Sized for ICO automatically
Large PNGs are scaled to fit 256 px, the maximum an ICO allows, so the file is always valid — no separate resize step.
PNG to ICO — turn a PNG into a favicon, free and in your browser
Drop a PNG and get a clean .ico for your site tab, a Windows app, or a desktop shortcut. Transparency is kept and oversized images are scaled to 256 px for you. No signup, no watermark.
Drop PNG files to convert to ICO
PNG · up to 50 files · 100 MB each
- Free
- Instant
- No signup
How to convert PNG to ICO in three steps
Drop your PNG files
Add a single logo or a batch of up to fifty. A square PNG makes the sharpest icon.
Let it size to 256
Anything larger than 256 px is scaled down to fit automatically. Smaller PNGs are kept exactly as they are.
Download your ICO
One file saves on its own; a batch arrives as a ZIP, each image renamed with a .ico extension.
What an ICO file is for — and why PNG is the right source
The .ico format is the icon container Windows and web browsers have leaned on for decades. It is what a browser fetches from /favicon.ico, what File Explorer paints beside a program, and what a desktop shortcut points at. A PNG is the ideal starting point because it already carries the crisp edges and transparency an icon needs — converting it to ICO simply repackages those pixels into the container those places expect.
The format enforces one rule: a single ICO image tops out at 256×256 pixels. Feed it a 1024 px export and the file comes out malformed. AnyResizer scales anything larger down to fit 256 px automatically, so the icon is valid everywhere without you reaching for a resize tool first. Transparency rides along too — the see-through corners of a rounded logo stay see-through.
This tool writes a single-image .ico, which is all most people need for a favicon or a shortcut. If you want one .ico that bundles several sizes — 16, 32, 48 px and up — for pixel-perfect rendering at every scale, that is the job of a dedicated favicon generator. Everything here runs in your browser: the PNG is decoded and re-packed on your own machine.
Features
Transparency preserved
The alpha channel carries over, so a logo with rounded or cut-out edges keeps its transparent background in the icon.
Runs in your browser
The PNG never leaves your device. Open the Network tab during conversion and you will see that nothing is sent.
Built for turning PNG logos into icons
- Valid .ico every time — clamped to the 256 px format limit
- Transparent corners and cut-outs survive the conversion
- Batch a whole folder of logos into icons in one drop
- One malformed PNG never stops the rest of the queue
When converting PNG to ICO helps
Adding a favicon to a website
Browsers request /favicon.ico by default. Convert your PNG logo and drop the .ico at your site root for an instant tab icon.
Giving a Windows app an icon
Desktop programs and installers expect an .ico. Convert a PNG mark and point your build or shortcut at the result.
Custom desktop shortcuts
Windows lets you swap a shortcut's icon but only accepts .ico files. Convert any PNG and choose it in the shortcut properties.
Branding an internal tool
Dashboards and admin panels often want a favicon. A quick PNG-to-ICO gives the browser tab your logo instead of a blank mark.
Electron and packaged apps
Many desktop app frameworks read a Windows icon from an .ico file. Convert your PNG artwork to satisfy the build config.
Replacing a folder icon
Personalize a project or drive folder with your own mark by converting a PNG to .ico and setting it in the folder's properties.
Tips for sharp PNG-to-ICO icons
- Tip 1:
Start from a square PNG. A non-square logo ends up letterboxed inside the icon or looks off-center.
- Tip 2:
Keep the design simple. At 16 or 32 px in a browser tab, fine detail and small text disappear.
- Tip 3:
Use a transparent PNG background unless you actually want a solid square tile behind the icon.
- Tip 4:
For pixel-perfect rendering at every size, generate a multi-resolution .ico rather than a single image.
PNG to ICO — frequently asked
How do I convert PNG to ICO?
Drop your PNG onto the dropzone. If it is larger than 256 pixels it is scaled down to fit that limit automatically. Click Convert and the .ico downloads from your own device.
What size will the ICO be?
Up to 256×256 pixels, which is the largest a single ICO image can hold. A PNG smaller than that keeps its size; a larger one is scaled down to fit. That range covers favicons and app icons.
Does the ICO keep transparency?
Yes. ICO supports an alpha channel, so a PNG with a transparent background stays transparent in the icon. A rounded logo will not gain a white box behind it.
Can I make a multi-size favicon?
This tool writes a single-image .ico, which works for most favicons and shortcuts. If you need one file bundling 16, 32, and 48 px versions for crisp rendering at every scale, use a dedicated favicon generator instead.
Where do I put the .ico for a website?
Upload it to your site root as favicon.ico, or point a link rel="icon" tag at it in your HTML head. Browsers pick it up for the tab and bookmarks automatically.
Are my files uploaded to a server?
No. The PNG is decoded and repacked into ICO inside your browser using WebAssembly. Nothing leaves your device, and nothing is stored. You can confirm it in your browser's Network tab.
Can I convert several PNGs at once?
Yes. Drop up to 50 PNGs in one go. Each is converted and sized independently, and the results download together as a single ZIP of .ico files.
Why did my large PNG get smaller?
The ICO format cannot store an image wider or taller than 256 pixels. To keep the file valid, anything above that is scaled down to fit, with the aspect ratio preserved.
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Need a favicon from a PNG?
Drop your logo here and download a clean .ico for your site, app, or shortcut in seconds.