Base64 Encoder/Decoder
Encode and decode text to/from Base64 format. Perfect for data transmission, storage, and embedding text in various applications.
Toolspy's Base64 Encoder/Decoder is a versatile tool for converting text to and from Base64 format. Essential for developers, system administrators, and anyone working with data encoding, APIs, or web development. Our tool supports various encoding options and provides instant, secure conversion.
Key Features
- Bidirectional Conversion: Encode text to Base64 and decode Base64 to text
- URL-Safe Encoding: Support for URL-safe Base64 format
- Multiple Encodings: UTF-8, ASCII, and Latin1 support
- Line Break Options: Add line breaks for better readability
- File Upload: Process text files directly
- Real-time Validation: Instant feedback on Base64 validity
Common Use Cases
API Development
Encode authentication tokens, API keys, and request payloads
Data URLs
Create data URLs for embedding images and files in HTML/CSS
Email Attachments
Encode binary data for email transmission and storage
Configuration Files
Store encoded credentials and sensitive data in config files
Choose Mode
Select "Encode" to convert text to Base64 or "Decode" to convert Base64 to text.
Configure Options
Set encoding type, line breaks, and URL-safe options based on your needs.
Input Your Data
Type or paste text, or upload a file to process the content.
Get Results
Copy the result to clipboard or download it as a text file.
- • UTF-8 (default)
- • ASCII
- • Latin1 (ISO-8859-1)
- • URL-safe Base64
- • Standard Base64
- • URL-safe encoding
- • Line breaks (64 chars)
- • Padding control
- • Text files (.txt)
- • JSON files (.json)
- • XML files (.xml)
- • CSV files (.csv)
What is Base64 encoding used for?
Base64 encoding converts binary data to ASCII text, making it safe for transmission over text-based protocols like email, HTTP, and JSON. It's commonly used for API authentication, data URLs, and storing binary data in text formats.
When should I use URL-safe Base64?
Use URL-safe Base64 when the encoded data will be used in URLs, filenames, or anywhere that + and / characters might cause issues. It replaces + with - and / with _.
Why is Base64 data larger than the original?
Base64 encoding increases data size by approximately 33% because it represents every 3 bytes of binary data as 4 ASCII characters. This trade-off ensures compatibility with text-based systems.
Is Base64 encoding secure?
Base64 is encoding, not encryption. It's easily reversible and provides no security. Use it for data format conversion, not for protecting sensitive information.