How to resize an image
Add one or more JPG, PNG or WebP images.
Choose Pixels to set a width and/or height, or Percentage to scale everything by the same amount.
Keep Lock aspect ratio on to avoid stretching. With both width and height set, each image is fitted inside that box.
Click Resize images and download the results.
Why resize images?
Many websites, marketplaces and forms have maximum image dimensions or upload sizes. Resizing gets you under the limit without cropping.
Phone photos are often 4,000 pixels wide or more, far larger than any screen shows them. Scaling them down to 1,600–2,000 pixels cuts the file size dramatically and speeds up websites.
Resizing a batch to the same width keeps galleries, product listings and blog posts consistent.
Pixels vs percentage
Pixels gives you exact control. Set only a width and the height follows automatically, or set both to fit each image inside a bounding box. Use this when a platform asks for a specific size, such as 1200 × 630 for social previews.
Percentage scales every image by the same factor, whatever its size. It's the quickest way to halve a folder of photos.
Large reductions are done in stages with high-quality smoothing, which avoids the jagged edges and moiré patterns of a single big step. Enlarging is off by default because it can't add detail; it only makes the image softer and the file larger.
Is it safe?
Yes. Resize Image runs entirely in your browser. Your files are read and converted by your own device using built-in browser technology, so they are never uploaded to a server and nobody else can see them.
You can check this yourself: open your browser's developer tools, switch to the Network tab and convert a file. No upload requests are made.
Resized images are rebuilt from their pixels, so EXIF metadata such as GPS location is not carried over.
Files stay in this tab's memory only until you remove them or close the page.
Frequently Asked Questions
Will resizing keep my image's proportions?
Yes, as long as Lock aspect ratio is on (the default). If you turn it off and enter both a width and a height, the image is stretched to exactly that size.
Can I make an image bigger?
Yes. Turn on Allow enlarging. Enlarging can't create new detail, so the result will look softer than the original.
What if I enter a width larger than my image?
With enlarging off, the image keeps its original size instead of being scaled up, and the result says so.
Can I resize many images at once?
Yes, up to 25 at a time. The same settings are applied to every image, and you can download them all as a ZIP.
Does resizing reduce file size?
Almost always. Halving the width and height leaves a quarter of the pixels, so the file usually becomes much smaller. Lower the quality or switch to WebP for extra savings.
What size should images be for a website?
Usually no wider than about twice the size at which they're displayed. For a full-width image on a typical site, 1,600–2,400 pixels is plenty.