JPG to ICO Converter
Windows shortcuts, desktop programs and the classic favicon.ico all expect an ICO file, yet a JPG, also called a JPEG, is often the only copy of a logo or photo you have on hand. This tool turns that JPG into a working ICO, with as many icon sizes as you choose packed into the one file. A JPG cannot hold transparency, so the icon keeps the picture's own background; for an icon with a clear background, use a PNG with the PNG to ICO converter instead.
Quick answer: Tick the icon sizes you want, drop in a JPG and select Generate ICO to save a real .ico file. A JPG has no transparency, so the picture's own background stays in every size, and a wide or tall photo is centered on a transparent square instead of being cropped.
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Most image formats up to 50 MB each
Your images never leave your device
Most image formats, up to 50 megabytes each Your images never leave your deviceHow to use the JPG to ICO
- Tick the sizes to include; 16, 32 and 48 pixels are preselected.
- Drop in your JPG, ideally square and cropped close to the subject.
- Select Generate ICO and save the ICO file, named after your JPG.
Features
- Seven sizes to choose from: 16, 24, 32, 48, 64, 128 and 256 pixels.
- A non-square JPG is fitted whole and centered, with transparent bars in the leftover space.
- No cropping and no added border around the picture.
- Picking several sizes also offers a ZIP with a separate PNG of each one.
What happens to a JPG that is not square?
Icons are square, so a wide or tall JPG has to be fitted somehow. This tool scales the whole picture so its longer side matches the icon size, centers it, and fills the gap above and below, or on either side, with transparent pixels. Nothing gets cut off, but a strongly rectangular photo ends up as a thin strip that is hard to make out at 16 pixels. For a fuller icon, crop the JPG to a square around the part that matters with the Image Cropper first, then convert the cropped file.
Why does a JPG icon show a box behind the image?
JPG cannot store transparency, so whatever background the photo or logo was saved with, very often plain white, becomes part of every icon size. On a white browser tab that box disappears into the page, but on a dark taskbar or a browser in dark mode it shows up as a solid square behind your mark. If you want only the shape to appear, you need a copy of the artwork with a transparent background saved as PNG, and the PNG to ICO tool will carry that transparency into the finished icon.
When do you still need an ICO file?
Modern browsers happily use PNG and SVG favicons, so plenty of websites no longer rely on ICO at all. It still earns its place in a few spots. Browsers and many other programs look for a favicon.ico at the root of a site when a page declares no icon of its own. The Change Icon dialog in Windows, used to customize shortcuts and folders, works with ICO files. Build tools for Windows desktop programs and installers also commonly ask for an .ico as the application icon.
When another icon page fits better
A JPG is the one case this page handles best. A PNG with a transparent background keeps its edges on that page, any other image type goes through the general converter, and a favicon pack for a website comes as one ZIP.
Frequently asked questions
Which sizes should I tick?
For a website favicon, the preselected 16, 32 and 48 pixels are enough. For a Windows program or shortcut, add 256 as well, since File Explorer uses that size for its largest icon views and would otherwise enlarge a smaller one.
Do I get the separate PNG sizes too?
The main download is always a single ICO file named after your JPG, with every size you ticked inside it. When you tick more than one size, a second button called Also download the PNG sizes (ZIP) appears after you generate the ICO and saves a separate PNG for each size.
My JPG is quite small. Will the icon be blurry?
When you drop the file, the tool warns you if a ticked size is larger than the picture, and any such size is scaled up, which softens it. The check runs only at that moment, so tick your sizes first. Start from a JPG at least as large as your biggest icon, ideally 256 pixels or more on its shorter side.
Do JPG compression artifacts show up in the icon?
Shrinking a photo to icon size hides most of them, but the blocky smudges a JPG leaves around text and sharp edges can still muddy a 32 or 48 pixel logo. If a cleaner original exists, such as a PNG or SVG export of the logo, start from that instead.
Will the ICO work on older versions of Windows?
Each size is stored inside the ICO as compressed PNG data, which Windows has read since Windows Vista. Windows XP and earlier expect an older uncompressed layout and may show a blank icon.
Is my JPG uploaded to build the icon?
No. Resizing the picture and packing the ICO both happen in your browser, and the finished file is created directly on your device.
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