Convert JPG to ICO
To convert JPG to ICO, drop your JPG into the converter on this page and press Convert to ICO. Your browser fits the image into the standard icon sizes and packs them into one .ico file locally, so the picture never leaves your machine.
Runs in your browser. Your file never leaves your device.Drop your JPG hereChoose a JPG to convert
It becomes a ICO right in your browser, up to 100 MB
Your file never leaves your device
Works in airplane mode. See the proof
Limits, published exactly
| Where it runs | In your browser. The file never leaves your device. |
|---|---|
| Free conversions | Unlimited. No account, no ads, no queue, no watermark. |
| Max file size, free | 100 MB |
Why convert JPG to ICO?
A favicon is the little image in a browser tab, and the web still expects it as an .ico, a format that holds the same picture at several pixel sizes so the system can pick the crisp one for a tab, a bookmark or a pinned shortcut. If your logo or mark only exists as a JPG photo, converting it is the last step before wiring up a site favicon. A roughly square JPG works best for this. Doing the conversion in the browser keeps an unreleased brand image off the favicon-generator services that would otherwise collect it.
What is JPG?
JPG (or JPEG, for the Joint Photographic Experts Group that standardized it in 1992) is the most widely supported image format ever shipped. It uses lossy DCT compression tuned for photographs, which buys small files at the cost of discarding fine detail, and it has no transparency support. Practically everything that can open an image can open a JPG.
What is ICO?
ICO is the Windows icon container, and the format browsers still expect for a favicon. One .ico holds the same picture at several sizes, so the system can pick the right one for a tab, a taskbar, or the desktop. Building one means resizing a source image to those standard sizes and packing them together.
Quality and what to expect
The JPG is decoded and fitted, aspect ratio preserved and centered with transparent margins, into six standard icon sizes of 16, 32, 48, 64, 128 and 256 pixels, each stored as a PNG and packed into a single .ico, the modern PNG-in-ICO favicon that every current browser and operating system reads. Start from a square, simple image: a busy photo or fine text turns muddy at 16 pixels, and a JPG already carries some compression softening that the tiny sizes will not hide. A non-square source is centered rather than stretched, so expect transparent space around it instead of distortion.
JPG to ICO FAQ
What sizes go into the .ico?
Six squares, from 16 by 16 up to 256 by 256, all packed into one file so the browser or system can pick the right one for a tab, bookmark or shortcut.
Does my JPG need to be square?
Ideally yes. A square image fills each icon cleanly, while a rectangular one is centered with transparent padding so it is not stretched, leaving some empty space around it.
Will a small favicon look crisp?
Keep the source simple. At 16 pixels fine detail and thin text get muddy, and a JPG already has some compression softening, so a clean, bold mark reads best.
Is my image uploaded to make the icon?
No. The JPG is resized and packed into the .ico by your own browser, so a logo or photo is never sent to a favicon service or any server, ours included.