💻 Developer Tools

Image to Base64 Converter

Convert images to Base64 strings, data URIs, CSS backgrounds, and HTML img tags.

The Image to Base64 Converter is a completely free online tool that requires no sign-up or account. Convert images to Base64 strings, data URIs, CSS backgrounds, and HTML img tags. Instant results in your browser — no downloads, no limits.

Image to Base64 Converter
🖼
Drag & drop an image here
or click to browse
PNG, JPG, GIF, WebP, SVG, ICO — max 5 MB

What is Image to Base64 Converter?

The Image to Base64 Converter is a free online tool that transforms image files — including PNG, JPG, GIF, WebP, and SVG — into Base64-encoded data URI strings. Embedding images as Base64 in HTML, CSS, or JavaScript eliminates the need for separate HTTP requests and is commonly used for small icons, logos, and inline email images. The resulting data URI can be dropped directly into an <img> src attribute or CSS background-image property.

How to Use the Image to Base64 Converter

  1. Click Choose File or drag and drop your image onto the upload area.
  2. The tool instantly encodes the image and displays the Base64 data URI.
  3. Copy the full data URI string for use in HTML or CSS.
  4. Optionally, copy only the raw Base64 string without the data URI prefix.
  5. Preview the decoded image below the output to verify the result.

Frequently Asked Questions

What is a Base64 data URI?
A data URI is a scheme that allows you to embed file data directly in a document as a Base64-encoded string, formatted as data:[mediatype];base64,[data].
What image formats are supported?
The tool supports all common web image formats including PNG, JPEG, GIF, WebP, SVG, BMP, and ICO files.
Does encoding an image to Base64 increase its file size?
Yes, Base64 encoding increases the data size by approximately 33% compared to the original binary file, so it is best suited for small images like icons.
Can I decode a Base64 string back to an image?
Yes, paste the Base64 data URI into the decode field and the tool will render the image so you can verify and download it.

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