Base64 Image Encoder

About Base64 Image Encoding

Convert images to Base64 encoded strings for embedding directly in HTML, CSS, JavaScript, or for use in APIs and data storage. Base64 encoding transforms binary image data into ASCII text, allowing images to be included inline without external file references.

Features

• Encode any image format to Base64
• One-click copy to clipboard
• Multiple output formats (Base64, Data URI, CSS, HTML)
• Batch encode multiple images at once
• Real-time preview of images
• File size information
• Download encoded strings as text files
• Supports PNG, JPEG, WebP, GIF, SVG, and more

Common Use Cases

Base64 encoding is useful for embedding small images directly in HTML/CSS to reduce HTTP requests, storing images in databases or JSON, including images in email templates, using images in API responses, creating self-contained HTML documents, and bypassing CORS restrictions in certain scenarios.

Output Formats Explained

• Base64 String Only: Pure Base64 encoded data without any prefix
• Data URI: Complete data URL ready for src attributes (data:image/png;base64,...)
• CSS Background: Ready-to-use CSS background-image declaration
• HTML Image Tag: Complete <img> tag with data URI