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图像尺寸调整器

免费的图像尺寸调整器。将 PNG、JPG、WebP 或 GIF 调整到精确的像素尺寸,支持可选的宽高比锁定。完全在您的浏览器中运行。

Runs in your browserUpdated Apr 26, 2026

Settings

Drop a file or click to browse

Resize to any pixel dimensions

Up to 25 MB · processed locally in your browser

Result

Upload and resize.

常见问题

Will resizing reduce quality?

Downscaling looks great. Upscaling is limited by the source — we use a high-quality bicubic algorithm but can't invent detail that isn't there.

Are my images uploaded?

No — resizing happens entirely in your browser.

Can I resize multiple images at once?

Currently one at a time. Batch processing is on the roadmap.

Will it preserve transparency?

Yes — PNG and WebP keep their alpha channel. JPG output is always opaque.

Is the resizer free?

Yes — fully free, no signup, no size limits.

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