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Đổi kích thước PNG

Change the width and height of PNG files while keeping their proportions intact. Chạy ngay trong trình duyệt — không tải lên, không đăng ký, hoàn toàn riêng tư.

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Cài đặt kích thước
Đổi kích thước hoàn tất

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

How it works

  1. Select one or more PNG 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 PNG.

Good to know

Resizing a PNG 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 PNG lose quality?

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

Can I resize several PNG files at once?

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