Image to Base64 Converter
Convert images to Base64 data URIs
Image to Base64 Converter is a free online tool from BrowserUtils that convert images to base64 data uris. It runs entirely in your browser — your data never leaves your device. No account required.
How to use Image to Base64 Converter
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About Image to Base64 Converter
Free online image to Base64 converter. Upload an image and get a Base64-encoded data URI string for embedding in HTML or CSS. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
Image to Base64 Converter specs
- Runtime
- 100% client-side (browser)
- Built on
- HTML Canvas, FileReader, and the OffscreenCanvas API — all client-side image processing
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
Why would I convert an image to Base64?
Converting an image to a Base64 data URI lets you embed it directly in HTML or CSS without a separate file request. This is useful for small icons, logos, and email templates where reducing HTTP requests improves load performance.
Does Base64 encoding increase the image file size?
Yes, Base64 encoding increases the data size by approximately 33% compared to the original binary file. It is best suited for small images under 10 KB where the savings from eliminating an extra network request outweigh the size increase.
Is it safe to use the Image to Base64 converter with sensitive images?
Yes. The conversion runs entirely in your browser and your images are never uploaded to any server. The Base64 output stays on your device until you copy or save it.
What image formats can I convert to Base64?
You can convert any format the browser supports, including PNG, JPEG, GIF, WebP, and SVG. The resulting data URI includes the correct MIME type so browsers render it properly.
How do I use a Base64 data URI in CSS?
Set it as a background-image value like this: background-image: url(data:image/png;base64,...). This is commonly used for small UI icons and repeating patterns to avoid extra HTTP requests.
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