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Base64 Image Converter

Convert images to Base64 strings and Base64 back to images. Drag & drop or paste to encode any image format instantly.

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Drop an image here or click to select

Supports PNG, JPG, GIF, SVG, WebP, ICO, BMP

Free Online Base64 Image Converter

This tool converts images to Base64-encoded strings and decodes Base64 strings back to images. Base64 encoding lets you embed images directly in HTML, CSS, or JavaScript without external file requests. Simply drag and drop your image or paste a Base64 string to convert.

How to Convert Image to Base64

  1. Drag and drop your image file onto the upload area, or click to browse
  2. The tool instantly encodes the image to a Base64 string
  3. Copy the Base64 string, Data URI, HTML tag, or CSS background snippet
  4. To decode, switch to "Base64 to Image" tab and paste your Base64 string

Frequently Asked Questions

What is Base64 image encoding?
Base64 image encoding converts binary image data into an ASCII text string. This allows images to be embedded directly in HTML, CSS, or JSON without requiring separate HTTP requests. The encoded string is about 33% larger than the original binary data, but eliminates the need for additional file downloads.
When should I use Base64 images?
Base64 images are best for small icons, logos, and UI elements under 10KB. They reduce HTTP requests and can improve initial page load for small assets. Avoid Base64 for large images as the encoded size is ~33% larger than the original, and large Base64 strings cannot be cached separately by the browser.
What image formats can be converted to Base64?
Any image format can be converted to Base64, including PNG, JPEG, GIF, SVG, WebP, ICO, and BMP. The resulting Base64 string includes the MIME type in the data URI prefix (e.g., data:image/png;base64,...), so the browser knows how to render it correctly.
Does Base64 encoding affect image quality?
No, Base64 encoding is lossless. It is simply a different representation of the same binary data. The decoded image is identical to the original. However, if you compress the image before encoding (e.g., JPEG compression), that compression quality applies regardless of Base64 encoding.

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