Image Resizer
保持比例调整图片尺寸。
仅在您的设备上私密处理
使用指南
Image dimensions are measured in pixels, while file size is measured in bytes. Changing width and height is useful when a form asks for values such as 300×300 or when a camera photo is much larger than a website needs. Ratio lock is enabled by default so people, documents and logos keep their natural shape.
常见问题
Why did one dimension become smaller?
Fit mode preserves the aspect ratio and keeps the whole image visible. If the requested box has a different shape, one side must be smaller.
What is Fill + Crop?
It preserves the image shape while trimming the top and bottom or left and right until the requested box is completely filled.
When should I use Exact?
Only when distortion is acceptable or the source already has the same ratio. Never use it for passport faces unless the ratios already match.
Does resizing reduce file size?
Usually yes because fewer pixels need storage, but format and image detail also matter. Use the compressor when a portal specifies a byte limit.