Base64 Encoder/Decoder
Free online Base64 encoder and decoder tool. Encode text to Base64, decode Base64 to text, and handle files and images with ease.
Base64 Encoder
Features
How to Use Base64 Encoder/Decoder
Step-by-Step Guide
- 1Choose between Encode or Decode mode
- 2Enter text or upload a file for processing
- 3View the result in real-time
- 4Copy or download the result
What is Base64?
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 transmitted over text-based protocols.
Common uses:
- Email attachments
- Embedding images in HTML/CSS
- API data transmission
- Storing binary data in JSON
Common Use Cases for Base64
Email Attachments
Encode binary files like images, documents, and videos for email transmission.
Web Development
Embed images directly in HTML/CSS using data URLs for faster loading.
API Development
Transmit binary data through JSON APIs that only support text.
Data Storage
Store binary data in text-based databases or configuration files.
Security & Authentication
Encode certificates, keys, and other security-related binary data.
Mobile Development
Handle binary data in mobile apps for offline storage and caching.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data into a sequence of printable ASCII characters. It's widely used to encode data that needs to be transmitted over text-based protocols like email, HTTP, and JSON. The encoding increases the data size by approximately 33% but ensures compatibility with text-based systems.
When should I use Base64 encoding?
Use Base64 encoding when you need to transmit binary data through text-based protocols. Common scenarios include embedding images in HTML/CSS, sending file attachments via email, storing binary data in JSON APIs, and including certificates or keys in configuration files. It's particularly useful when the receiving system can only handle text data.
Is Base64 encoding secure?
Base64 encoding is not encryption and should not be used for security purposes. It's a simple encoding scheme that can be easily decoded by anyone. If you need to protect sensitive data, use proper encryption methods like AES or RSA. Base64 is designed for data transmission compatibility, not security.
What file types can I encode?
You can encode any file type using Base64, including images (JPG, PNG, GIF), documents (PDF, DOC), videos, audio files, and any other binary data. Our tool supports files up to 10MB in size. For larger files, consider using specialized tools or breaking them into smaller chunks.
How does Base64 encoding work?
Base64 encoding works by taking 3 bytes of binary data and converting them into 4 ASCII characters. The process uses a 64-character alphabet (A-Z, a-z, 0-9, +, /) to represent the binary data. If the input length is not divisible by 3, padding characters (=) are added to complete the encoding.
Can I use this tool on mobile devices?
Yes! Our Base64 encoder/decoder is fully responsive and works perfectly on all devices including smartphones, tablets, and desktop computers. The interface automatically adapts to your screen size, and file upload functionality works on all modern mobile browsers.
Why Choose Our Base64 Tool?
Real-time Processing
See results instantly as you type or upload files.
File Upload Support
Upload and encode/decode files up to 10MB.
Error Handling
Clear error messages for invalid input.
100% Free
No registration, no hidden costs, completely free.
Privacy First
All processing happens locally, your data stays private.
Mobile Friendly
Works perfectly on all devices and screen sizes.