Convert PNG to ICO

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What happens when you convert PNG to ICO?

Animation becomes a still

Still image output. Animated files use only the first frame; animation is not preserved.

HDR to SDR

HDR is rendered to SDR using exposure and Reinhard tone mapping.

Icon packaging

Creates one square icon. The image is fitted inside it without stretching.

Encoding mode

ICO compression depends on the embedded image payload. Multiple sizes are alternatives, not animation frames; transparency handling differs between old masks and alpha-capable images. The output uses the implemented still-image encoder; file size depends on the pixels and format.

PNG

Source

PNG

Portable Network Graphics

Compression: LosslessTransparency: YesMetadata: Exif, ICC, Text

Lossless raster images with precise edges and optional transparency. The PNG standard also defines APNG animation.

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ICO

Target

ICO

Windows Icon

Compression: Depends on variantTransparency: YesMetadata: Image dimensions, Colour depth

An icon resource containing several raster sizes and colour depths, with masks or alpha for transparency.

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Is PNG → ICO right for you?

Good choice when

ICO fits your delivery use: Application icons & favicons.
You want a still illustration from an animated source.
You need an SDR delivery copy and can review its tone mapping.
You need an icon resource for a compatible application.

Probably not when

Motion, frame timing or loop behaviour must survive.
You need the original HDR range for relighting or grading.
You need automatic icon design or guaranteed multi-size packaging.
You assume format-level alpha support guarantees matching transparent edges.

PNG to ICO conversion details

Animation becomes a still: Still image output. Animated files use only the first frame; animation is not preserved.
HDR to SDR: HDR is rendered to SDR using exposure and Reinhard tone mapping.
Icon packaging: Creates one square icon. The image is fitted inside it without stretching.
Transparency representation: The implemented target supports alpha. Display-pixel processing can round translucent samples; archival sample equality is not promised.
Encoding mode: ICO compression depends on the embedded image payload. Multiple sizes are alternatives, not animation frames; transparency handling differs between old masks and alpha-capable images. The output uses the implemented still-image encoder; file size depends on the pixels and format.
Sample precision & colour: Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Metadata & colour: Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Compression: PNG: Lossless → ICO: Depends on variant PNG: PNG compression is lossless. Palette conversion, resizing or reducing bit depth before encoding can still discard information. Animation is the APNG extension included in the third edition. ICO: ICO compression depends on the embedded image payload. Multiple sizes are alternatives, not animation frames; transparency handling differs between old masks and alpha-capable images.
Transparency: Transparency is replaced with white by default. Change the background in Advanced options.
Animation: Still image output. Animated files use only the first frame; animation is not preserved.
Colour depth: PNG: 1–16 bits/sample
HDR: PNG: Third-edition signalling
Multiple images: ICO: Alternative icon sizes
Dimensions: Creates one square icon. The image is fitted inside it without stretching.
Metadata: Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.

Common questions

Will the output keep animation?

Still image output. Animated files use only the first frame; animation is not preserved.

How will HDR brightness be mapped?

HDR is rendered to SDR using exposure and Reinhard tone mapping.

Will ICO automatically create all icon sizes?

Creates one square icon. The image is fitted inside it without stretching.

Are bit depth and colour values guaranteed to match?

Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.

Will metadata and colour profiles be retained?