Convert icon file online

Conversion Results:
# Output File Source File Action


1. Click "FILE" or "URL" button to switch local file or online file. Click "Choose file" button to select a file on your computer or enter an online file URL.

2. Choose one or more icon size. The default icon size is 32x32. You can select the "Custom size" check and enter your icon size. The format is [width]x[height], for example: 256x256.

3. Click "Convert Now!" button to start conversion. The output files will be listed in the "Conversion Results" section. You can get up to 7 icons at one conversion so you can choose the suitable size.

Compare GIF with ICO:
Full name CompuServe Graphics Interchange Format Microsoft icon
File extension .gif .ico
MIME image/gif image/x-icon, image/vnd.-microsoft.icon
Developed by CompuServe Microsoft
Type of format lossless bitmap image format Graphics file format for computer icons
Introduction The Graphics Interchange Format (better known by its acronym GIF) is a bitmap image format that was introduced by CompuServe in 1987 and has since come into widespread usage on the World Wide Web due to its wide support and portability. The ICO file format is an image file format for computer icons in Microsoft Windows. ICO files contain one or more small images at multiple sizes and color depths, such that they may be scaled appropriately. In Windows, all executables that display an icon to the user, on the desktop, in the Start Menu, or in Windows Explorer, must carry the icon in ICO format.
Technical details GIF supports up to 8 bits per pixel for each image, allowing a single image to reference its own palette of up to 256 different colors chosen from the 24-bit RGB color space. GIF images are compressed using the Lempel-Ziv-Welch (LZW) lossless data compression technique to reduce the file size without degrading the visual quality. An ICO file is made up of an ICONDIR ("Icon directory") structure, containing an ICONDIRENTRY structure for each image in the file, followed by a contiguous block of all image bitmap data (which may be in either Windows BMP format, excluding the BITMAPFILEHEADER structure, or in PNG format, stored in its entirety).
Associated programs Apple Safari, Google Chrome, Mozilla Firefox, Internet Explorer, Adobe Photoshop, Paint Shop Pro, the GIMP, ImageMagick, IrfanView, Pixel image editor, Paint.NET. Axialis IconWorkshop, IcoFX, IconBuilder, Microangelo Toolset, Greenfish Icon Editor Pro, GIMP, ImageMagick, IrfanView, ResEdit.
Sample file sample.gif sample.ico
Wiki GIF on Wikipedia ICO on Wikipedia