PNG to ICO Converter

Convert PNG images to multi-size ICO icon files for Windows, favicons, and app icons

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Drag & drop your PNG file here

or click to browse (Ctrl+V to paste)

About

Welcome to TooliFyra's PNG to ICO Converter β€” a free browser-based tool that creates professional ICO icon files from your PNG images. ICO files can contain multiple resolutions (from 16Γ—16 to 256Γ—256) in a single file, making them essential for Windows applications, website favicons, and system icons. All processing happens locally in your browser.

Key Features

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Multi-Size ICO

Generate ICO with multiple resolutions in one file

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Customizable Sizes

Choose exactly which icon sizes to include

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100% Private

All processing in your browser β€” zero server uploads

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Fast Generation

Client-side ICO encoding for instant results

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Drag & Drop

Upload with drag-drop, click to browse, or paste

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Completely Free

No sign-ups, no limits, unlimited usage

How to Use

  1. Upload your PNG image using drag & drop, file browser, or Ctrl+V paste
  2. Select the icon sizes you want to include in the ICO file (checkboxes)
  3. View the original image and preview of the generated icon
  4. Click Download to save your ICO file instantly

Benefits of Using

ICO files are the standard icon format for Windows applications, website favicons, and system shortcuts. Modern ICO files support PNG compression internally, allowing multiple resolutions to be stored efficiently. By converting your PNG to ICO with multiple sizes, you create a single file that looks sharp at any display size β€” from taskbar icons (16Γ—16) to desktop shortcuts (32Γ—32) to high-DPI displays (256Γ—256).

Our tool uses PNG-encoded ICO format, which means each embedded icon is a valid PNG image. This ensures maximum compatibility with modern operating systems while maintaining transparency and image quality. You can select exactly which sizes to include, keeping your ICO file compact and tailored to your needs.

Use Cases and Applications

Web developers need ICO files for website favicons displayed in browser tabs and bookmarks. Software developers creating Windows applications require ICO files with multiple resolutions for application icons. Designers producing branding assets often need ICO files for software packaging and distribution.

System administrators creating custom shortcuts and toolbars can generate ICO files from company logos or custom graphics. Game developers sometimes use ICO files for launcher icons. Our tool makes it simple to create professional ICO files without any special software.

Why TooliFyra?

TooliFyra offers over 120 free browser-based tools built around privacy and simplicity. Our PNG to ICO Converter uses the Canvas API to resize your image to the selected dimensions and then assembles a standard ICO file β€” all without uploading your image to any server.

We keep our tools intuitive and accessible. No account creation, no usage limits, no hidden costs. Whether you need a single favicon or a comprehensive multi-size icon set, TooliFyra delivers professional results in seconds.

Frequently Asked Questions

What icon sizes should I include?
For most purposes, including 16Γ—16, 32Γ—32, 48Γ—48, and 256Γ—256 covers all common use cases. 16Γ—16 is used for taskbar/tab icons, 32Γ—32 for desktop shortcuts, 48Γ—48 for folder view, and 256Γ—256 for high-DPI displays.
Does the ICO file support transparency?
Yes, our ICO encoder uses PNG-format entries which fully support alpha transparency. If your source PNG has a transparent background, it will be preserved in all icon sizes.
Is there a maximum PNG size I can convert?
No file size limits. However, for best results, we recommend using a square PNG image at least 256Γ—256 pixels. Larger source images will be downscaled to your selected sizes.
Are the icons PNG-encoded or BMP-encoded inside the ICO?
Our tool produces PNG-encoded ICO entries, which is the modern standard. PNG encoding provides better compression and full alpha transparency support compared to the older BMP encoding.
Can I use this for favicon generation?
Yes, the generated ICO files are perfect for website favicons. Include at least 16Γ—16, 32Γ—32, and 48Γ—48 sizes for broad browser compatibility. Modern browsers also support 256Γ—256 for high-DPI displays.

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