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PNG to ICO

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File Conversion Tools

Turn a PNG logo into a valid ICO file at a selected square size. Transparency is retained and rectangular artwork receives transparent padding.

Tool workspace

Files are processed locally in this browser. Limit: 10 MiB; SVG: 1 MiB. Images must be at most 16 megapixels and 8192 px per side.

Example

Convert a transparent 512 × 512 PNG logo into a 48 × 48 ICO. The aspect ratio is preserved with transparent padding.

Creates a single-resolution PNG-compressed ICO for modern browsers and operating systems. It preserves transparency; old icon readers and multi-size ICO workflows may need another editor.

Enable JavaScript to activate these controls and process your input in the browser.

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How to Use PNG to ICO

Use the controls above, then check the example and limitations below.

1

Select a PNG

Choose a real PNG image under 10 MiB. The signature and IHDR dimensions are checked before decoding.

2

Select one size

Pick a square icon dimension between 16 and 256 pixels. Rectangular artwork is padded with transparent pixels.

3

Download the ICO

Convert, download the ICO file, and check it at its intended display size. Keep a high-resolution source for future edits.

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What is PNG to ICO & How Does It Work?

PNG to ICO creates a square icon from an existing raster logo. The source is fitted without stretching, transparency is preserved, and the encoded PNG is stored inside a valid single-image ICO container.

Choose a size appropriate for its destination. Increasing the size of a small PNG cannot invent missing detail. This export supports modern PNG-compressed ICO readers; it does not create the multi-resolution or BMP icon variants required by some legacy software.

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Key Features & Benefits

✓

Preserves proportions

Uses transparent square padding instead of stretching a rectangular source.

✓

Correct binary packaging

Exports an ICO header, directory entry and matching PNG payload with the correct image size.

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Common Use Cases

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Website icons

Create an ICO favicon from an existing transparent PNG brand asset.

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Icon compatibility

Package one PNG image in the ICO format expected by a modern icon picker.

Frequently asked questions

No. The image is fitted inside the chosen square icon canvas with its aspect ratio preserved. Empty space stays transparent. Use a square source for maximum detail at small icon sizes.

The file contains a PNG-compressed ICO image, supported by modern icon readers. Some legacy applications require BMP-based or multi-resolution ICO files; those cases need a dedicated icon editor.

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