.QOI Estensione file

Quite OK Image Format

Sviluppatore Dominic Szablewski
Popolarità
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Che cos'è un file QOI?

A QOI file is a raster image saved in the Quite OK Image Format (QOI). The image it contains is losslessly compressed and saved in a 24-bit RGB or 32-bit RGBA format. QOI files are the same size as similar .PNG files, but can be encoded and decoded more quickly.

Maggiori informazioni

Screenshot di un file .qoi in ImageMagick
File QOI aperto in ImageMagick

In November 2021, developer Dominic Szablewski released the QOI format. The format is intended to be an open-source format that is easier to implement and faster to use than PNG.

Specifically, QOI images can be encoded 20 to 50 times faster than similar-sized PNG images, and they can be decoded 3 to 4 times faster. Each QOI image includes a 14-byte header, which identifies the image as a QOI file and specifies the image's width, height, included channels, and colorspace.

Come aprire un file QOI

You can open a QOI file with ImageMagick 7.1.0-20 and later versions (multiplatform) or XnViewMP 1.0 and later versions (multiplatform). You can also open a QOI file in IrfanView (Windows) after installing an associated plug-in.

Come convertire un file QOI

You can use ImageMagick or XnViewMP to convert QOI images to other formats. For example, XnViewMP can convert QOI files to the following formats (and many others):

  • .JPG - JPEG Image
  • .GIF - Graphical Interchange Format
  • .PNG - Portable Network Graphic
  • .TIFF - Tagged Image File Format
  • .BMP - Bitmap Image
  • .PCX - Paintbrush Bitmap Image
  • .TGA - Targa Graphic
  • .JP2 - JPEG 2000 Core Image
  • .JXR - JPEG XR Image
  • .WEBP - WebP Image
Apri oltre 400 formati di file con File Viewer Plus.Download gratuito

Programmi che aprono i file QOI

Windows
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Mac
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Linux
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