ICO Image Compressor
Compress your ico (Icon File) images directly in your browser. Output to JPEG or WebP. No files leave your device.
Transparency note
This format supports transparency. If you choose JPEG as the output format, transparent pixels will be replaced with a white background. Choose WebP to preserve transparency.
More Tools for ICO
Related Tools
Explore other tools available for this format.
View ICO Files
Open and inspect ICO images directly in your browser.
ICO Metadata Editor
View and edit EXIF and other metadata for ICO files.
Convert ICO
Convert ICO images to other formats like WEBP, PNG, JPEG and more.
Resize ICO Images
Resize ICO images to exact dimensions in your browser. Lock aspect ratio and download instantly.
Crop ICO Images
Crop ICO images to any region in your browser. Draw a selection, lock aspect ratio, and download instantly.
Rotate ICO Images
Rotate and flip ICO images in your browser. Choose 90°, 180°, 270°, or flip horizontally and vertically.
What is ico?
About ICO
Icon File (.ico) is a popular image format known for its supports multiple resolutions and transparency in a single file. ICO is a standard format for storing icon images, commonly used for websites, applications, and operating systems, with built-in transparency and multi-resolution support.
FAQ
Common questions
We've got answers.
You can compress any supported input format including JPEG, PNG, WebP, SVG, BMP, GIF, TIFF, QOI, TGA, EXR, and more. The compressor decodes the input and re-encodes it at your chosen quality setting.
Currently the compressor outputs JPEG or WebP. JPEG gives the smallest file sizes for photos. WebP is the better choice when you need to preserve transparency.
Yes, but you control how much. Lower quality settings produce smaller files with more visible artifacts. Higher settings preserve more detail. The tool lets you preview the result before downloading.
Yes. JPEG does not support transparency. Transparent pixels will be replaced with a white background. Choose WebP as the output to preserve transparency.
It depends on the source format and quality setting. A PNG re-encoded as JPEG at 80% quality can often be 70-90% smaller. Results vary by image content.
Yes. The compressor includes a side-by-side comparison tool so you can visually assess the quality difference before committing to a download.