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ICO Converter

在浏览器中安全快速地执行ICO Converter。免上传服务器、免注册账号，完全免费且极速完成。

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1. Upload Image

Square PNG with transparent background works best

Upload an image to build a real multi-resolution .ico file — 16, 32, 48, 64, 128, 256px in one file

ICO Converter

DCPIXEL采用领先的前端WebAssembly与HTML5 Canvas技术，所有数据全部在您的设备本地处理，保障极高的安全性与数据隐私。

🔐 100% Private — Client-Side Execution

All processing happens inside your browser using WebAssembly and HTML5 Canvas. Zero file uploads, zero server tracking. Compliant with LGPD & GDPR.

常见问题解答

Why not just rename a PNG to .ico?
A renamed PNG is not a valid .ico file — Windows and many apps expect the real ICO container format with multiple embedded resolutions, which is exactly what this tool builds.
Which sizes are included?
16, 32, 48, 64, 128, and 256 pixels, all packed into a single .ico file so the right size is used automatically wherever it's needed.
What is the best source image to use?
A square image, ideally 256×256px or larger, with a transparent background for the cleanest result at every size.
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Score 99+ on Google PageSpeed Insights

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