About The Base64 Encode and Decode

The Base64 Encode and Decode tool converts UTF-8 text to Base64 and decodes Base64 strings back to readable text for debugging, transport, and inspection workflows.

Encoding and decoding run locally in your browser. Base64 is not encryption, so avoid treating encoded secrets as protected data.

How to Encode or Decode Base64 Online

1. Paste plain text or a Base64 string into the Text box.
2. Click Encode to create a Base64 value from UTF-8 text.
3. Click Decode to convert a Base64 value back to text.
4. Use Load sample for a quick encode example, then review or copy the output.

Choosing Options Correctly

Encode:
- Use this when the input is normal text.
- Useful for small payloads, examples, and transport-safe snippets.

Decode:
- Use this when the input is already Base64.
- If decoding fails, check for missing padding, copied whitespace, or non-Base64 characters.

Common Use Cases

• Inspecting encoded API payloads or log values.
• Preparing short text for systems that expect Base64.
• Checking examples for documentation or tests.
• Confirming whether an encoded value contains readable UTF-8 text.

Quick FAQ

Is Base64 secure?
No. Base64 is encoding, not encryption. Anyone can decode it if they have the text.

Does this handle binary files?
This page is focused on UTF-8 text. Use a file-focused tool if you need to encode binary uploads.

Is my text uploaded?
No. Encoding and decoding are designed to run in the browser.

Why did decoded text look wrong?
The input may not be valid Base64 text, may use a URL-safe variant, or may represent binary data rather than readable UTF-8.