Convert JPG to ICO, Free
Files convert instantly in your browser. 100% private, any file size, no account needed.
Drop your JPG file here
or click to browse. Any file size.
Conversion runs entirely in your browser. Your file never leaves your device.
How to convert JPG to ICO
ICO is the icon format used by Windows for program icons, folder icons, and website favicons. A single ICO file can contain multiple image sizes (16x16, 32x32, 48x48, 256x256) so Windows automatically uses the right size for each context. Converting a JPG photo or logo to ICO is the standard step for creating a favicon or a custom Windows icon.
BoltConverter converts your JPG to ICO entirely in your browser using WebAssembly. The converter produces a multi-size ICO file that includes the standard icon sizes for maximum compatibility. Your image never leaves your device.
Upload your JPG
Click the upload area or drag your JPG onto the converter.
Conversion runs in your browser
BoltConverter resizes and encodes the image into an ICO file with multiple embedded sizes using WebAssembly.
Preview the icon
A preview of the favicon or icon appears. Check it looks recognizable at small sizes.
Download the ICO
Click Download to save the .ico file. Use it as a favicon or Windows program icon.
Frequently asked questions
What sizes are included in the ICO file?
The output ICO contains multiple standard sizes: 16x16, 32x32, 48x48, and 256x256 pixels. Browsers and Windows will automatically pick the appropriate size for each context.
Can I use this to make a favicon for my website?
Yes. Download the ICO file and name it favicon.ico, then place it in the root directory of your website. Most browsers will pick it up automatically.
Does the JPG need to be square?
No, but non-square images will be stretched or cropped to fit the square icon format. For best results, crop your image to a square before converting.
Are my images kept private?
Yes. The conversion runs entirely in your browser. Your JPG is never uploaded to any server.
Can I convert a PNG to ICO instead?
BoltConverter also has a dedicated PNG to ICO converter if you are working with a PNG logo or image with transparent background.