The core Qt Gui library by default supports reading and writing image files of the most common file formats: PNG, JPEG, BMP, GIF and a few more, ref. Reading and Writing Image Files. …

Qt supports several file formats by default, and in addition new formats can be added as plugins. The currently supported formats are listed in the QImageReader and QImageWriter class …

Qt provides four classes for handling image data: QImage, QPixmap, QBitmap and QPicture. QImage is designed and optimized for I/O, and for direct pixel access and manipulation, while …

libpng is the official PNG reference library. Used in the qpng image plugin. Configure with -system-libpng or -no-libpng to avoid. The sources can be found in qtbase/src/3rdparty/libpng. …

For sizes up to 16 x 16, QIcon uses qt_extended_16x16.png and scales it down if necessary. For sizes between 17 x 17 and 32 x 32, it uses qt_extended_32x32.png . For sizes above 32 x 32, …

The Image component is used for adding images to the UI in several supported formats, including bitmap formats, such as PNG and JPEG, and vector graphics formats, such as SVG.

Images can be supplied in any of the standard image formats supported by Qt, including bitmap formats such as PNG and JPEG, and vector graphics formats such as SVG. If you need to …

Since Qt 6.7, Qt also provides access to the native icon library on macOS, iOS, and Windows 10 and 11. On Android, Qt can access icons from the Material design system as long as the …

For example, the PNG format allows you to embed text into the image's metadata (see text()), and the BMP format allows you to determine the image's size without loading the whole image into …

The : prefix makes it explicit that "/images/cut.png" should be loaded from the Qt Resource System. You can also reference the Qt resource system through a QUrl . Use the qrc scheme …