ICO 转换器 - 在线将 PNG / JPG / SVG 转为多尺寸 .ico

上传一张正方形 PNG（256 × 256 或更大），选择所需的 ICO 尺寸（16、32、48、64、128、256），即可下载一个多分辨率的 .ico 文件，可作为 favicon.ico 直接放入您网站的根目录——自 Internet Explorer 6 起的所有浏览器均能识别。

Windows 桌面和快捷方式图标传统上会在单个 ICO 中包含 16、32、48 和 256 像素等多种尺寸，以便操作系统根据不同场景选用合适的分辨率。现代的 Windows 11 偏好 256 像素图标，而较旧的应用仍需要 32 像素。

可以。上传 SVG（可在任意分辨率下干净缩放）、JPEG 或 WebP，转换器会从原始文件栅格化生成所需的每种 ICO 尺寸。SVG 的效果最为清晰，因为每种尺寸都是从矢量重新渲染而来。

可以。透明的 PNG、SVG 和 WebP 源文件在转换为 ICO 后仍保留其 Alpha 通道，因此图标能干净地融入深色与浅色的浏览器标签页、Windows 主题以及 macOS 程序坞背景中。

favicon.ico 是一种多分辨率 Windows 图标，所有浏览器均可识别。Apple Touch Icon 是 180 × 180 的 PNG 文件，通过 HTML link 标签引用，iOS 和 iPadOS 在将网站添加到主屏幕时会使用它。大多数现代网站会同时提供这两种图标。

Your logo is uploaded briefly to our server to generate the .ico file and is deleted automatically right after processing; we never store it or share it with third parties. If you need a strictly offline workflow for an unreleased logo, a desktop icon-editing tool is the safer choice.

"单个 .ico"会把你选择的所有尺寸打包进一个多分辨率图标文件——这是网站 favicon.ico 的标准选择。"分开（.zip）"则为每个所选尺寸各导出一个独立的 .ico 文件，当构建流程或应用打包工具（Electron、Android、Windows 安装程序）需要分开的图标文件而非单个合并容器时非常有用。

Yes — Separate (.zip) mode only produces a ZIP when 2 or more sizes are selected; picking just one size in Separate mode downloads a single .ico instead, since zipping one file adds no value. Select at least two sizes if you specifically need the per-size ZIP output.

For a website favicon, keep the default sizes (16, 32, 48, 64, 128, 256) in Single .ico mode — one favicon.ico covers browser tabs, bookmarks and Windows shortcuts. For a native app icon set (iOS/Android/Electron), select all 8 available sizes and switch to Separate (.zip) so each resolution ships as its own file, matching what most app packaging tools expect.

The default selection (16, 32, 48, 64, 128, 256) covers the sizes browsers and Windows request most often, keeping the file small. Add 24×24 if you're targeting older Windows toolbar contexts, or 96×96 for some Linux desktop environments and higher-density app launchers — toggle any of the 8 available sizes on or off with a single click.

Sizes at or below 32 pixels are rendered with pixelated (nearest-neighbor) scaling in the 'Preview at each size' panel, which matches exactly how a real favicon looks in a tiny browser tab — smoothing it would make the preview misleadingly softer than the actual icon. Sizes above 32 pixels use normal smooth scaling since that's how they render in practice.