Convert JPG to ICO Online — Free
Runs 100% in your browser — your files never leave your device.
Favicons and Windows shortcuts want ICO files, but you usually start from a JPG. This converter wraps your image in a proper ICO container — scaling down to the 256×256 icon limit if needed — entirely in your browser.
How it works
- 1
Drop your JPG file
Drag a JPEG into the box, or click to browse. Nothing is uploaded.
- 2
Convert to ICO
The image is scaled to fit 256×256 and wrapped in an icon container.
- 3
Download the result
Save the ICO with one click — ready for favicons and shortcuts.
About this tool
Converting JPG to ICO
A JPG file jpg trades detail for small files with lossy compression, and carries no transparency. ICO ico is the windows icon container: a single file holding the same image at several sizes so icons render crisply at every scale. Converting moves your image from the first set of trade-offs to the second: file size shifts with the format's compression style, transparency survives where supported, and pixel data is re-mapped to the target format exactly.
What to check after converting
Open the result and check the two things conversion can change: transparency and size. Transparency is carried over exactly where the target format supports it. Remember the source was already lossy: converting to ICO preserves what arrived, it cannot restore what earlier compression discarded. Your original file stays untouched on your device either way, and the download is a brand-new file.
Frequently asked questions
Will converting to ICO improve the quality?
No conversion improves quality that compression already removed — moving JPG to ICO preserves what arrived and stops further loss, but the artifacts baked into the source stay baked in. The gains are about features: transparency, compatibility, or editing headroom.
Is my image uploaded anywhere?
No — the conversion runs entirely in your browser. The image is processed on your device and never sent to any server, which you can verify by disconnecting after the page loads.
Why convert JPG to ICO instead of the other way around?
The direction follows what the destination needs: Windows icons and favicons versus photos and web uploads. Converting back is always available — but each lossy hop re-encodes the image, so keep the highest-quality format as your working copy and convert toward the destination.