What is an ICO file and where is it used?

ICO is the icon format used by Windows (application, desktop and shortcut icons) and by browsers as a favicon. A single ICO can embed several sizes - 16, 32, 48, 64, 128, 256 - and the OS or browser picks the best frame for each context instead of stretching one size.

Can I convert SVG directly to ICO?

Yes. SVG input is supported and renders sharply at every embedded size, which is the cleanest way to build a multi-size icon set from vector art.

Is there a file size or image count limit?

There is no artificial cap. The practical limit is your device memory; a folder of icons converts in seconds.

Icon Converter
PNG/SVG → ICO

Convert PNG and SVG images to professional ICO icons. Custom sizes, multi-size ICOs, and privacy-first processing directly in your browser.

Powerful Features

Everything you need for professional image format conversion

Multi-Format Support

Convert PNG and SVG into ICO format. SVG vectors render crisply at any size.

Custom Sizes

Choose from presets (16, 32, 48, 64, 128, 256) or generate multi-size ICOs in one file.

Privacy-First

All processing happens locally in your browser. No uploads. Your files never leave your device.

Simple Three Steps to Convert

Our intuitive workflow makes icon conversion effortless

1
Upload Images
Select or drag & drop PNG/SVG files. Batch upload supported.
2
Choose Sizes
Pick a single size or generate a multi-size ICO for maximum compatibility.
3
Download ICO
Get your ICO instantly. Works offline after page load.

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Frequently Asked Questions

Everything you need to know about our icon converter

What is ICO format?: ICO is the icon format used by Windows and websites (favicons). A single ICO can contain multiple sizes and transparency.
Which input formats are supported?: PNG and SVG inputs are supported. SVGs render sharply across sizes; PNGs preserve transparency.
Can I generate a multi-size ICO?: Yes. Combine multiple sizes (e.g., 16, 32, 48, 64, 128, 256) into a single ICO for best compatibility.

Convert PNG to ICO in Your Browser - Free Icon & Favicon Generator

Every Windows application, browser tab, and desktop shortcut needs an ICO icon, and most modern design workflows start from a PNG. Converting PNG to ICO normally means a conversion website (upload your art, wait, download) or a command-line tool you have to look up. This tool does the conversion locally in your browser in a couple of seconds - no upload, no account.

It handles the full ICO workflow: pick your source image (PNG, JPG, SVG or any raster format), choose the sizes to embed (16, 32, 48, 64, 128, 256), and download a single multi-resolution .ico file that Windows picks the right frame of automatically. Batch mode converts an entire folder at once, and the preview shows each size so you can verify detail survives at 16 pixels.

Icon sizes and where they matter

16x16 is the taskbar and small toolbar case; 32x32 covers file explorers; 48x48 and 64x64 are desktop and high-DPI contexts; 256x256 covers Windows 10/11 large views. Embedding multiple sizes in one ICO is the professional approach - the OS picks the best frame per context instead of blurring one size.

Common Questions

Do I need to upload my image?

No. The conversion runs entirely in your browser, so your artwork never leaves your device.

What sizes should my ICO include?

A good default set is 16, 32, 48, 64 and 256. Windows selects the best frame per context automatically, so one multi-size file covers everything.

Can I convert multiple images to ICO at once?

Yes - batch mode converts an entire folder and lets you download results individually or as a ZIP.

Why does my icon look blurry at 16x16?

Detail does not survive downscaling. If the 16px preview looks muddy, simplify the design (thicker strokes, fewer elements) before converting.

Can I use this for favicons too?

Yes. ICO remains the standard favicon format for older browsers, and the same multi-size file works for modern 32px contexts as well.

How to Convert PNG to ICO Online in 3 Steps

Step 1: Add your image

Drop in a PNG, JPG or SVG - or an entire folder in batch mode. A square canvas with some padding around the artwork works best, because icons are usually centered and some tools crop to the frame.

Step 2: Choose the sizes to embed

Tick the sizes you need - 16 (taskbar, small toolbars), 32 (file explorers), 48 and 64 (desktop, high-DPI), 256 (Windows 10/11 large views). Embedding several sizes in one file is the professional approach: the OS picks the best frame per context instead of stretching a single size and blurring it.

Step 3: Download the .ico

Download the multi-size .ico and use it as your app icon, desktop shortcut icon or favicon. The live preview shows every embedded size, so you can check that detail still survives at 16 pixels before you ship the file.

Making a favicon with ICO

ICO is still the most compatible favicon format - older browsers and some CMSs expect it. Create a 256px master, embed 16/32/48/64/256, and reference the same file at 32px contexts. Modern sites can also serve SVG or PNG favicons, but a multi-size ICO covers every browser without extra requests. Because the conversion runs in your browser, client artwork never touches a server.

SVG to ICO: the cleanest route for multi-size icons

Vector input is the best source for an icon set, because the artwork is re-rasterized at each embedded size instead of being scaled down from one bitmap. Detail survives at 16px far better with SVG input, and a single source file produces the whole set - taskbar to large-view - in one batch run.