Advanced JPG to ICO Converter

An ICO file is an image file format used for computer icons in Microsoft Windows. ICO files contain one or more small images at multiple sizes and color depths, so they can be scaled appropriately. They’re primarily used for:

• Website favicons (the small icon in browser tabs)
• Application icons
• File icons
• Start menu/shortcut icons

Our converter supports both JPG/JPEG and PNG formats. PNG is recommended if you need transparency in your icon, as it supports alpha channels. JPG is suitable for simple icons without transparency.

The most commonly used sizes are:

• 16x16px – For small icons and favicons
• 32x32px – Standard size for desktop icons
• 48x48px – Larger desktop icons
• 256x256px – For high-resolution displays

Including multiple sizes ensures your icon looks sharp in all contexts. For favicons, at least 16×16, 32×32, and 64×64 are recommended.

Common reasons include:

• The original image was too small for the selected ICO sizes
• Using a JPG with transparency (use PNG instead)
• The ICO file doesn’t contain the specific size needed
• Browser cache may need to be cleared for favicons

Try converting again with a higher resolution source image and ensure you’ve selected appropriate sizes.

Yes, our converter currently accepts files up to 5MB in size. This limit ensures smooth operation and quick conversion times. If your image is larger than 5MB, we recommend resizing it before conversion.

Note that ICO files are typically small (under 100KB) as they’re meant for icons, not high-resolution images.