How to compress the photo size

How to compress the photo size? On-line image compression in factories using optical second format supports the function of reducing images in batches. Just enter the KB size you want to compress, and press one key. For example, you can compress a picture to less than 200KB. You can do this:

1. browser input "Lightsecond Online or light second Format Factory”-& gt；; Image compression->; Drag or add a picture

2. compress the specified size > enter 200 or 200KB.

3. Click Start Compression, wait a moment to complete compression, and display the compressed picture parameters.

4. Click Download to compress the image to less than 200kb. If it is greater than 200kb, you can enter 190kb until the specified compression size meets the requirements.

Picture file formats have their own characteristics and are suitable for different purposes and fields. The following are some common picture formats and their applications in different fields:

JPEG (Joint Photographic Experts Group): JPEG format is suitable for storing photos and images, and is usually used for digital photography, social media enjoyment, web images and mobile applications. It can provide good image quality while keeping a relatively small file size.

PNG (Portable Network Graphics): PNG format is widely used for icons, graphic design and images requiring transparent background. It supports lossless compression and transparency, so it is very common in image editing, web page design and graphic design.

GIF (Graphic Interchange Format): GIF is often used to create simple animations, small icons and online expressions. It supports transparent background and loop playback, so it is very popular in social media, online communication and advertising.

BMP (Bitmap): BMP format is a lossless bitmap image format, which is usually used for image editing, graphic design and image data storage. However, its file is relatively large, which is not suitable for online appreciation.

TIFF (Marked Image File Format): TIFF format is usually used to store high-quality images, such as scanning documents, professional photography and printing. It supports lossless compression and multi-channel data, so it is widely used in publishing field.

RAW:RAW format contains uncompressed original camera image data, which is usually used for professional photography and post-processing. It provides the highest quality image information, but the file is very large and needs professional post-processing.

WebP:WebP is a modern image format, which combines the characteristics of JPEG and PNG to provide high quality and small file size. Excellent performance in web page performance optimization and network application.

Heif (Efficient Image File Format): Heif is an efficient image format, which is common in mobile devices and cameras and provides high quality and small file size. It supports multiple layers and advanced functions.

PSD (Adobe Photoshop Document): PSD format is the native file format of Adobe Photoshop, which is usually used for image editing and graphic design. It retains layers, channels and editing information, and is suitable for professional designers and artists.

These different picture formats are suitable for different application scenarios, and the specific choice depends on the needs and purposes of the project.