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 BMP with ICO:
Full name Microsoft Windows bitmap Microsoft icon
File extension .bmp, .dib .ico
MIME image/bmp, image/x-bmp image/x-icon, image/vnd.-microsoft.icon
Developed by Microsoft Microsoft
Type of format Raster graphics Graphics file format for computer icons
Introduction The BMP file format, also known as bitmap image file or device independent bitmap (DIB) file format or simply a bitmap, is a raster graphics image file format used to store bitmap digital images, independently of the display device, especially on Microsoft Windows and OS/2 operating systems. 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 The bitmap image file consists of fixed-size structures as well as variable-size structures appearing in a predetermined sequence. Many different versions of some of these structures can appear in the file, due to the long evolution of this file format. 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 Microsoft Paint, Adobe Photoshop, Paint Shop Pro, the GIMP, GraphicConverter, Helicon Filter, ImageMagick, Inkscape, IrfanView, Pixel image editor, Paint.NET. Axialis IconWorkshop, IcoFX, IconBuilder, Microangelo Toolset, Greenfish Icon Editor Pro, GIMP, ImageMagick, IrfanView, ResEdit.
Sample file sample.bmp sample.ico
Wiki BMP on Wikipedia ICO on Wikipedia