Base64 Encoder
Encode text or files into Base64.
Base64 represents binary or text data using only 64 safe ASCII characters, which makes it easy to embed in JSON, HTML, CSS or URLs.
About Base64 Encoder
Encode plain text or uploaded files into a Base64 string for embedding in data URIs, API payloads, or configuration files. Everything runs locally, so this Base64 encoder is safe to use with API keys, tokens, and other sensitive strings you don't want touching a third-party server.
Base64 represents binary or text data using only 64 safe ASCII characters, which makes it easy to embed in JSON, HTML, CSS or URLs. This Base64 encoder converts your text to a Base64 string instantly, handling Unicode correctly so emojis and non-English characters encode without corruption.
How to use Base64 Encoder
- Paste or type the text you want to encode.
- The Base64 output appears instantly.
- Copy the encoded string.
- Use it in a data URI, header, config file or API request.
Key features
- Correct UTF-8 handling for international text.
- Instant, live conversion.
- One-click copy and download.
- Nothing leaves your browser.
Common use cases
- Building Basic authentication headers or data URIs.
- Embedding small text payloads in JSON or configuration.
- Encoding values for transport through systems that only allow ASCII.