🔄 Choose Data Type
Text Encoding
Encode plain text to Base64 or decode Base64 to text
Image Encoding
Convert images to Base64 or decode Base64 to images
📝 Input Text
💡 Quick Examples:
📤 Base64 Output
🖼️ Upload Image
Click to upload or drag & drop an image
Supports: PNG, JPG, GIF, WebP, SVG (Max: 10MB)
🖼️ Image Preview
Image preview will appear here
📤 Base64 Output
📦 Batch Text Processing
Process multiple text strings at once. Enter one string per line.
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What is Base64 Encoding?
🔍 Understanding Base64
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It uses 64 characters (A-Z, a-z, 0-9, +, /) to encode data, making it safe for transmission over text-based protocols.
Each Base64 character represents 6 bits of data, and padding characters (=) are used to ensure the encoded string length is a multiple of 4.
🎯 Common Applications
- Embedding images in HTML/CSS
- Email attachments (MIME)
- API data transmission
- Configuration files and tokens
🛠️ Text Use Cases
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API Authentication: Encoding credentials for Basic Auth
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Configuration Data: Storing settings in text format
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Data URLs: Embedding small files in web pages
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JWT Tokens: Decoding JSON Web Token payloads
🖼️ Image Use Cases
- CSS background images without external files
- Email templates with embedded images
- JSON APIs with image data
- Mobile app icon and asset storage
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Frequently Asked Questions
What is the difference between Base64 and other encoding methods?
Base64 is specifically designed for encoding binary data into text format using only printable ASCII characters. Unlike URL encoding or HTML encoding, Base64 creates a fixed-size representation that's safe for text-based transmission.
Why does Base64 encoding increase file size?
Base64 encoding increases size by approximately 33% because it uses 4 characters to represent every 3 bytes of original data. This overhead is the trade-off for making binary data text-safe.
Can I use Base64 for large images?
While technically possible, Base64 is best for small images (under 100KB). Large images create very long strings that can impact performance and are harder to manage. Consider using regular image files for larger assets.
Is Base64 encoding secure?
Base64 is NOT encryption or security - it's just encoding. Anyone can easily decode Base64 strings. Never use Base64 alone to protect sensitive information; use proper encryption methods instead.
What image formats are supported?
Our tool supports all common web image formats including PNG, JPEG, GIF, WebP, and SVG. The output will maintain the original format information in the data URI.