Base64 Decode Tool
Fast Base64 encoding and decoding tool with one-click mode switching
Base64 Input
Paste your Base64 encoded text here
Decode Result
The decoded text will be displayed here
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data that needs to be stored and transferred over media designed to deal with textual data.
How to Use Base64 Encoder/Decoder
Step 1: Choose Mode
Select whether you want to encode text to Base64 or decode Base64 to text
Step 2: Enter Data
Paste or type your text in the left input area
Step 3: Get Results
The result appears instantly in the right output area
Step 4: Copy & Use
Click the copy button to copy the result to your clipboard
Common Use Cases
Email Attachments
Encoding binary files for email transmission using MIME protocols
Web Development
Embedding images directly in CSS or HTML using data URLs
API Data Transfer
Sending binary data through JSON APIs and REST services
Database Storage
Storing binary data in text-based database fields
Configuration Files
Encoding sensitive data in configuration files and environment variables
Why Use Our Base64 Tool?
Real-time Conversion
Instant encoding and decoding as you type
Error Detection
Automatic validation of Base64 format with clear error messages
Two-way Conversion
Switch between encoding and decoding with one click
Large File Support
Handle large text inputs without performance issues
Privacy Focused
All processing happens in your browser - no data sent to servers
Mobile Friendly
Works perfectly on desktop, tablet, and mobile devices
Pro Tips
- Base64 encoded data is case-sensitive
- Padding characters (=) at the end are important
- Remove line breaks when decoding Base64 from email
- Use for embedding small images in CSS as data URLs
- Perfect for API authentication tokens