Convert JPEG to ICO Free Online
Fast, private JPEG to ICO conversion. No signup required. Files never leave your browser until conversion.
Drop images here or browse
Multiple files supported · Max 20 MB each
Private
Files never stored
Batch
Multiple at once
Lossless
Quality control
Why Convert JPEG to ICO?
Converting JPEG to ICO lets you quickly create favicons or application icons from existing photographs or graphics.
Common Use Cases
- Creating favicons from existing images
- Windows application icons
- Quick icon generation from photos
Source Format
JPEG
Joint Photographic Experts Group
JPEG is the most widely used lossy image format, optimized for photographs and complex images with smooth color transitions. It achieves excellent compression ratios at the cost of some quality loss.
+ Excellent compression for photographs
+ Universally supported everywhere
+ Adjustable quality-to-size ratio
- Lossy compression degrades quality with each save
- No transparency support
Target Format
ICO
Icon File Format
ICO is the standard icon format for Windows applications and website favicons. It can store multiple image sizes in a single file, typically up to 256x256 pixels.
+ Standard format for favicons and Windows icons
+ Stores multiple resolutions in one file
+ Transparency support
- Maximum size of 256x256 pixels
- Limited to icon use cases
Quality & Size Notes
ICO files are limited to 256x256 pixels. Your JPEG will be resized to fit. For best results, crop your image to a square aspect ratio before converting.
Frequently Asked Questions
What size should my JPEG be for an icon?
Ideally, start with a square image (1:1 aspect ratio). The converter will resize it to fit within 256x256 pixels. For favicons, 32x32 or 64x64 is standard.
Can I use a photo as a favicon?
Technically yes, but icons work best with simple, recognizable graphics. Complex photos become unrecognizable at favicon sizes (16x16 or 32x32).
Does ICO support the JPEG quality I see now?
ICO stores the image in its own format. Quality depends on the resolution. At small sizes, fine detail from the original JPEG won't be visible.