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調整Photo尺寸

Change the width and height of Photo files while keeping their proportions intact. 直接在瀏覽器中執行——無需上傳、無需註冊、完全私密。

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尺寸設定
調整大小完成

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This page resizes Photo files specifically. The Photo format is decoded, scaled and re-encoded entirely inside your browser, so the file never travels anywhere and the output stays in Photo.

How it works

  1. Select one or more Photo files.
  2. Enter the width or height you want, in pixels or as a percentage.
  3. Keep the aspect ratio locked unless you specifically need to distort the image.
  4. Download the result as Photo.

Good to know

Resizing a Photo file re-encodes it, which means the compression is applied again. Going down in size usually shrinks the file considerably; going up will make it larger without adding real detail.

Frequently asked questions

Does resizing Photo lose quality?

Scaling down looks clean because you are discarding pixels you no longer need. Scaling up cannot add information, so a Photo enlarged well beyond its original size will look soft.

Can I resize several Photo files at once?

Yes — select as many Photo files as you like and the same dimensions are applied to all of them.