Base64 Encode/Decode Tool User Guide

Tool Overview

This tool is an online Base64 encode/decode tool that supports Base64 encoding and decoding of text. Base64 is a method of using 64 characters to represent arbitrary binary data, commonly used to represent, transmit, and store binary data in scenarios that require text data processing. The tool supports single text processing and batch processing, supports line-by-line processing, and all calculations are completed locally in the browser to protect user privacy.

Usage Steps

Encoding Operation:

1. Open the Base64 Encode/Decode tool page.

2. Enter or paste the text content in the "Input Text" area at the top that needs to be encoded.

3. Click the "Encode ↓" button, and the tool will perform Base64 encoding on the input text.

4. The encoding result will be displayed in the "Output Text" area at the bottom for users to copy and use.

Decoding Operation:

1. Enter or paste the Base64 encoded string in the "Output Text" area at the bottom that needs to be decoded.

2. Click the "Decode ↑" button, and the tool will decode the Base64 string.

3. The decoding result will be displayed in the "Input Text" area at the top for users to copy and use.

Features

• Support for both Base64 encoding and decoding operations
• Support for single text processing
• All calculations are completed locally in the browser to protect user privacy
• Simple and intuitive interface design with input and output arranged vertically
• Real-time processing, fast response

Technical Notes

Base64 encoding uses 64 characters (A-Z, a-z, 0-9, +, /) to represent binary data, and uses = as a padding character. Base64 encoding increases the data size by approximately 33%.

Base64 encoding is not an encryption algorithm, but an encoding method that anyone can decode. Therefore, do not use Base64 to protect sensitive data.

Application Scenarios

• Email attachment transmission
• Transmitting binary data in URLs
• Embedding binary data in XML/JSON
• Storing small image data (Data URI)
• Simple data obfuscation (not encryption)
• Data transmission in network protocols