What are the image formats with transparent background?

The picture formats with transparent background are: 1. BMP format, but the BMP format needs to be saved as ARGB8888 format; 2. PSD format, which is a non-compressed original file saving format; 3. PNG format, you can Define 256 transparency levels for the original image; 4. GIF format; 5. TIFF format.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

Picture format with transparent background:

1. Save BMP format as ARGB8888 format. Since the BMP file format is a standard for exchanging graph-related data in the Windows environment, all graphics and image software running in the Windows environment support the BMP image format.

Note: BMP format can be saved as ARGB8888 format with transparency, but not all image browser software supports it.

2. PSD format: This is a special file format for Photoshop image processing software. The file extension is. psd, which can support various image features of layers, channels, masks and different color modes, is a non-compressed original file saving format. The scanner cannot directly generate files in this format. PSD files sometimes have a large capacity, but since all original information can be retained, it is the best choice to save images in PSD format during image processing that have not yet been completed.

3. PNG format supports transparency. Supporting transparency effect PNG can define 256 transparent levels for the original image, allowing the edges of the color image to blend smoothly with any background, thus completely eliminating jagged edges. This feature is not available in GIF and JPEG. PNG also supports alpha channel transparency for true color and grayscale images.

4. GIF format: The original meaning of GIF (Graphics Interchange Format) is "image interchange format", which is an image file format developed by CompuServe in 1987. The data of the GIF file is a continuous tone lossless compression format based on the LZW algorithm. Its compression rate is generally around 50%, and it does not belong to any application. Almost all relevant software currently supports it, and there are a large number of software in the public domain that use GIF image files.

5. TIFF format: Tagged Image File Format (TIFF) is a flexible bitmap format mainly used to store images including photos and artwork. It was originally developed by Aldus Corporation in conjunction with Microsoft Corporation for PostScript printing. TIFF joins JPEG and PNG as a popular high-bit color image format.

For more related knowledge, please visit the FAQ column!

The above is the detailed content of What are the image formats with transparent background?. For more information, please follow other related articles on the PHP Chinese website!