What are the image file formats?

Image file formats are:

1. JPEG

Full name: Joint Photographic Experts Group, referred to as JPG, was born in 1992 and is a standard image file format , suffix .jpg or .jpeg.

Features: small image size, fast download/transmission speed; this format compresses the image, resulting in a certain loss in detail and quality of the image. Generally, cameras can take pictures of different image qualities. JPEG (such as low, medium and high); the higher the image quality, the smaller the loss and the larger the corresponding image file.

2. PNG

Full name: Portable Network Graphics, referred to as PNG, was born in 1995. It combines the advantages of GIF and JPEG and has many similarities with GIF.

Features: The image size is larger, larger than jpeg. PNG files are very suitable for use on the Internet. It can retain rich picture details. PNG allows partial effects such as shadows to be semi-transparent or completely Transparent, the ideal logo format. But not enough for professional printing.

3. GIF

Full name: Graphics Interchange Fotmat. It is an image file format that only supports 256 colors. The color gamut is narrow and the file compression ratio is not high.

Features: Supports multi-frame animation, transparent Beijing images, small file size, fast download speed, and many image files of the same size can be used to compose animations.

4. BMP

Full name: Bitmap, which is the standard bitmap format under Windows system. It is not compressed and contains rich image information, resulting in larger files and can be used for printing. Generally suitable for Windows users with sufficient disk space, photography enthusiasts, lossless scanning, picture display, etc.

5. PSD

Full name: Photoshop Document. PSD is the default saving format of Adobe Photoshop. It can retain the layers in photo processing and is more flexible than any original image. higher. As long as you separate the layers, you can add any special effects on them without affecting the original photo. However, once the layers are merged and saved, they cannot be restored, so when exporting to other file formats, it is best to keep a PSD format photo as a backup.

6. TIFF

Full name: Tagged Image File Format.

This is the most commonly used industry standard format. Some printers will require photographers to provide full-size TIFF format. The TIFF format is an uncompressed file that is expandable, convenient, and modifiable. It uses lossless compression, supports multiple color image modes, and has high image quality. Every time I receive pictures from a different place and have to review them and send them to the supplier, two or three posters add up to several gigabytes. When the network is not good, I want to hold myself in distress.

7. RAW

Full name: RAW is the original file.

Many current digital cameras can shoot in RAW format, which can retain all original shooting information, such as white balance, exposure, contrast, saturation, etc. The RAW format is quite flexible in post-processing, but the file takes up a lot of space and takes a long time to transfer.