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Change an image's dimensions by pixels or percentage.
Drop your files here
or browse, or paste from clipboard
JPG, PNG, or WebP images
Processed in your browser - never uploaded
Resizing an image should be quick and painless, whether you need to shrink a huge camera photo down to a sensible size or nudge a graphic to exact pixel dimensions for a website. This free Resize Image tool lets you change any image's width and height in seconds, either by typing precise pixel values or by scaling it up and down as a percentage of the original.
What sets it apart is where the work happens: entirely inside your own browser. Powered by WebAssembly, the tool resizes your picture locally on your device, so your files are never uploaded to any server and never leave your computer. That makes it a genuinely private choice for personal photos, work documents, and anything you would rather not send to the cloud.
You stay in control of the output too. Keep the aspect ratio locked so the image never looks stretched, or unlock it for a bespoke size, then save the result as a JPG, PNG, or WebP file to suit wherever it is headed next.
Add your image
Select or drag your image into the tool. It loads directly in your browser, so nothing is uploaded and the file stays on your device the whole time.
Choose how to resize
Enter exact pixel dimensions for the width and height, or switch to percentage mode to scale the image up or down relative to its original size. Leave the keep-aspect-ratio option on to avoid stretching, or turn it off if you want a specific custom size.
Pick your output format
Choose whether to save the result as a JPG, PNG, or WebP file depending on where you plan to use it.
Run the resize
Start the resize and the tool processes the image locally using WebAssembly. It only takes a moment, even for large photos.
Download the result
Save the resized image straight to your device. The original is left untouched, so you can go back and try a different size if you need to.
Every image is resized inside your browser and never sent to a server. Your photos and files stay on your device from start to finish, which is ideal for anything personal or sensitive.
Set precise pixel dimensions when you need to hit a specific target, or scale by percentage when you just want the image a bit smaller or larger without doing the maths yourself.
The keep-aspect-ratio option locks width and height together so your image keeps its proportions and never looks distorted, unless you deliberately choose a custom size.
Export as JPG for photos, PNG when you want a clean lossless copy, or WebP for a smaller modern web-friendly file, all from the same tool.
Most online PDF tools upload your document to a server to process it. This one does not. Every operation runs inside your own browser using WebAssembly, so your files are read, processed, and saved locally - they are never transmitted, stored, or seen by Sapphire Broking or anyone else. That makes it safe to use with financial statements, contracts, and identity documents.
No. The tool resizes everything locally in your browser using WebAssembly, so your images are never uploaded and never leave your device.
Only if you want it to. With the keep-aspect-ratio option switched on, the width and height stay in proportion, so turn it off only when you specifically need a custom, non-proportional size.
Yes. You can switch to percentage mode to scale the image up or down relative to its original size, which is handy when you do not have an exact pixel target in mind.
You can export the result as a JPG, PNG, or WebP file, so you can pick the format that best suits where you plan to use the image.
Yes. Because it runs entirely in the browser, it works on any modern device with a web browser, including phones and tablets, with no app to install.
There are no accounts or upload limits to worry about, and since the processing happens on your own device you can resize images one after another as often as you like, for free.
Keep going
Shrink JPG, PNG, and WebP images to a target size or quality.
Open toolCut an image down to the region you want with a drag-to-select box.
Open toolRotate and flip images by 90-degree turns.
Open toolConvert images between JPG, PNG, and WebP formats.
Open tool