All tools

Base64 Tool

Encode and decode Base64 text with clear browser-only handling.

Text is processed in this tab. It is not uploaded or saved in browser storage. Limit: 1,000,000 characters.

Ready. Paste text or load the example.

How to use

  1. Choose Encode to convert Unicode text to UTF-8 bytes and standard Base64. Choose Decode to read Base64 as UTF-8 text.
  2. Spaces, tabs, and line breaks around Base64 data are ignored. Standard Base64 is supported; URL-safe Base64 and arbitrary binary files are not.
  3. Base64 is encoding, not encryption. Do not treat an encoded password or access token as protected.

Example input

Hello, 中文・日本語 👋