PDF Mikata

Base64 Text Encoder and Decoder

When you want to encode text to Base64 or read what a Base64 string says.

What you enter is never uploaded. Everything is processed on this device.

  1. 1Enter text
  2. 2Choose encode or decode
  3. 3Copy

Done

🔒 Your files are never sent to an external server. Everything is processed safely inside this browser.

How to use

  1. Enter text or Base64 in the upper field.
  2. Press "Encode to Base64" or "Decode to text".
  3. Copy the result and use it.

How it works

  • Characters such as Japanese are handled as UTF-8.
  • Base64 represents data using only letters, digits and a few symbols.

Notes

  • Base64 is not encryption. Anyone can reverse it, so it can't protect secrets.
  • Decoding gives text only if the original was text.

FAQ

Is what I enter sent anywhere?

No. Everything is processed inside the browser on your device.

Can I Base64-encode files too?

This tool is for text. For files, use the file Base64 tool.

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Guides for this tool

How to Encode Text to Base64 (Free)How to Decode Base64 Back to TextBase64 with Japanese and Garbled TextWhy Base64 Is Not EncryptionURL-Safe Base64 with - and _What to Do When It Does Not WorkBase64 Conversion Without Uploading

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