Convert JPEG to ICO - Free Online Image Converter
Online convert JPEG to ICO format with our fast and free image converter. No email or registration. Batch conversion up to 100 MB with advanced compression for high quality and smaller file sizes.
Click to select multiple images
Only JPEG files will be accepted
How to Convert Images
1
Select your input and output formats from the dropdowns above
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Click or drag and drop your images into the upload area
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Your images will be automatically converted
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Download individual files or all files as a ZIP
JPEG to ICO Conversion
JPEG files use lossy compression, which means they sacrifice some image quality to achieve smaller file sizes. Every time you edit and save a JPEG, it loses a bit more quality. JPEGs also don't support transparency, so every pixel must have a color value.
ICO is a file format specifically designed for computer icons in Microsoft Windows. An ICO file can contain multiple images at different sizes and color depths, allowing the icon to scale appropriately across the interface.
Frequently Asked Questions
Standard JPEG files contain a single resolution and lack the multi-size embedding capability required for proper icon display across contexts. A 512×512 JPEG downscaled to 16×16 for a favicon becomes illegible. Windows and browsers need multiple pre-rendered sizes for optimal display at different UI scales (browser tabs need 16×16, bookmarks need 32×32, Windows desktop needs 48×48 and 256×256).
Converting JPEG to ICO creates a proper icon container embedding multiple resolutions (typically 16×16, 32×32, 48×48, 256×256) from your source image. The OS/browser automatically selects the optimal size for each context, ensuring crisp display. Essential for website favicons (the small icon in browser tabs and bookmarks), Windows application icons, game launchers, and desktop shortcuts. Note: ICO format converts JPEG to uncompressed BMP internally, so a 50KB JPEG might become a 200KB ICO file.
Yes, Convertlet is 100% free to use. You can convert as many images as you want without any hidden fees or subscriptions.
Absolutely. All conversions happen securely. Your files are processed and then immediately deleted from our servers to ensure your privacy.
We support a wide range of image formats.
Input formats: .jpg, .jpeg, .png, .webp, .gif, .svg, .heic, .heif, .avif, .bmp, .ico, .tiff, .dng, .eps.
Output formats: .png, .jpg, .jpeg, .webp, .avif, .bmp, .gif, .ico, .tiff.
You can convert between any of these formats easily.