About this tool
Encode text to Base64 or decode Base64 strings back to readable text with complete multi-byte UTF-8 support for accents, non-Latin scripts, and emojis.
Base64 Encode/Decode
Encode and decode plain text and files to Base64 format with full UTF-8 character and emoji support.
Example
- mode: encode
- inputType: text
- text: LilUtils
Output
DEVWaiting
Run the tool to generate output.
When to use this tool
Use Base64 Encode/Decode when transferring binary data through text-only protocols (like JSON, email, or HTTP headers) or debugging encoded API strings.
Inputs, Formats & Specifications
- Accepted Inputs
- Plain text, UTF-8 strings, or Base64 encoded strings
- Output Formats
- Base64 ASCII string (in Encode mode) or decoded original text (in Decode mode)
- Supported Standards
- RFC 4648 Base64, UTF-8 multi-lingual text
- Browser Limits & Scope
- Base64 increases data size by approximately 33%. Large binary files exceeding browser memory limits should be handled via native file streams.
How to use this tool
- Select your mode: 'Encode' (Text to Base64) or 'Decode' (Base64 to Text).
- Paste or type your input content into the source field.
- View the converted result immediately in real time with complete UTF-8 character encoding support.
- Click Copy Output to transfer the converted string to your clipboard.
Examples
Basic Auth Header Generation
Encode username and password credentials into Base64 for HTTP Authorization headers (`Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=`).
Data URI Encoding for Images & Fonts
Convert small SVG or icon snippets into Base64 strings for direct embedding in CSS or HTML data URIs.