UltKit

Image to ICO Converter

Make a favicon.ico or a Windows icon from whatever picture you have: a logo PNG, an SVG from your designer, a JPG from a brand kit or even a phone photo. The output holds several sizes. Below: which source works best and which other icon files each platform expects.

Image Converter

or drop JPG, JPEG, JPE … files here ·

Max 95 MB per file· Up to 20 files· Deleted after 30 minutes

Output

Files are processed on our servers and deleted after 30 minutes.

How to use this tool

  1. 1

    Pick the cleanest source you have

    Upload the image you want as the icon, ideally a square logo or symbol at 256 × 256 px or larger.

  2. 2

    Leave Icon sizes on All

    Under Advanced settings, Icon sizes starts at All sizes (16–256). Pick a single size only if a program asks for exactly one.

  3. 3

    Convert and test

    Press Convert to ICO, download the file and look at it in a browser tab or on the desktop before you publish it.

Answer

How do I turn an image into an ICO icon?

Upload a square image of at least 256 × 256 px, keep Icon sizes on All sizes (16–256) and press Convert to ICO. You get one file holding 16, 32, 64, 128 and 256 px versions, ready to use as favicon.ico or as a Windows shortcut icon.

Image to ICO: which source picture to start from

ICO is Microsoft's icon container, as old as Windows itself. It does not store one picture but a small directory of them, and since Windows Vista the largest entry, 256 px, may be PNG-compressed. Browsers adopted the format in 1999, when Internet Explorer 5 began requesting /favicon.ico from every site.

Because the converter scales your picture down to as little as 16 px, the source decides the result far more than any setting. Rank what you have before you upload, and crop it square first if it is wide; the crop image tool sets a 1:1 frame in a few seconds.

  1. Vector logo (SVG, EPS, AI)

    Rasterized fresh at every size, so edges stay crisp. Best choice when your designer can send one.

  2. Transparent PNG or WebP

    Keeps the see-through background the tab bar shows through. Start from 256 px or more.

  3. JPG, HEIC or a screenshot

    Works, but the square background travels with it. Fill or crop it so the corners look deliberate.

Where each platform looks for its icon file

1:1

32 × 32 px

favicon.ico (browser tab)

16 and 32 px are drawn in tabs and bookmarks; the ICO from this page covers both

1:1

256 × 256 px

Windows shortcut or .exe

Large icon views and high-DPI screens pick the 256 px entry

1:1

180 × 180 px

apple-touch-icon.png

PNG, not ICO; used when someone adds the site to an iPhone home screen

1:1

512 × 512 px

Web app manifest icon

PNG listed in manifest.json, alongside a 192 px version, for installable web apps

ANY I

Any image

This tool accepts common image formats, including JPG, PNG, WebP, HEIC, GIF, BMP and TIFF. The format is detected automatically from the file, so you do not need to know what kind of image you have.

Any image converter

ICO

Windows icon

ICO is the Microsoft icon format used for Windows program icons and website favicons. One .ico file can contain several images at different sizes, such as 16×16, 32×32, 48×48 and 256×256 pixels, so the system can pick the best fit. Each image can be stored as a bitmap or as PNG data and supports full alpha transparency. ICO is not meant for photos or large artwork. Browsers, Windows and most icon editors can read it.

Compression
Lossless
Transparency
Yes
Animation
No
Introduced
Microsoft
ICO converter

People convert an arbitrary image to ICO because a browser tab, a Windows shortcut or an installer expects one .ico file and the only artwork at hand is a logo, a screenshot or a photo in some other format; extracting a PNG from an ICO is the reverse, artwork recovery.

The 16 px legibility test before you convert to ICO

At 16 × 16 px an icon has 256 pixels in total. A full wordmark becomes a gray smear; a single bold letter or symbol survives. Before converting, shrink your source to 16 px in any viewer and ask whether you would recognize it in a row of 30 open tabs.

Contrast matters as much as shape. Tabs sit on light and dark browser themes, so a black logo on a transparent background can vanish in dark mode. A thin light outline or a solid rounded square behind the symbol keeps it visible on both. For macOS app bundles you need ICNS instead; PNG to ICNS builds that file from the same artwork.

Image to ICO questions

Which image formats can become an ICO on this page?

Any image the converter reads: PNG, JPG, SVG, WebP, AVIF, HEIC, GIF, BMP, TIFF, PSD and camera RAW among them. A transparent PNG or an SVG gives the cleanest edges; a JPG works but brings its rectangular background along.

Is favicon.ico enough, or do I need other icon files too?

The .ico covers browser tabs and bookmarks everywhere. iPhones and iPads look for a 180 × 180 px PNG named apple-touch-icon, and Chrome only offers to install a site as an app when its web manifest lists 192 and 512 px PNG icons.

Does Windows need a 48 px image inside the ICO?

File Explorer's medium icon view draws icons at 48 px. When the file has no 48 px entry, Windows scales the next larger one, here the 64 px image, which usually looks fine for bold artwork. Fine line work can turn soft.

Can one ICO show different artwork at 16 px and at 256 px?

The format allows it, and system icons often use a simplified drawing for the smallest sizes. This converter scales one picture to every size. If your 16 px version needs its own drawing, export that artwork separately and convert it with Icon sizes set to 16 px.

How do I check that my icon reads at 16 px before converting?

Shrink it to 16 px in any editor and view it at 100%. If you cannot tell what it is, cut detail: drop the tagline, keep the initial or symbol, and thicken thin strokes.

Where should favicon.ico be uploaded on my website?

Put it in the site root so it answers at /favicon.ico, because browsers request that address even when no tag points to it. A link tag with rel="icon" in the page head lets you place it elsewhere.