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PNG to ICO Converter — Fast & Free Online

PNG to ICO converts a lossless PNG bitmap into an ICO icon container that can store multiple sizes and alpha, improving Windows/macOS icon compatibility.

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Source
Drag and drop files here or click to browse

Drop your file here, or click to browse

Supports all major formats

Up to 50 MB (free)BATCH SUPPORT
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How PNG to ICO Conversion Works

PNG is an image format: it uses lossless DEFLATE compression and supports a full alpha-transparency channel, preserving every pixel exactly as encoded. ICO is an image format that bundles multiple raster images at different resolutions (16x16 through 256x256) into a single file for use as application icons. This conversion changes the file's encoding, compression method, and supported feature set. Colour profiles and orientation metadata are preserved in the output. Converting between these two formats is common when the source application does not support ICO natively or when the target platform only accepts ICO. 1converter processes this conversion server-side using open-source tools. Files are transferred over HTTPS, converted on secure cloud servers, and automatically deleted after 24 hours.

Sources & specifications

How to Convert PNG to ICO

Follow these simple steps to convert your PNG files to ICO format in seconds

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Step 1

Upload your PNG file to the converter

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Step 2

Choose the target ICO icon sizes (e.g., 16, 32, 48, 64, 128)

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Step 3

If available, enable transparency handling to keep PNG alpha in the ICO

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Step 4

Run the conversion to generate the .ico container

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Step 5

Download the resulting ICO and test it in Windows icon preview or your target app

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Average conversion time: Less than 2 minutes

Visual Conversion Preview

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Source file

Size:2.4 MB
Format:PNG
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Converting...

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Output file

This visualization shows the typical conversion process from PNG to ICO format, including expected size reduction and quality retention.

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Choose Your Conversion Quality

Select the perfect balance between quality and file size for your PNG to ICO conversion

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Low Quality

Smallest file, basic quality

File Size:Very Small
Speed:Very Fast
Quality Level
Recommended
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Medium Quality

Balanced size and quality

File Size:Medium
Speed:Fast
Quality Level
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High Quality

Larger file, great quality

File Size:Large
Speed:Moderate
Quality Level
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Maximum Quality

Largest file, best possible quality

File Size:Very Large
Speed:Slow
Quality Level

tips_and_updatesQuality Selection Tips

When to use Low/Medium:

  • •Web uploads and social media sharing
  • •Email attachments with size limits
  • •Quick previews and thumbnails

When to use High/Maximum:

  • •Professional printing and publishing
  • •Archive and long-term storage
  • •When quality is more important than size

Image Tip: For photos, Medium quality offers the best balance. For graphics with text or sharp edges, use High or Maximum quality to preserve clarity.

Why Convert PNG to ICO?

Discover the advantages of converting your PNG files to ICO format

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Preserves PNG alpha transparency when generating ICO icons

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Packs multiple icon resolutions into one .ico file for crisp UI scaling

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Smaller downloads than shipping separate PNGs for each icon size

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Ready for Windows app icons that require the ICO container format

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Maintains sharp edges better than resizing raster PNGs inside HTML/CSS

Additional Features

169+
Supported Formats
<2 min
Average Time
24/7
Available
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Popular Use Cases

See how professionals use our PNG to ICO converter in real-world scenarios

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Create a Windows shortcut/app icon from a transparent PNG logo

Convert PNG to ICO for this purpose quickly and easily.

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Generate multiple favicon/icon sizes inside one ICO for web deployments

Convert PNG to ICO for this purpose quickly and easily.

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3

Replace blurry site icons by converting a high-quality PNG source to ICO

Convert PNG to ICO for this purpose quickly and easily.

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4

Prepare branding assets for desktop installers and legacy system requirements

Convert PNG to ICO for this purpose quickly and easily.

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5

Export an app icon set for tools that only accept .ico files

Convert PNG to ICO for this purpose quickly and easily.

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Trusted by Professionals In

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Frequently Asked Questions

Everything you need to know about converting PNG to ICO

Yes—PNG’s alpha channel can be preserved so the ICO icon keeps transparent pixels. The result depends on the converter’s alpha handling, but ICO supports transparency.
PNG is lossless, while ICO commonly stores raster sizes (often as PNG-compressed images inside the container). Quality is typically preserved at the chosen sizes, but resizing to smaller icon dimensions can reduce detail.
Yes. An ICO can store multiple embedded images at different resolutions in one file, which helps icons remain sharp across Windows scaling and UI contexts.
ICO is widely supported by Windows desktop and many legacy systems, while browsers may require specific favicon handling. For web use, you may still need to verify the exact sizes your site expects.

Still Have Questions?

Our support team is here to help you with any questions about PNG to ICO conversion.

Contact SupportView All FAQs
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