Image ↔ Base64 Converter

The Image Base64 Converter transforms images to Base64 encoded strings and decodes Base64 data back to images. This is essential for embedding images directly in HTML, CSS, or JSON without external file dependencies.

Key Features:

• Bidirectional Conversion: Convert images to Base64 and decode back
• Multiple Formats: Supports PNG, JPEG, GIF, WebP, BMP, and SVG
• Data URL Support: Option to include or exclude data URL prefix
• Drag & Drop: Easy image uploading with drag and drop
• Image Preview: Visual preview of original and decoded images
• File Information: Display image dimensions, size, and format
• Export Options: Copy to clipboard or download as text file

Base64 Encoding:

• Data URLs: Complete format with MIME type (data:image/png;base64,...)
• Raw Base64: Just the encoded data without prefix
• Character Set: Uses standard Base64 alphabet (A-Z, a-z, 0-9, +, /)
• Padding: Proper padding with = characters for correct decoding

Use Cases:

• Email Templates: Embed images directly in HTML emails
• CSS Sprites: Include small images as data URLs in CSS
• API Responses: Send images as Base64 in JSON responses
• Offline Applications: Embed images without external dependencies
• Data Storage: Store images in databases as text
• Web Components: Self-contained components with embedded images
• Documentation: Include images in markdown or text files

Supported Image Formats:

• PNG: Lossless compression with transparency support
• JPEG/JPG: Lossy compression for photographs
• GIF: Animation and transparency support
• WebP: Modern format with excellent compression
• BMP: Uncompressed bitmap format
• SVG: Vector graphics format

Best Practices:

• Use Base64 for small images (under 50KB) to avoid bloating
• Consider file size increase (~33% larger than binary)
• Use data URLs for CSS background images and small icons
• Optimize images before converting to reduce Base64 size
• Cache Base64 strings to avoid repeated conversions
• Use appropriate image formats (PNG for graphics, JPEG for photos)

Technical Details:

• Encoding: Converts binary image data to ASCII text
• Size Impact: Base64 is approximately 33% larger than binary
• Browser Support: Universal support in all modern browsers
• Security: All processing happens client-side for privacy
• Performance: Instant conversion without server uploads

Tips:

• Use raw Base64 when you need just the encoded data
• Include data URL prefix for direct HTML/CSS usage
• Test decoded images to ensure proper conversion
• Consider image compression before Base64 conversion
• Use appropriate MIME types in data URLs
• Validate Base64 strings before using in production