Base64 Encoder & Decoder
Convert standard JSON strings into Base64 format and reverse-decode them client-side.
100% Client-Side (No data leaves your device)
Input Workspace
0 chars
1
Output Result
1
Base64 output will appear here...
User Guide: Base64 Encoding and Decoding
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that translates raw data into a sequence of 64 printable ASCII characters. It is commonly used to transmit binary assets (like images or tokens) over channels designed to handle plain text, such as HTTP headers or JSON bodies.
Step-by-Step Instructions
- Enter Data: Paste your structured text or Base64 payload in the input panel.
- Configure settings: Select "Encode" or "Decode" mode, and toggle "URL-Safe" if using values inside URL query strings.
- Export results: Copy the text result or download the raw file instantly.
UTF-8 Integrity & URL Safe Formats
Simple Base64 tools fail when processing Unicode characters (like emojis or foreign alphabet letters). Our parser implements safe UTF-8 byte array translations natively. Toggling "URL-Safe" strips standard padding indicators and maps special characters correctly (replacing + with - and / with _).