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Image to Base64

Convert any image to a Base64-encoded string instantly in your browser. Embed images directly in HTML, CSS, or JSON without external file references.

Used 15.1K times today

Image to Base64

How to Use Image to Base64

  1. 1

    Upload your image

    Select or drag and drop an image file (JPEG, PNG, GIF, WebP, or SVG) into the tool.

  2. 2

    Copy the Base64 string

    The tool immediately outputs the full Base64 data URI. Click "Copy" to copy it to your clipboard.

  3. 3

    Use the Base64 in your project

    Paste the data URI as the src attribute in an <img> tag, or use the raw string in a CSS background-image.

Frequently Asked Questions

What is a Base64 image?
A Base64 image is a text representation of binary image data. It encodes the raw bytes as an ASCII string, allowing images to be embedded directly in HTML, CSS, or JSON files without separate file requests.
Does Base64 encoding increase file size?
Yes. Base64 encoding increases the data size by approximately 33%. It is best used for small icons or images where saving an HTTP request outweighs the size increase.
Is my image processed on a server?
No. Encoding is done entirely in your browser using the FileReader API. Your image data never leaves your device.

About Image to Base64

The Image to Base64 converter on Utilko encodes your images as text strings you can embed directly into HTML, CSS, or API payloads. This eliminates extra HTTP requests for small assets like icons, logos, and thumbnails, which can improve page load performance.

This tool is particularly useful for developers embedding images in email templates, data URIs in stylesheets, or JSON configuration files. All processing happens locally — no server, no upload, no data retention.

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