What is Base64 image encoding?

Base64 image encoding converts binary image data into an ASCII text string. This allows you to embed images directly in HTML, CSS, or JSON without needing a separate image file.

What image formats are supported?

All standard web image formats are supported including PNG, JPEG, GIF, WebP, SVG, BMP, and ICO.

Is my image data safe?

Yes. All conversion happens locally in your browser. Your images are never uploaded to any server.

Why is the Base64 string larger than the original image?

Base64 encoding increases the data size by approximately 33%. This is because it represents binary data using only 64 ASCII characters, which is less efficient than raw binary.

Image to Base64 Converter

Convert any image to a Base64 encoded string or data URI for embedding in HTML and CSS.

Click or drag & drop an image

How to Use Image to Base64 Converter

Step 1

Click the file input or drag and drop an image.

Step 2

The tool instantly converts the image to a Base64 string.

Step 3

Copy the raw Base64 string or the full data URI.

Step 4

Use the encoded string directly in your HTML or CSS.

Features

Supports PNG, JPEG, GIF, WebP, SVG, BMP, and ICO formats.

Generates both raw Base64 and data URI strings.

Shows file size comparison between original and encoded.

One-click copy to clipboard for both formats.

Completely private — no data leaves your browser.

FAQ

: Base64 image encoding converts binary image data into an ASCII text string. This allows you to embed images directly in HTML, CSS, or JSON without needing a separate image file.
: All standard web image formats are supported including PNG, JPEG, GIF, WebP, SVG, BMP, and ICO.
: Yes. All conversion happens locally in your browser. Your images are never uploaded to any server.
: Base64 encoding increases the data size by approximately 33%. This is because it represents binary data using only 64 ASCII characters, which is less efficient than raw binary.