JPEG compression principle
JPEG uses a lossy compression algorithm to reduce file size by removing image information that is not easily perceived by the human eye. Especially suitable for photos and complex images, it can achieve high compression rates while maintaining visual quality.
JPEG quality setting guide
80% quality is the best balance point for photos, maintaining good visual effects while significantly reducing file size. For web use, choose 60-80%; for printing, it is recommended to use above 90%.
JPEG is suitable for photos and complex images, small in size and fast to load; PNG is suitable for icons and transparent images; WebP is a modern format with higher compression rate but slightly worse compatibility.
Best practices for photo compression
Photos taken are usually large. It is recommended to adjust the size first and then compress. For web use, a width of 1920px is usually sufficient; for social media sharing, it can be compressed to 1080px.
Batch JPEG compression tips
When processing a large number of photos, it is recommended to test the best settings with one first and then apply them in batches. Our tool supports up to 20 photos to be processed at the same time, greatly improving efficiency.
Compressed JPEG files can be directly used for websites, social media, email attachments, etc. Supports individual download or batch packaging, convenient for different scenarios.