Image to ICO Converter
Create single-size or multi-resolution ICO icons without uploading your artwork.
Quick answer
Upload a JPG, PNG, WebP or static SVG, tick the icon sizes you need — 16, 32, 48, 64, 128 or 256 pixels — and the browser renders each layer and packages a multi-resolution ICO file. Download the favicon-ready icon instantly; nothing is uploaded and no account is required.
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JPG, PNG, WebP or sized static SVG · Up to 20MBAbout Image to ICO Converter
ICO is a container format rather than a plain image: one file holds several square renderings of the same artwork, commonly from 16 up to 256 pixels. Windows Explorer, browser tabs and the taskbar each pick the layer closest to the size they need, which is why a well-built multi-resolution icon stays crisp everywhere instead of going blurry whenever a small version is requested.
Source quality decides the result. A square, high-contrast source works best: the renderer fits non-square images inside each square layer without stretching, and fine detail disappears below 32 pixels anyway. If the artwork is not square, crop it first; if it is a vector, SVG to PNG can produce a clean raster source before conversion.
For a website favicon, tick the small sizes — 16 and 32 pixels cover most browser chrome — download the file and reference it as favicon.ico in your site root. Desktop and application icons need the larger layers, which is what the desktop preset is for. All rendering and packaging happen in this browser tab; the source image and the generated ICO never touch a server.
Which ICO layer sizes do you need?
Each layer inside a multi-resolution ICO serves a different surface. Tick the sizes your target actually displays.
| Layer size | Where it typically appears |
|---|---|
| 16 × 16 px | Browser tab and bookmark-list favicon |
| 32 × 32 px | Windows taskbar; browser shortcut tiles |
| 48 × 48 px | Windows desktop shortcut at standard display scaling |
| 64 × 64 px | High-DPI taskbar and shortcut surfaces |
| 128 × 128 px | Desktop shortcuts at 150–200% display scaling |
| 256 × 256 px | Windows Explorer extra-large icon view; the largest standard layer |
The Favicon preset selects 16, 32 and 48 px; the Desktop icon preset selects every layer from 16 up to 256 px.
How it works
Upload a JPG, PNG, WebP or static, self-contained SVG with declared width and height.
Choose 16, 32, 48, 64, 128 or 256 pixel icon sizes, or use the Favicon and Desktop icon presets.
The browser renders each PNG layer and packages the ICO locally.
Download your single-size or multi-resolution icon.
Features
Free to use
No signup required
Processed in your browser
Images are not uploaded
Works on mobile and desktop
Why use this tool
Create favicon.ico files for websites and web apps from a single artwork.
Build Windows desktop and application icons with 16–256 pixel layers in one file.
Turn logos and app artwork into bookmark icons without installing design software.
Frequently asked questions
Which image formats can become an ICO?
The tool accepts JPG, PNG, WebP and static, self-contained SVG sources with declared dimensions, up to 20MB, then renders each selected icon size locally.
What is a multi-resolution ICO?
One ICO file can contain several square sizes, such as 16, 32, 48, 64, 128 and 256 pixels, so a viewer can choose the sharpest match. Non-square sources are fitted inside each square without stretching.
ICO or PNG — which format should a favicon use?
Modern browsers accept PNG favicons declared in HTML, but ICO remains the safest default: Windows and older tooling read favicon.ico from the site root automatically, and one multi-size ICO covers every context without extra markup. Serving both — a favicon.ico in the root plus an explicit PNG link tag — is the common belt-and-braces setup.
Does ICO creation upload my image?
No. Canvas rendering and ICO packaging happen locally, and your image is not sent to a server or persisted.
How do I create a favicon from a PNG?
Upload the PNG, keep the Favicon preset selected and download the generated file. Rename it to favicon.ico if needed, place it in your site root, and browsers will pick up the 16 and 32 pixel layers automatically.
Why does my icon look blurry at small sizes?
Small icon layers hide detail, so complex artwork loses its shape at 16 pixels. Use a simple, high-contrast source and crop it square before converting for the sharpest result.