Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back into readable text - directly in your browser.
Encode text without leaving your browser
Enter plain text to encode or Base64 to decode.
The encoded or decoded result appears here.
How to use the Base64 Encoder / Decoder
- Enter plain text or a Base64 value.
- Choose Encode or Decode.
- Copy or download the result.
What is Base64?
Base64 is an encoding format that represents binary or text data with a set of ASCII characters. It is encoding, not encryption, so it should not be used to protect secrets.
When is Base64 useful?
Base64 can be useful for data URLs, basic authentication values, email and content encoding, APIs, and everyday developer workflows.
Privacy
Your input stays in this page while you work. Encoding and decoding happen locally, with no upload or automatic storage.
Related tools
Base64 FAQ
Is Base64 encryption?
No. Base64 is an encoding format and can be decoded by anyone with the value.
Does ToolBrio upload my text?
No. This tool processes text locally in your browser and does not send it to a server.
Can I encode Unicode or Bangla text?
Yes. The tool uses UTF-8-aware browser APIs for Unicode text, including Bangla, Arabic, Malay, and emoji.
Why is my decoded Base64 invalid?
The value may contain invalid characters, incorrect padding, non-UTF-8 bytes, or may not be Base64 text at all.