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Image to Base64 Encoder
Convert images to Base64 data URI strings. Drag and drop or upload PNG, JPG, GIF, SVG, or WebP files. Everything runs locally in your browser.
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Drop an image here or click to browse
Supports PNG, JPG, GIF, SVG, WebP — Max 10 MB
.png.jpg.gif.svg.webp
Image Preview
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Base64 Size
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What is Base64 Image Encoding?
Base64 image encoding converts binary image data into a text string that can be embedded directly in HTML, CSS, or JavaScript. The resulting data URI follows the format data:image/png;base64,iVBOR...
When to use Base64 images: Small icons and UI elements (under ~5 KB), email HTML templates where external images may not load, single-file HTML documents, and reducing HTTP requests for tiny assets.
Trade-offs: Base64 encoding increases file size by approximately 33%. For images larger than a few kilobytes, serving them as separate files is usually more efficient since browsers can cache them independently.
Base64-encoded images can be embedded directly in HTML or CSS, eliminating extra HTTP requests. This is useful for small images like icons, logos, and UI elements. It simplifies deployment since everything is in one file.
Does Base64 encoding increase image size?▼
Yes, Base64 encoding increases data size by approximately 33%. However, when gzip compression is applied (standard on web servers), the actual transfer size difference is much smaller, often just 5-10% larger.
When should I NOT use Base64 images?▼
Avoid Base64 for large images (over 10KB) as it increases HTML/CSS file size, prevents browser caching of individual images, and blocks page rendering. Use regular image files for photos and large graphics, and Base64 only for small icons and sprites.
Keyboard Shortcuts
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