About this conversion
Turning a JPG photo into an ICO file is common when building a favicon or app icon from an existing photo. Since ICO has no native transparency-from-JPG concept, the square/round cropping is up to you before converting -- consider using this tool’s crop-friendly favicon package generator instead for a properly sized, multi-resolution result.
Frequently asked questions
Should I crop my photo first?
Yes -- favicons and app icons are almost always square. This tool’s "Export presets → Favicon package" option handles center-cropping automatically.
What’s the maximum size?
256×256 pixels -- a hard limit of the ICO format.
Will the photo look good that small?
Photos with fine detail often don’t read well at 16×16 or 32×32 -- simple, high-contrast source images tend to work best as icons.