JXL to ICO Converter

Convert JPEG XL images to Windows ICO icon format. JXL offers superior compression and quality - now easily transform your JXL files into multi-size icons for Windows applications, desktop shortcuts, or favicons. Also check our JXL to JPG converter for standard image output.

Drop your JXL file here

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JXL JPEG XL
Max 10MB per file
Related Converters:
JXL to JPG JXL to PNG PNG to ICO JPG to ICO WEBP to ICO Favicon Generator

How to Convert JXL to ICO

  1. Upload your JXL file by dragging and dropping or clicking the upload area. JPEG XL files up to 10MB are supported.
  2. Select icon sizes you need. Choose multiple sizes for best compatibility across different Windows contexts.
  3. Click Convert and our server will process your JXL file using libjxl and create a multi-size ICO file.
  4. Download your ICO file ready for use in Windows applications, shortcuts, or as a favicon.
Pro tip: For web favicons, 16px and 32px are essential. For Windows desktop icons, include 256px, 48px, and 32px. Use our ICO to PNG converter if you need to extract sizes later.

About JPEG XL Format

JXL

JPEG XL is a next-generation image format offering superior compression and quality compared to JPEG, PNG, and WebP. It supports both lossy and lossless compression, HDR, wide color gamuts, and animation. While browser support is still growing, JXL is excellent for archival and professional use. Convert to JPG or PNG for broader compatibility.

ICO

ICO is the standard icon format for Windows applications and websites. A single ICO file can contain multiple image sizes and color depths, allowing Windows to display the best version for each context. For Mac icons, check out our PNG to ICNS converter.

Icon Size Guide

256px

Extra-large icons for high-DPI displays and Windows Vista+ icon views. Essential for modern Windows applications.

128px

Large icon view in Windows Explorer. Good for detailed icons that need to look crisp at larger sizes.

48-64px

Desktop icons and medium-sized views. The most commonly displayed size on Windows desktops.

16-32px

Taskbar, title bars, and small icon views. Also used for website favicons. Critical for recognizability at small sizes.

Frequently Asked Questions

JPEG XL offers excellent image quality, but ICO format is required for Windows icons and favicons. Converting JXL to ICO lets you use high-quality source images while creating compatible icon files. For alternative formats, try our PNG to ICO or SVG to ICO converters.

Yes! If your JXL file has an alpha channel (transparency), it will be preserved in the resulting ICO file. This is essential for icons that need to blend with different background colors.

For Windows applications, include 256px, 48px, 32px, and 16px at minimum. For web favicons, 32px and 16px are essential. Our Favicon Generator can create all the sizes needed for modern websites including Apple Touch icons.

Files are temporarily stored only during conversion and automatically deleted within 24 hours. For complete privacy, use our client-side converters like PNG to ICO which process files entirely in your browser.

We offer many JXL converters: JXL to JPG for photos, JXL to PNG for graphics with transparency, and JXL to WebP for web optimization. Check our JXL Converters page for all options.

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