JFIF to ICO - Convert icon online

(PNG, SVG, JPG, BMP, GIF, WEBP, HEIC or ICO etc.)
Conversion Results:
# Output File Source File Action

Steps:

1. Click "Choose Files" button to select multiple files on your computer. You can also click the dropdown button to choose online file from URL, Google Drive or Dropbox. The image format can be PNG, SVG, JPG, BMP, GIF, WEBP, HEIC or ICO etc. To create transparent icons, you must select image files with transparent background.

2. Choose icon type and icon sizes. You can choose to create one single multi-resolution icon for all chosen sizes or one icon file for each size. The standard sizes for icons are 16x16, 32x32, 48x48, 64x64 and 128x128 pixels. You can choose the "Customize size" option and enter a customized icon size. The format is [width]x[height], for example: 256x256.

3. Click "Convert Now!" button to start batch conversion. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox.

JFIF vs ICO:
Name JFIF ICO
Full name JPEG File Interchange Format Microsoft Icon
File extension .jfif .ico
MIME JPEG/JFIF image/x-icon, image/vnd.-microsoft.icon
Developed by Joint Photographic Experts Group Microsoft
Type of format Lossy image format Graphics file format for computer icons
Introduction The JPEG File Interchange Format (JFIF) is an image file format standard. It is a format for exchanging JPEG encoded files compliant with the JPEG Interchange Format (JIF) standard. It solves some of JIF's limitations in regard to simple JPEG encoded file interchange. As with all JIF compliant files, image data in JFIF files is compressed using the techniques in the JPEG standard, hence JFIF is sometimes referred to as "JPEG/JFIF". 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 JFIF defines a number of details that are left unspecified by the JPEG Part 1 standard. For example: The JPEG standard does not include any method of coding the resolution or aspect ratio of an image. JFIF provides resolution or aspect ratio information using an application segment extension to JPEG. 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 Axialis IconWorkshop, IcoFX, IconBuilder, Microangelo Toolset, Greenfish Icon Editor Pro, GIMP, ImageMagick, IrfanView, ResEdit.
Sample file sample.jfif sample.ico
Wikipedia JFIF on Wikipedia ICO on Wikipedia