Resize Image

Resizing changes how many pixels wide and tall a picture is. Use it to fit an upload form or attach a smaller version to email without touching the original file on your device.

  • Choose Exact, Percent, Fit or Fill, then set the size.
  • Lock the aspect ratio so faces and text are never stretched.
  • Read the preview size and megapixels, then Apply Resize.

How to resize an image online

Choose Exact to type a width and height, Percent to scale both sides equally, or Fit and Fill to work from a box. With Lock aspect ratio on, changing one side recalculates the other from the source shape. Fit keeps the whole picture inside the box. Fill fills the box and trims the overhang, centred. Apply when the Preview line shows the size you want.

ORIGINAL RESIZED 3000 × 2000 px 1500 × 1000 px 1.5 MP · 75% fewer pixels SCALE 50% same 3:2 shape
Example: the same 3:2 picture at two sizes. The shape is unchanged; the smaller file has fewer pixels.

What changes, and what does not

Resizing rewrites the picture at the new size. Making an image smaller usually reduces the file, but the exact KB depends on the format and detail. Making it larger adds pixels without adding detail, so a small photo enlarged to 3000 px looks soft. The current format is kept, but a JPEG is re-encoded, and the encoder may lower quality to avoid a larger file.

  • Load a JPG, PNG or WebP.
  • Pick a mode and enter the new size.
  • Apply, then download from the header.

Resize for email and forms

Most email clients and upload forms care about dimensions, file size, or both. For a quick attachment, a longest side around 1600 px usually views fine on a screen and keeps the message light. If a form names a maximum in KB, resize first, then use Compress to reach it. The working limit here is 8192 px per side and 50 megapixels. Anything larger is refused, as is any file over 100 MB; this tool does not shrink an oversized upload for you. Use Compress, which can downscale on load, or make a smaller copy first.

Resize when the shape or pixel count is wrong. If the pixels are right and the file is still heavy, use Compress instead of shrinking the picture again.

Common questions

Does resizing reduce file size?
Usually, when you make the picture smaller. Fewer pixels give the encoder less to store, though the saving depends on the format and content. A smaller JPEG often drops a lot; a PNG may drop less because it is lossless.
Will resizing make my image blurry?
Enlarging will, because the extra pixels are interpolated from the ones that exist. Shrinking can clean up edges without adding detail. Keep the original if you may need a larger version.

All image processing happens in your browser. Your image is never uploaded, and there is no signup.