Image to Base64 Converter

Convert images to Base64 encoded strings for embedding in HTML, CSS, or JavaScript. Supports PNG, JPEG, GIF, WebP, SVG, and more.

Drop an image here or click to upload

Supports PNG, JPEG, GIF, WebP, SVG, BMP, ICO (max 5MB)

All conversion happens in your browser. No images are uploaded to any server. Base64 encoding increases file size by approximately 33%.

How to Use This Tool

  1. 1

    Upload an image

    Drag and drop an image file or click the upload area to select a file from your device.

  2. 2

    Choose output format

    Select Data URI (includes the data:image prefix) or Raw Base64 (just the encoded string).

  3. 3

    Copy the result

    Click Copy to copy the base64 string, or use the quick buttons to copy as HTML img tag or CSS background.

  4. 4

    Use in your project

    Paste the base64 string directly into your HTML, CSS, or JavaScript code. No external image hosting needed.

Frequently Asked Questions

What is Base64 encoding?
Base64 is an encoding scheme that converts binary data (like images) into ASCII text. This allows you to embed images directly in HTML, CSS, or JSON without separate image files.
Why does Base64 increase file size?
Base64 encoding converts 3 bytes of binary data into 4 ASCII characters, resulting in approximately 33% larger output. This trade-off eliminates the need for separate HTTP requests.
When should I use Base64 images?
Use Base64 for small images (icons, logos under 10KB), email templates, single-file HTML documents, or when you want to reduce HTTP requests. Avoid it for large images.
Is my data secure?
Yes. All conversion happens entirely in your browser using the FileReader API. No images are uploaded to any server.