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Image sizing guide

How to resize an image to exact pixels

Make an image fit a website, listing, profile or form without accidentally stretching faces, logos or product photos.

Open free image resizer

Pixels and aspect ratio are different things

Width and height are measured in pixels. Aspect ratio describes the relationship between them: a square is 1:1, a landscape banner might be 16:9, and a portrait might be 4:5. A 1600 × 900 image and a 1280 × 720 image share the same 16:9 ratio, so scaling between them does not distort proportions.

Choose fit, crop or stretch

Fit keeps the entire source visible inside the requested maximum dimensions, preserving the original shape. It may not fill the exact width and height. Crop fills the exact requested dimensions by trimming the sides or top and bottom; use it when a marketplace requires an exact canvas. Stretch fills the exact dimensions but can distort the subject if the original ratio is different. For photographs, fit or crop is usually the better starting point.

Resize in four steps

  1. Open the image resizer and choose a supported JPG, PNG or WebP image.
  2. Enter the target width and height in pixels and select fit, crop or stretch.
  3. Choose your output format and quality, then process the image in the browser.
  4. Check the resulting pixel dimensions and visually inspect the downloaded file before uploading it elsewhere.

Common examples

For a square product thumbnail, start with equal width and height such as 1000 × 1000 and use crop when the source is rectangular. For a 4:5 social portrait, 1080 × 1350 has the appropriate ratio. For a 16:9 presentation graphic, 1280 × 720 keeps the shape consistent. These are examples, not universal upload requirements; use the destination's published dimensions.

What if the file is still too large?

Pixel dimensions and file size are different. After resizing, try the image compressor for JPG/WebP quality reduction and an optional target in KB. Transparency can be lost when converting PNG to JPG; use the format converter only when the destination accepts the format. Upscaling a blurry image adds pixels but does not recover missing detail.

Privacy and limitations

This browser tool processes the selected image locally rather than intentionally uploading it to an application processing server. Browser encoders can vary, and large images may require significant device memory. See the privacy policy for the full explanation.