Convert PNG to ICO
Ethical Tube's free PNG to ICO converter turns PNG images into ICO, the format for Windows icons and website favicons. It runs entirely in your browser, so your images are never uploaded, and it's free with no sign-up or watermark.
Files are converted on your device and never uploaded.
- Price
- Free
- Uploads
- None, it runs on your device
- Sign-up
- Not needed
- Batch
- Unlimited files
- Output
- ICO, 16 to 256 px
- Install
- Nothing to install
How it works
How to convert PNG to ICO
Add your PNG files
Drop PNG files onto the converter, click to choose them, or paste from the clipboard. Add as many as you like.
Check the settings
Pick which icon sizes to include. The defaults cover browser tabs, bookmarks, and Windows.
Download your ICO icons
Each file gets its own download button as soon as it's ready. Download all saves everything in one ZIP file.
The formats
PNG and ICO at a glance
What is a PNG file?
PNG is a lossless image format, so it keeps every pixel exactly as it was saved. It supports transparent backgrounds, which makes it the usual choice for logos, screenshots, and graphics with sharp edges or text. A photo saved as PNG is often several times larger than the same photo as a JPG. It opens in every web browser, Windows Photos, macOS Preview, iPhone and Android galleries, and editors like Photoshop, GIMP, and Figma.
What is an ICO file?
ICO is the Windows icon format, and it's also the classic format for favicons, the small icons shown in browser tabs. One ICO file can hold the same icon at several sizes, such as 16, 32, and 48 pixels, so each place it appears gets a sharp version. It opens in Windows, all browsers (as a favicon), macOS Preview, GIMP, and icon editors.
Good to know
What changes when you convert PNG to ICO
- Both formats are lossless, so every pixel is kept exactly.
- The icon is saved at 16, 32, 48, 64, 128, and 256 pixels in one file, skipping sizes larger than the original. Non-square images are centered on a transparent square.
- Metadata such as the camera model, date, and GPS location isn't copied to the new file, so you don't share your location by accident.
- Very large images, around 100 megapixels or more, can exceed what the browser allows, especially on phones.
FAQ
Questions, answered
Is this PNG to ICO converter free?
Yes. It's completely free, with no sign-up, no watermark, and no limit on how many files you convert. It costs Ethical Tube nothing to run, because the conversion happens on your own device rather than on a server.
Are my files uploaded anywhere?
No. The conversion runs inside your browser with the browser's built-in image codecs plus small WebAssembly encoders, so your files never leave your device. Once the page has loaded, it even works offline.
Does converting PNG to ICO lose quality?
No. ICO is lossless, so the converted image has exactly the pixels of the PNG.
Can I convert several PNG files at once?
Yes. Add as many as you like. They're converted one after another, and you can download each ICO file as soon as it's ready or all of them in one ZIP file.
Does it work on iPhone, Android, Mac, and Windows?
Yes. It works in Chrome, Edge, Firefox, and Safari, on computers, iPhones, and Android phones.
What can open an ICO file?
Windows, all browsers (as a favicon), macOS Preview, GIMP, and icon editors.
Is there a file size limit?
There's no upload limit because nothing is uploaded. The practical limit is your device's memory: everyday files are fine, and most computers handle images up to about 100 megapixels.
Keep converting
Related converters
Start your first recording in seconds
It's free, it runs in your browser, and there's no account to create.
Start recording for free