Base64 and Base64URL back to readable text. It works well for Unicode, emoji, config snippets, and multiline content while keeping processing in your browser.

Features

  • Standard Base64 and Base64URL formats
  • UTF-8, Unicode, and emoji support
  • Paste, copy, clear, and swap actions
  • Local browser processing for privacy

How to use

  1. 1Choose encode or decode mode
  2. 2Select standard Base64 or Base64URL
  3. 3Enter text or encoded content
  4. 4Copy the result or swap it back into the input

FAQ

How is Base64URL different from standard Base64?
Base64URL uses URL-safe characters, usually replacing + and / with - and _, and padding may be omitted.
Is my text uploaded to a server?
No. Encoding and decoding run locally in your browser, so your text stays on your device.
Does it support Unicode and emoji?
Yes. Text is handled as UTF-8, so Unicode, emoji, and multiline content are supported.

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