图片尺寸调整工具
将任意图片调整为自定义尺寸，全部在你的浏览器中完成，无需上传。
如何使用本工具
- 1
Click the file picker and choose an image (JPG, PNG, WebP, GIF, or any format your browser can decode).
- 2
The Width and Height fields auto-fill with the image's original pixel dimensions.
- 3
Edit the Width and/or Height number fields to the size you want, in pixels.
- 4
Click Resize to render the result, then click Download to save it as a PNG.
什么是图片尺寸调整工具？
尺寸调整通过canvas API在客户端完成。选择以像素为单位的精确宽度和高度。为获得最佳质量，请缩小而非放大：放大图片永远无法增加细节，而缩小则能保留细节。
常见使用场景
Shrinking a phone photo to a fixed pixel width before attaching it to a forum post or support ticket.
Generating a square avatar by entering equal Width and Height values for a profile picture.
Producing a smaller preview thumbnail of a large screenshot for documentation.
Quickly checking how a logo looks at an exact pixel size like 200x200 before handing it to a designer.
Downscaling an oversized image so it fits within a CMS or email client's pixel limits.
Converting an image to PNG while resizing it, since the output is always saved as PNG.