Resize images online
Set the exact width and height you need and download a perfectly resized image. Lock the aspect ratio to keep your image from stretching, or set custom dimensions freely. Everything runs in your browser, so your photos are never uploaded.
How to use Image Resizer
- 1
Add an image
Drag a JPG, PNG or WebP file into the drop area, or click to choose one from your device.
- 2
Enter dimensions
Type the width and height you want in pixels. The current size is filled in to start from.
- 3
Lock or unlock the ratio
Keep aspect-ratio lock on to scale proportionally, or turn it off to set width and height freely.
- 4
Resize and download
Click resize and save the new image. Your file is never uploaded anywhere.
Resize to the exact dimensions you need
Sometimes you do not want to merely compress an image — you need it to be a specific size in pixels. A profile picture must fit a square avatar slot, a banner has to match a template's dimensions, a forum or marketplace caps the maximum width, and a printed layout needs an image at a precise resolution. This resizer lets you type the exact width and height you want and produces an image at those dimensions, no guessing involved. Because the work is done on a canvas at full precision, the output lands on the numbers you asked for. Whether you are scaling a huge camera photo down to something a web page can use or nudging an image to fit a strict upload requirement, you stay in complete control of the final pixel size rather than being handed an approximation.
Keep proportions with aspect-ratio lock
The fastest way to ruin an image is to stretch it, leaving faces squashed or logos distorted. To prevent that, the resizer keeps the aspect-ratio lock switched on by default: change the width and the height updates automatically to match the original proportions, and vice versa. This way your image is scaled cleanly without any squishing, and you only have to think about one dimension. When you genuinely need a non-proportional size — fitting an image into a fixed box where some distortion is acceptable, or deliberately changing the shape — you can simply turn the lock off and set width and height independently. Having both modes one click apart means you get safe, proportional resizing by default but never lose the flexibility to do something custom when the situation calls for it.
Shrink file size as a bonus
Resizing is one of the most effective ways to make an image lighter, because file size is driven far more by pixel dimensions than people expect. A photo straight from a modern phone can be four or five thousand pixels wide — vastly more than any web page or email needs. Scaling it down to a sensible display size like 1200 or 1920 pixels wide can cut the file from several megabytes to a few hundred kilobytes while looking identical on screen, since the extra pixels were never visible at normal viewing sizes anyway. That makes resizing a quick win for faster-loading pages, smoother email attachments and more free space on your device. If you need to squeeze the file even further afterward, you can pair the resizer with a dedicated compressor, but very often resizing alone does the job. As a practical guide, most images shown on a typical screen never need to be wider than about 1920 pixels, and thumbnails or avatars need far less than that. Matching the pixel dimensions to how the image will actually be displayed is the smartest first step, because every pixel you remove that nobody would ever see is pure saved weight with no visible downside at all.
Private and instant — no uploads
Photos are personal. Screenshots can contain sensitive details, and work images may be confidential. Uploading them to a server just to change their dimensions is both a privacy risk and a waste of time spent waiting for transfers. In1 resizes everything locally using your browser's canvas, so your image never leaves your device — there is no upload, no queue and no storage. The resize happens the instant you click, even for a large photo, and the result is ready to download right away. Because no server is involved there is no file-size cap from a pricing plan, no watermark added to the output and no account to create. The original format is preserved too, so a PNG stays a PNG and a JPG stays a JPG, keeping transparency where it exists and giving you exactly the kind of file you started with, just at a new size.
Who resizes images and why
Almost everyone who works with images online eventually needs to resize one. Social media users size profile photos, cover images and posts to each platform's preferred dimensions so nothing gets awkwardly cropped. Sellers resize product photos to meet a marketplace's required width and height. Bloggers and site owners scale hero images and thumbnails down to keep pages fast and tidy. Job seekers shrink a photo to fit an application form's limit, and students resize images to satisfy an assignment's upload rules. Designers prepare assets at multiple sizes for different screens. Even printing has its own needs, where dimensions and resolution have to line up with a layout. In every one of these cases the goal is the same: get the image to a precise size without distortion or fuss — and to do it quickly, privately and for free. A handy habit is to note the exact dimensions a destination asks for before you start, then enter them here with the ratio lock set the way that situation needs. With the target size in hand, resizing becomes a ten-second task rather than a round of trial and error, and you end up with an image that drops perfectly into whatever slot it was meant for.
Higher limits, batch processing and an API are on the way. Want early access?