Windows and browsers still expect favicons in ICO, a container format that packs several icon resolutions into a single file. This ICO converter builds that file for you: upload a PNG, JPG, or any other image, tick the sizes you want, and download a proper multi resolution .ico. The classic favicon set is 16x16, 32x32, and 48x48, all selected by default alongside 64x64, and you can add 128x128 or 256x256 for high DPI contexts. Everything is rendered on a canvas locally, which makes this a private favicon ico converter with no upload involved. If you've been hunting for a quick way to turn a png to ico, this does it in three clicks.
Drop any image up to 10 MB onto the upload zone. A square image works best, because every ICO entry is square and non square sources get stretched to fit each size.
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Tick the sizes to include
Use the Sizes to include checkboxes to pick from 16x16 through 256x256. The 16, 32, 48, and 64 pixel entries start checked, which covers browser tabs, bookmarks, and Windows shortcuts.
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Press Build ICO
The button label counts your picks, for example Build ICO (4 sizes). Each size is rendered to PNG, packed into one .ico container, and downloaded under your original filename with an .ico extension.
Why ICO Converter
Build multi-resolution Windows .ico files from any image.
Selectable sizes, pick exactly what you need.
All resolutions packed into a single ICO file.
Common questions
What sizes should my favicon ICO actually contain?
At minimum 16x16 for browser tabs and 32x32 for bookmark bars and high density tab rendering. Adding 48x48 covers Windows desktop shortcuts. Beyond that, 64x64 and up mainly help if the icon appears in large shortcut views, so include them when file size isn't a concern.
Can this ICO converter start from a JPG instead of a PNG?
Yes, any image your browser can display works as the source. Just remember that JPG has no alpha channel, so the icon will have a solid background. Start from a transparent PNG if you want the icon shape to float over the tab background.
How is a multi size .ico different from renaming a PNG?
A real .ico begins with a directory that lists every embedded resolution, letting Windows and browsers pull the best match for the context. A renamed PNG has no directory, so older software either refuses it or scales one bitmap badly. This tool writes the genuine container format.
Why does my ICO look blurry at 16x16?
Detailed artwork simply can't survive a shrink to 256 pixels total. The tool uses high quality smoothing when scaling, but fine lines and small text will always mush together at that size. Simplify the mark, thicken strokes, and check the smallest size before shipping.
Is converting an image to ICO online safe for an unreleased logo?
Here, yes, because the resizing and ICO packing happen on a canvas inside your browser. The logo never transfers to a server, so there's nothing sitting in an upload folder waiting to leak.
Do modern browsers still need an ICO favicon?
Current browsers happily accept PNG favicons declared in a link tag. ICO earns its keep as the fallback: browsers request /favicon.ico automatically when no tag is present, and various older clients and Windows integrations still expect the container. Shipping both is the safe play.
What bit depth does the generated ICO use?
Each entry is written as 32 bit with PNG compressed image data, which preserves the full alpha channel for smooth transparent edges. That's the same approach modern favicons from major sites use.
Does the tool convert jpg to ico with the right transparency handling?
It'll convert jpg to ico, but remember a JPG has no alpha, so the icon gets a solid background. Used as a jpeg to ico converter it still packs every size you tick into one .ico. If you want a transparent icon shape, start from a PNG instead.
Can this act as an svg to ico converter for a vector logo?
Yes. Drop a .svg and the svg to ico converter rasterizes it to each selected size before packing the .ico, so a vector mark comes out crisp at 16, 32, and 48 pixels. Starting from vector data, the small sizes look cleaner than shrinking a low-res raster would.
How do I convert image to icon files for a desktop app?
Upload any image, tick the sizes your app needs, and press Build ICO. As an image to icon maker it renders each size on a canvas and writes one container. A clean graphic beats a busy photo once it shrinks to 16 pixels, so simplify the mark first.
Can I convert photo to icon for a game or app shortcut?
You can convert photo to icon, though photos lose detail fast at icon sizes. Crop to a square with a strong focal point first, then build the ICO. A simple, high-contrast subject survives the shrink to 32 or 16 pixels far better than a full scene.
What formats can I convert image to ico from?
Any image your browser can open, PNG, JPG, WEBP, GIF, or SVG. The image to ico icon converter draws whatever you give it onto square canvases at your chosen sizes, then packs them. So you convert image to ico without worrying much about the source type.
Will this ico file converter make a real multi-resolution icon?
Yes. Unlike renaming a file, this ico file converter writes a proper ICO directory that lists every embedded size. As an ico icon converter it packs 32-bit entries with PNG data, so Windows and browsers pull the sharpest match for each context.
How do I turn a png to favicon files a browser will request?
Tick 16, 32, and 48, then Build ICO, and you convert png to favicon output named .ico that browsers fetch automatically at /favicon.ico. This png to favicon ico converter bundles all three sizes into that single file, which is exactly what the classic favicon slot expects.
Is this png to ico converter free with no upload?
It is. The png to ico converter online free of charge runs on a canvas in your browser, so the image never uploads. Pick your sizes, build, and download, with no account and no watermark on the icon.
Can I convert png to ico file online without desktop software?
Yes, that's all this is. As a png to ico file converter online it needs no install, and it does the same job whether you call it that or a png to icon file converter online. Everything happens in the tab, so you convert png to ico file online and the .ico lands in your downloads.
Is a png to icon file converter online different from an ICO builder?
Same thing, different words. A png to icon file converter online produces the .ico container that icons actually use, which is what this builder does. Icon file just means the ICO, so don't expect a separate format, the download is a standard multi-size .ico.
What's the quickest way to change png to ico online?
Drop the PNG, leave the default 16, 32, 48, and 64 sizes ticked, and press Build ICO. That's the whole flow to change png to ico online, and the file downloads under your original name with an .ico extension in a second or two.