Convert Images to favicon.ico
Generate multi-resolution ICO files from SVG, PNG, WEBP, or JPG. Done entirely in-browser for 100% security.
Drag & drop your image here
or click to browse from your device
Upload an image to see live favicon simulation
Select sizes in the left panel to preview details.
ICO Analyzer & Extractor
Upload any Windows .ico file to inspect its structure, view all embedded resolutions, and download them as individual PNGs.
Drop your .ico file here
or click to browse from your device
Upload an ICO file to view and extract individual images
About ICO Files & Favicons
What is an .ICO file?
An ICO file is an image file format specifically designed for Microsoft Windows icons. Unlike simple PNG or JPG files, a single `.ico` file is a container that can hold multiple images at different sizes (resolutions) and color depths. This allows the operating system to scale the icon gracefully on the desktop, explorer window, or taskbar.
Why use ICO for website favicons?
While modern web browsers support PNG, SVG, and WEBP favicons, the traditional `favicon.ico` file placed at the root of a domain remains the most backwards-compatible standard. A multi-size ICO file containing 16x16, 32x32, and 48x48 pixel PNGs will be perfectly parsed by both older search engines, legacy browsers, and modern systems.
How does this tool process images?
All image conversions, resizing, and calculations are completed directly in your browser using HTML5 Canvas APIs and binary JavaScript. Your source files are never uploaded to any server, making this utility 100% private, secure, and fast.