Compress ICO to 100KB
Compress ICO to exactly 100KB with multi-round quality and resize optimization. Smart format conversion defaults to WebP for maximum compression. Free, private, browser-based.
Select ICO files
or drop files here
Maximum file size: 50MB per file
100 KB
Target size is fixed for this tool
80%
Smaller size
Higher quality
100% Secure
All processing happens in your browser. Your files never leave your device.
Super Fast
Compress multiple images in seconds with our optimized algorithms.
High Quality
Maintain image quality while reducing file size up to 80%.
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About ICO Compression
ICO (Icon) is the standard format for favicons and application icons. Our ICO compression tool optimizes these small but important files, ensuring fast loading times for your website favicons and app icons without sacrificing sharpness and clarity.