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Image-to-icon converter. It does not work as expected. #118

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opened 2026-05-11 20:36:46 +00:00 by Zhekrom · 2 comments
Zhekrom commented 2026-05-11 20:36:46 +00:00
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The icon appears pixelated and lacks resolution. The conversion/export process generates a low-quality image.

The icon appears pixelated and lacks resolution. The conversion/export process generates a low-quality image.
Zhekrom changed title from Image-to-Icon Converter: icono pixelado to Image-to-icon converter. It does not work as expected. 2026-05-11 20:43:35 +00:00
Zhekrom commented 2026-05-11 20:43:43 +00:00
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I've tried with several images, and the same thing happens every time, regardless of the original image's resolution.

I've tried with several images, and the same thing happens every time, regardless of the original image's resolution.
Screenshot 2026-05-11 162829.png
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Screenshot 2026-05-11 162821.png
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Screenshot 2026-05-11 162829.png Screenshot 2026-05-11 162821.png
spikerj commented 2026-05-11 21:49:18 +00:00
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The standard maximum resolution for a .ico file is 256x256 pixels. While the format historically supported smaller sizes, modern Windows icons (Vista and later) utilize 256x256 pixels with PNG compression to provide high-resolution images for high-DPI displays.Key Details About .ico Files:Maximum Size: 256x256 pixels.Internal Structure: .ico files are containers that can hold multiple images at different resolutions (e.g., 16x16, 32x32, 48x48, 256x256) within a single file.Color Depth: Supports up to 32-bit color (24-bit color + 8-bit alpha channel for transparency).Why 256x256? The width and height are stored as a single byte in the format's header, limiting dimensions to a maximum of (256 \times 256) (0 to 255, where 0 represents 256)

The standard maximum resolution for a .ico file is 256x256 pixels. While the format historically supported smaller sizes, modern Windows icons (Vista and later) utilize 256x256 pixels with PNG compression to provide high-resolution images for high-DPI displays.Key Details About .ico Files:Maximum Size: 256x256 pixels.Internal Structure: .ico files are containers that can hold multiple images at different resolutions (e.g., [1](https://learn.microsoft.com/en-us/windows/win32/uxguide/vis-icons)6x16, 3[2](https://techcommunity.microsoft.com/discussions/windowsinsiderprogram/how-can-i-convert-png-to-icon-on-windows-pc-for-free/4239678)x32, 48x48, 256x256) within a single file.Color Depth: Supports up to [3](https://en.wikipedia.org/wiki/ICO_(file_format))2-bit color (2[4](https://createico.upliftorch.com/en/blog/ico-guide.html)-bit color + 8-bit alpha channel for transparency).Why 256x256? The width and height are stored as a single byte in the format's header, limiting dimensions to a maximum of \(256 \times 256\) (0 to 255, where 0 represents 256)
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Reference: spikerj/spikersoft-issues#118