PNG to ICO
Turn a PNG logo into a complete favicon set — .ico, every PNG size, manifest and HTML — without uploading it anywhere.
Favicon package
- favicon.ico16 + 32 + 48 in one file
- favicon-16x16.pngBrowser tab
- favicon-32x32.pngTaskbar / tab @2x
- favicon-48x48.pngWindows shortcut
- favicon-64x64.pngHiDPI tab
- favicon-128x128.pngChrome Web Store
- apple-touch-icon.pngApple touch icon
- favicon-192x192.pngAndroid / PWA
- favicon-512x512.pngPWA splash
- site.webmanifestPWA / Android
What this tool does
It turns a PNG image into a favicon package: a multi-size favicon.ico plus the PNG sizes, web manifest and HTML snippet that browsers, Android and iOS look for.
About PNG
PNG is the lossless raster format of the web: every pixel is stored exactly, with an optional alpha channel for transparency. It was designed in 1996 as a patent-free replacement for GIF and is supported by literally everything that shows images. It is good for screenshots, logos, icons, UI graphics, anything with sharp edges, flat colour or text, and anything that needs a transparent background; less good for photographs — a photo saved as PNG is typically 5–10× larger than the same photo as a good-quality JPEG with no visible benefit. Universal: every browser, OS, editor, office suite and messaging app since the late 1990s.
About ICO
ICO is the Windows icon container: one file holding the same image at several sizes (16, 32, 48 px…), so the system can pick the right one. It is what browsers still look for at /favicon.ico, and what Windows uses for program and shortcut icons. It is good for favicons and Windows application icons — nothing else; less good for any other use; it is a container, not a general image format. Browsers and Windows; most image editors can open but not all can save it.
What changes going from PNG to ICO
- Transparency is kept. Both formats support an alpha channel.
- Metadata: EXIF (camera, date, GPS) is not carried over — the browser decodes pixels, not tags. That is a privacy plus for sharing and a minus if you rely on dates in the file.
What you get
A proper multi-size favicon.ico (16, 32 and 48 px inside one file) plus the PNG sizes, web manifest and HTML snippet modern browsers and phones want, zipped. Start from a square PNG with transparency of at least 256×256; non-square images are padded, not stretched.
How to make a favicon from PNG
- Drop the PNG file on the panel above or click to choose it.
- Check the preview of each size; non-square images are padded, not stretched.
- Download. The file is named after the original with a
.icoextension (inside a ZIP with the PNGs and HTML).
Frequently asked questions
Is my PNG file uploaded?
No. The page is static and has no upload endpoint; your browser does the work on your own device and the result is saved straight back to your disk. The site's Content-Security-Policy only allows it to talk to its own origin, so it cannot send your file anywhere even by accident. Load the page, disconnect from the internet, and it still works.
Does PNG to ICO lose quality?
The icon sizes are rendered from your image with high-quality downsampling; at 16 px any image loses detail, which is why simple, bold logos make the best favicons.
Will transparency survive?
Yes — ICO supports an alpha channel, so transparent areas of the PNG stay transparent in the output. Icons with transparent corners render properly in tabs and on the desktop.
Is it free? Any limits or watermark?
Free, no account, no watermark, no daily quota. Because nothing runs on our servers there is nothing to meter. The only limits are your device's memory — anything up to roughly 50 megapixels is fine on a modern phone or laptop.
Can I do several files at once?
One file at a time at the moment — drop the next one as soon as you have downloaded the first. Batch processing with a ZIP in and out is planned.
Does it work on my phone?
Yes — iPhone, iPad and Android browsers all run it. Large files take a few seconds longer on a phone than on a laptop.