Image to ICO converter
Quick Start Guide
Upload an Image
Choose a PNG, JPG, JPEG, or GIF file from your device.
Select a Size
Pick the ICO size that matches your favicon or application icon needs.
Download the ICO
Get the generated ICO file immediately after local processing finishes.
How to Use the Converter
- 1 Click Choose image file and select an image.
- 2 Choose the output ICO size.
- 3 Press Convert and Download ICO.
- 4 Save the generated ICO file for your website or application.
Frequently Asked Questions
1. Why did the conversion fail?
Make sure the source file is a PNG, JPG, JPEG, or GIF image and stays within the size limit. If one image fails, try another file or a smaller source image.
2. Where are ICO files commonly used?
ICO files are used for website favicons, Windows application icons, installers, and desktop shortcuts. Read more in our favicon guide.
3. Are my images stored?
No. The main conversion flow runs locally in your browser, so your image is not uploaded during normal use. See Privacy Policy for details.
4. What sizes can I create?
You can export ICO files at 16x16, 32x32, 48x48, 64x64, 128x128, and 256x256 pixels.
5. Can I convert ICO files back to image formats?
Yes. Use our ICO to PNG/JPG converter to extract the largest available image from an ICO file.
What Users Like About It
"Super fast conversion and direct ICO download. Useful for shipping favicons quickly."
- Alex Chen, Web Developer"Clear UI and practical size options. It is easy to prepare an icon set from one source file."
- Sarah Johnson, UI Designer"Browser-based processing is the right tradeoff for quick internal icon work without uploads."
- Mike Rodriguez, IT ManagerWhy Choose This ICO Converter
Quick Local Processing
Create ICO files in seconds directly in the browser without waiting on a remote queue.
Privacy by Default
Your files stay on your device during the standard conversion workflow.
Works Across Devices
Use the tool on desktop, tablet, or mobile when you need a quick icon export.
Useful Output Options
Choose from common favicon and application icon sizes up to 256x256 pixels.
More Icon Tools
Helpful Reading
Favicon Guide for Modern Websites
Learn which icon sizes to prepare, how ICO fits alongside PNG assets, and where favicons are used.
March 23, 2026App Icon Design Principles
Build more legible icons by tightening silhouette, contrast, spacing, and export choices.
March 23, 2026ICO vs PNG: Which Format Should You Choose?
Understand when ICO is required and when PNG should remain your editable source format.
January 10, 2025About the ICO File Format
What is an ICO file?
ICO is a Windows icon container format. A single ICO file can include one or more icon images for different sizes and display contexts.
Why use ICO?
ICO remains the standard format for Windows application icons and is still commonly used for classic website favicons.
Best practice for source files
Design from a larger PNG source, keep edges clean, and test the icon at 16x16 and 32x32 before exporting the final ICO.