Convert PNG to ICO Online
Transform your Portable Network Graphics (PNG) files into universally supported Windows Icon Format (ICO) images in seconds. Our converter runs 100% locally in your browser—your images are never uploaded to remote servers, ensuring complete privacy and blazing fast conversions.
PNG vs ICO: Format Comparison
| Feature | PNG | ICO |
|---|---|---|
| Compression Algorithm | Lossless (Pixel perfect) | Lossless (Pixel perfect) |
| Alpha Transparency | Supported (Transparent background) | Supported (Transparent background) |
| Animation / Sequences | Static single frame only | Static single frame only |
| Browser Compatibility | 100% (Universal) | 100% (Universal favicon support across all browsers) |
| Ideal Application | Logos, UI design, screenshots, diagrams, and graphics requiring alpha transparency | Website favicons, desktop shortcut icons, taskbar emblems |
How to Convert PNG to ICO (3 Easy Steps)
- Upload PNG: Select your PNG file by dragging and dropping it into the conversion box, or click Browse to choose from your device.
- Select ICO Output: Configure your output parameters. The tool is pre-set to convert to ICO. Adjust quality or dimension preferences if required.
- Instant Download: Click Convert and download your finished ICO instantly. Everything processes locally in your browser memory.
Technical Specifications
About PNG
Full Name: Portable Network Graphics
MIME Type: image/png
Developer / Standard: PNG Development Group / W3C
PNG was invented in 1995 as a free, patent-unencumbered open-source replacement for GIF.
About ICO
Full Name: Windows Icon Format
MIME Type: image/x-icon
Developer / Standard: Microsoft Corporation
A container format that can store multiple icon resolutions (16x16, 32x32, 48x48) in one file.
Frequently Asked Questions
How do I convert PNG to ICO for free?
Simply drop your PNG file into the converter box above, ensure ICO is selected as the output format, and click Convert. Your converted ICO file is generated instantly right in your browser.
Will converting PNG to ICO reduce image quality?
No. ICO is a lossless format, so every pixel from your original PNG image is preserved with zero compression artifacts.
Does converting PNG to ICO preserve transparency?
Yes! ICO supports alpha transparency. If your source PNG image has a transparent background, it will be preserved.
Is my file safe when converting on convertfiles.app?
100% safe. Unlike traditional cloud converters, convertfiles.app processes everything directly on your device using WebAssembly and HTML5 Canvas. Your files never leave your computer or phone.