Tooltoss

Image Resizer

Change image dimensions by pixels or percentage, keeping the aspect ratio if you want. Resizing runs in your browser, so nothing is uploaded.

Drop images here or click to choose

JPG · PNG · WebP · HEIC · Multiple files · Never uploaded

Output format

How to resize an image

  1. Drop your images into the box.
  2. Enter a width and/or height in pixels, or a percentage.
  3. Click Resize and download the resized images.

Frequently asked questions

Q. Will resizing reduce quality?
Making an image smaller keeps it sharp. Enlarging adds no detail and can look soft, so it's best to resize down.
Q. What does “Keep aspect ratio” do?
It fits the image inside the width and height you enter without stretching it. Turn it off to force the exact size.
Q. What size should I use for the web?
1920 px wide is plenty for full-screen photos; 1200 px works for blog posts and 1080 × 1080 for Instagram squares.

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