图片指南
在不损失画质的情况下压缩、转换、调整图片大小并添加水印。
How to Add a Watermark to an Image
Mark your photos and documents with a clear, tasteful watermark. Learn where to place it, how strong to make it, and how to export a watermarked image in seconds.
How to Resize an Image Without Stretching It
Squashed faces and distorted logos happen when width and height are changed independently. Learn the aspect-ratio rule, the exact resize workflow, and when cropping is the better choice.
How to Convert HEIC Photos to JPG or PNG
HEIC photos look perfect on an iPhone but fail everywhere else. Learn what the format is, when to pick JPG or PNG, and how to convert your files in a few clicks.
WebP vs PNG vs JPG: Which Image Format Should You Use?
JPG, PNG and WebP each solve a different problem. Compare the three formats side by side and learn which one to pick for photos, logos, screenshots and modern websites.
How to Compress Images Without Losing Quality
Large images slow down websites and blow past upload limits. Learn why image files get big, how far you can safely compress, and how to shrink JPG, PNG and WebP files so the difference stays invisible.