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Free Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back into readable text instantly in your browser.
Convert Text and Base64
About the Base64 Encoder & Decoder
The Base64 Encoder & Decoder is a free online tool that converts text into Base64 encoding or decodes Base64 strings back into readable text instantly. Base64 is commonly used in web development, API integration, email systems, and data transmission to represent binary data in ASCII format.
Key Features
- Instant bidirectional conversion between text and Base64
- UTF-8 support for international characters and symbols
- One-click copy for quick reuse in code or tools
- Client-side processing for better privacy
- Helpful error message for invalid Base64 input
- Free unlimited use with no sign-up
How to Use
- Paste text or a Base64 string into the input box
- Click 'Encode to Base64' to convert plain text
- Click 'Decode from Base64' to turn Base64 back into readable text
- Copy the output for use in code, APIs, or documentation
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding system that represents data using a limited ASCII character set so it can move safely through text-only systems.
Why would I use Base64?
It is often used for API payloads, embedded assets, authentication strings, email attachments, and text-safe transport of binary data.
Is Base64 encryption?
No. Base64 is an encoding format, not a security method. Anyone can decode it easily.
Can I encode special characters and emojis?
Yes. This tool uses UTF-8 aware encoding and decoding, so it handles international characters and emojis properly.
Common use cases for Base64
- Embedding assets in HTML or CSS as data URIs
- Encoding API credentials or payload fragments for transport
- Representing binary data safely in JSON or XML
- Testing encoded strings during development and debugging
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