1.PSD format
PSD format is the inherent format of Photoshop. PSD format can open and save images faster than other formats, and well save layers, channels, paths, masks and compression schemes without data loss. However, few applications support this format.
2.BMP format
BMP(Windows Bitmap) format is the inherent format of Microsoft Pain developed by Microsoft, which is supported by most software. BMP format adopts a lossless compression method called RLE, which will not have any impact on image quality.
3.PDF format
PDF (Portable Document Format) is a file format created by Adobe Systems, which allows electronic documents to be viewed on the screen. PDF files can also be embedded in HTML documents of websites.
4.JPEG format
JPEG (short for Joint Photographic Experts Group) is the most commonly used image format. It is the most effective and basic lossy compression format, which is supported by most graphics processing software. JPEG images are also widely used to make web pages. If the image quality is not high, but you need to store a lot of pictures, then using JPEG is undoubtedly a good way. However, it is best not to use JPEG format for image output printing, because it improves the compression quality by damaging the image quality.
5.GIF format
GIF format is the most commonly used format for outputting images to web pages. GIF adopts LZW compression, and the color is limited to 256 colors. GIF format is represented by 87a and 89a codes. GIF87a strictly supports opaque pixels. GIF89a can control the transparency of those areas, thus greatly reducing the size of GIF. If you want to use GIF format, you must switch to indexed color mode so that the number of colors is 256 or less.
6.TGA format
TGA(Targa) format is the most widely used image file format on computer, which supports 32 bits.
7.TIFF format
TIFF(Tag Image File format) was developed by Aldus in the early days of Mac to standardize scanned images. It is the most widely used image printing format on Mac and PC platforms. TIFF uses LZW lossless compression, which greatly reduces the size of the image. In addition, the most exciting function of TIFF format is to save channels, which is very beneficial for you to process images.