Base64 Encoder/Decoder

Base64 Encoder/Decoder Guide

How to Use This Tool

1. Enter Text in the input box (text to encode or Base64 to decode)

2. Choose Action:

   • Click “Encode to Base64” to convert text to Base64

   • Click “Decode from Base64” to convert Base64 back to text

3. View Results in the output box below

4. Copy Results with one click using the Copy button

Key Features

✔️ Bidirectional Conversion: Encode and decode in the same tool
✔️ Large Text Support: Handles multi-line content efficiently
✔️ Error Handling: Detects invalid Base64 during decoding
✔️ Copy Functionality: One-click result copying

Common Use Cases

• Encoding strings for URL parameters

• Decoding API responses

• Basic data obfuscation

• Embedding small data files in code

Technical Notes

⚠️ Character Encoding: Uses UTF-8 encoding/decoding
⚠️ Limitations: Not suitable for very large files (>MBs)
⚠️ Formatting: Preserves all whitespace and special characters

🛠️ Advanced Usage

Keyboard Shortcuts:

• Ctrl+Enter in textarea: Auto-encode content

• Tab: Navigate between controls

Special Cases:

• To encode binary data: First convert to text representation

• For URL-safe Base64: Manually replace +/ with -_ after encoding