ENPTES

Image

How to resize an image without uploading it

A form that asks for a picture under a certain width, or a page that should not ship a 4000 pixel photo, needs a resize. Resize image sets the pixel size on your device. It does not invent detail, and it does not require an account.

Open the tool: Resize image

Do it on GustKit

  1. Drop the pictures

    Add one image or a batch. You can download them one by one or as a ZIP when there are several.

  2. Width, height, or percent

    With aspect ratio on, fill only the width or only the height and the other side follows. Fill both and the image fits inside that box. Percentage mode scales both sides by the same amount.

  3. Decide whether it may grow

    Leave the control that refuses to enlarge a smaller image on, unless you really want a bigger file. Enlarging cannot add detail. The result looks softer.

  4. Pick the format and download

    By default a JPG stays a JPG and a PNG stays a PNG. You can convert while resizing, for example to WebP, if the place you are sending it accepts that.

Pixels and percentages are different questions

Pixels answer a fixed box: a marketplace slot, a staff photo at 600 pixels wide, a slide that should not be wider than the frame. Fill one side and lock the ratio so a portrait does not get stretched into a square. If you fill both sides, the picture is fitted inside the box. It is not squashed to hit both numbers at once unless you turn the ratio off, and you usually should not.

Percentage answers a relative cut. Fifty percent halves the width and the height, so the pixel count drops to about a quarter. That is often enough to make a camera photo reasonable before you attach it. It is not the same job as Compress image, which keeps the pixel size and spends its effort on the file weight.

Making it larger is a compromise

A small logo stretched to a poster width looks soft because the new pixels are guesses. Untick the control that blocks enlarging, or type 150 percent or 200 percent, only when a slightly soft result is acceptable. For a sharp crop of the part you care about, use Crop image first and resize the crop, instead of scaling the whole frame and cutting later.

There is a ceiling. An image past the megapixel limit printed on the tool page is refused, because the browser has to hold every pixel. That limit is about memory, not about a plan.

Format, metadata, and the next page

Resizing re-encodes the picture. A re-encoded image does not keep EXIF such as GPS. That is useful when you do not want a location tag to travel with a photo, and it is a reason to keep the original if you still need the camera data.

If the destination wants a document instead of a picture, stop after the resize and open JPG to PDF. If it wants a smaller file at the same pixel size, open Compress image. If it wants PNG instead of JPG, or the reverse, Convert image does the conversion without forcing a new size.

The picture stays in this tab

The canvas in your browser does the scale. The file is not uploaded. A batch is still local: the ZIP is built here and downloaded to your device.

Check one result at the size you asked for before you resize a hundred similar shots. A wrong width is cheap to redo on one file and annoying to redo on a folder.

Frequently asked questions

Will a 50 percent resize make the file four times smaller?

The pixel count drops to about a quarter. The file size usually drops too, but the format and the quality setting also matter. A PNG of a screenshot may not shrink as much as a photo.

Can I resize and change format together?

Yes. Leave the format as it is, or pick another one in the same pass. A separate convert is only needed when you are happy with the size and only the format is wrong.

Does this crop the edges?

No. Resize scales the whole picture. Crop image is the page that cuts a rectangle out.

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