Image to Base64 Converter

Convert images to Base64 encoded strings instantly. Get data URI format ready to embed in HTML, CSS, or JSON files with one click.

or drop images here or paste

Base64 String
Data URI Format

What is Image to Base64 Converter?

Image to Base64 Converter transforms your images into Base64 encoded strings instantly. Convert JPG, PNG, GIF, or WebP images to Base64 format for embedding directly in HTML, CSS, JSON, or email templates. This online Base64 encoder eliminates the need for external image hosting by converting images to text strings that browsers can decode and display.

How to Convert Images to Base64 String

Upload any image file to generate its Base64 representation immediately. The converter displays both the raw Base64 string and the complete data URI format. Copy the Base64 string with one click to paste into your code. Perfect for embedding small icons, logos, or graphics directly in CSS background images, HTML img src attributes, or JSON API responses without separate image files.

Base64 String vs Data URI Format

Base64 strings are the pure encoded data, while Data URI format includes the complete syntax for browser rendering. Use raw Base64 for APIs and databases that expect encoded binary data. Use Data URI format for direct embedding in HTML and CSS - it includes the image MIME type prefix like data:image/png;base64, allowing browsers to decode and display images inline without external requests.

When to Use Base64 Image Encoding

Base64 encoding is ideal for small images like icons, logos, and UI elements under 10KB. Embed Base64 images in HTML emails to ensure graphics display without blocked external content. Use Base64 for CSS background images to reduce HTTP requests and improve page load speed. Perfect for single-page applications, offline-capable web apps, or any scenario where you need self-contained HTML files without external dependencies.

Understanding Base64 File Size Increase

Base64 encoding increases file size by approximately 33% compared to the original binary image. A 10KB PNG becomes roughly 13.3KB when Base64 encoded. This tool displays both original and encoded sizes so you can evaluate the trade-off between convenience and file size. For large images, traditional image hosting is more efficient. For small assets, the inline embedding benefit outweighs the size increase.