调整图片大小

按精确像素或百分比调整图片大小。提供社交媒体、高清和自定义尺寸预设。

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或将图片拖放到此处

Why Resize Images Online?

Properly sized images load faster, look sharper on target displays, and meet upload requirements for social media and web platforms. Our client-side resizer lets you set exact pixel dimensions or scale by percentage without uploading to any server.

How to Resize an Image

  1. Upload: Select the image you want to resize.
  2. Set Dimensions: Enter width and height in pixels, or pick a percentage. Use a preset for common sizes like Full HD or Instagram.
  3. Download: Click Resize & Download to save the resized image.

❓ 常见问题

Does resizing reduce image quality?

Downscaling preserves quality well. Upscaling beyond the original size may introduce softness, though our tool applies sharpening to minimize that.

Which preset sizes are available?

Full HD (1920x1080), Square (1080x1080), Icon (512x512), YouTube Thumbnail (1280x720), Instagram Post (1080x1350), Facebook Post (1200x630), and LinkedIn Post (1200x627).

Are my images sent to a server?

No. All resizing is done locally in your browser using the Canvas API.