Base64 Encode Decode Online Free Tool

Input

No file selected

Output

Select action and provide input to see results

What is Base64?

Base64 Encode Decode Online Free Tool

Base64 is a simple encoding technique used to convert binary data (like images, files, or any non-text data) into plain text. It is widely used in web development, APIs, and email to safely transmit or store data.

Why Use Base64 Encoding?

When you send files or data over the internet, some characters can break or get lost depending on the system or format used. Base64 encoding ensures that your data is safely converted into a string of ASCII characters, which can be easily shared and later decoded back to its original form.

Common Uses of Base64

Embedding Images

Inline images in HTML/CSS files

Data Transmission

Sending files via JSON or XML

Email Attachments

MIME encoding for emails

Development

Data obfuscation in code

How Our Tool Helps

  • ✓ Encode any string or file content into Base64 securely
  • ✓ Decode Base64 text back to its original format
  • ✓ No login or watermark required
  • ✓ Fast and free in your browser

Ready to Encode/Decode?

Try our free online tool and make your task easier than ever!

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How to Use the Base64 Tool

Basic Functionality

This tool allows you to encode text/files to Base64 and decode Base64 back to original format.

Note: For file operations, maximum file size is limited to 10MB for optimal performance.

Encoding Instructions

  1. Select Encode action
  2. Choose Text input type
  3. Enter your text in the input box
  4. Click Process button
  5. Copy the Base64 result using the copy button

  1. Select Encode action
  2. Choose File input type
  3. Upload your file using the file selector
  4. Click Process button
  5. The Base64 encoded version will appear in the output
Large files may take longer to process

Decoding Instructions

  1. Select Decode action
  2. Choose Text input type
  3. Paste your Base64 string in the input box
  4. Click Process button
  5. The decoded text will appear in the output

  1. Select Decode action
  2. Choose File input type
  3. Paste either:
    • Full data URL (starts with "data:...")
    • Or raw Base64 content
  4. Click Process button
  5. Enter a filename when prompted
  6. Click the Download button to save the file
For images, use the full data URL for best results

Tips & Tricks

For images, you can paste the full data URL (starts with "data:image/...")
The tool automatically detects common file types (JPG, PNG, PDF, etc.)
Use the copy button to quickly copy Base64 results to clipboard
Clear file selection by clicking the button

Common Use Cases

Embedding Images

Encode images to Base64 for direct embedding in HTML/CSS

Data Transmission

Encode files for safe transmission in JSON APIs

File Recovery

Decode Base64 strings back to original files

Data Storage

Store small files as text in databases