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Image to Base64

LOCAL · Browser-Only

Convert images to Base64 encoded strings for embedding in code

Drop an image here or browse

PNG, JPG, GIF, SVG, WebP, BMP, ICO, TIFF, AVIF

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What is Image to Base64?

Free online image to base64 converter to encode any image file (PNG, JPG, GIF, SVG, WebP) into a Base64 data URI string you can embed directly in HTML, CSS, or JavaScript.

Convert a PNG to base64, a JPG to base64, or an SVG to base64 and drop the result into an img src attribute, a CSS background-image, or an email template. Embedding small images inline this way removes a separate file request, which can speed up icons and logos. Upload your image and get both the raw Base64 string and a ready-to-use data URI with the correct MIME type prefix. Everything runs in your browser, so your images never leave your device. No signup required.

How to Use Image to Base64

1Click the upload area or drag and drop an image file (PNG, JPG, GIF, SVG, WebP)
2Wait for the image to be processed (happens instantly in your browser)
3Copy the Base64 string or the complete data URI
4Paste the data URI into your HTML img tag, CSS background, or JavaScript code

Frequently Asked Questions

What is a Base64 data URI for images?

A Base64 data URI is a way to embed image data directly in HTML, CSS, or JavaScript as a text string instead of linking to a separate image file. The format is 'data:image/png;base64,iVBOR...' which the browser decodes and displays as an image.

When should I use Base64-encoded images?

Base64 encoding is best for small images (under 10KB) like icons, logos, and simple graphics. For larger images, using separate image files is more efficient because Base64 encoding increases the data size by about 33% and prevents browser caching.

What image formats are supported?

This tool supports PNG, JPEG, GIF, SVG, and WebP image formats. Simply upload your image file and the tool will automatically detect the correct MIME type and generate the corresponding Base64 data URI.

How do I use a Base64 image in CSS?

Copy the full data URI and use it as the value of a background-image property, for example background-image: url('data:image/png;base64,...'). This embeds the image directly in your stylesheet so the browser does not request a separate file.

Are my images uploaded anywhere when I convert them?

No. The encoding happens entirely in your browser using JavaScript. Your image file is read locally and converted to Base64 without ever being sent to a server, so it is safe for logos, screenshots, and private graphics.

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Keep reading: HTML Cheat Sheet and html entities reference. Doing this in code instead? See the utility endpoints.

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