ToolHive

Image to Base64 Converter

Quickly convert image files into Base64 data URIs for direct HTML/CSS embedding.

image to base64base64 to imagedata uri generator

Interactive Converter

Click to upload image

Image preview will appear here

Intro

Avoid extra HTTP requests by embedding small images directly into your code using Base64 URI format.

How to use

  1. Upload / Paste
    Drop an image file or paste a Base64 string.
  2. Convert
    Instantly see the Base64 output or image preview.
  3. Copy
    Copy the Data URI syntax or download the image.

Examples

Convert Image
Encode a small PNG image to Base64.
Input
Upload a small icon.png
Output
data:image/png;base64,iVBORw0KGgo...
Use in CSS
Generated Base64 string ready for CSS background-image.
Input
Upload a small icon (e.g., 16x16 PNG)
Output
background-image: url(data:image/png;base64,iVBOR...);

FAQ

What is Base64 image encoding?

Base64 encoding converts binary image data into an ASCII text string. This allows images to be embedded directly in HTML, CSS, or JSON without separate file references.

When should I use Base64 images?

Base64 images are useful for small icons, email templates, and single-file HTML documents. For larger images, separate files with CDN delivery are more efficient.

Does Base64 encoding increase file size?

Yes, Base64-encoded images are approximately 33% larger than the original binary file. This trade-off is acceptable for small assets where reducing HTTP requests matters more.

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