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Resize an Image

Set a width in pixels, a percentage, or a physical size in centimetres or inches, and this page redraws your photo at that size on your own device. The shape is kept unless you unlock it, and when you ask for a physical size the page shows you the pixel grid it works out to before you commit.

JPG, PNG or WEBP · up to 30 at once

Nothing uploadedNo sign-upNo watermarkHow that works

How to resize an image

  1. Tap Choose a photo and pick the image you want to resize.
  2. It starts at half size. Pick another named size, or type a width and let the height follow.
  3. Switch the unit to cm, mm or inches if a form asked for a physical size.
  4. Tap Resize photo, then save the result.

Pixels, percentages and centimetres are three different questions

A website or a social profile wants pixels: a fixed grid, and anything else is the wrong answer. A photograph you are trimming for email wants a percentage, because half of whatever you started with is usually close enough. A printed form wants centimetres, and that is the one that trips people up, because centimetres are not a size a file has until you also say how many dots go in each inch.

This page handles all three, and when you choose a physical unit it shows the arithmetic: 3.5 by 4.5 centimetres at 300 DPI is 413 by 531 pixels. If a form gave you both a physical size and a pixel size and they disagree, that line is how you find out which DPI they had in mind.

Leave one side blank and the shape takes care of itself

Type a width and leave the height empty, and the height is worked out from your photo’s own proportions. That is almost always what you want: forcing both numbers on an image whose shape does not match will squash somebody’s face, and no amount of resizing fixes that afterwards.

When you genuinely need both numbers — a square profile picture, a fixed print size — unlock the shape with the button between the two fields and type both. The tool will do exactly what you asked and will not argue about it.

Making an image bigger is not the same as recovering detail

Enlarging is switched off by default. A 300-pixel photo asked to become 1200 pixels does not gain three quarters of its detail back — it invents it, and it looks soft. If a form insists on a size larger than your file, the honest fix is a better source image, and the second-best fix is to enlarge and accept the softness knowingly rather than by accident.

Questions

Will resizing make the file smaller in kilobytes too?
Almost always, because fewer pixels take fewer bytes. But it is not a precise lever: if a form gave you a KB limit rather than a pixel size, use the compress pages instead, which search for the exact number.
What DPI should I use?
300 is the safe default for anything that will be printed, and it is what most Indian forms assume when they quote a size in centimetres. 96 or 72 is enough for something only ever viewed on a screen.
Can I resize several photos at once?
Yes, up to thirty. They all get the same instruction, so a batch works best when the photos share a shape — thirty portraits, or thirty landscapes, rather than a mix.
Does the photo leave my device?
No. The redraw happens in your browser using your own processor, which is why the page keeps working with your connection switched off.

Image tools