How to resize an image without installing software
Quick answer
Upload your image, set the new width or height (the other dimension can scale automatically to keep the proportions), and download the resized file.
- 1Upload your image.
- 2Set the width or height you need.
- 3Resize.
- 4Download the result.
Free, no sign-up, and your file is read on your own device rather than uploaded.
Resizing changes the actual pixel dimensions of an image - not just how large it displays, but how much data it contains. This matters when a form, marketplace or website states an exact size requirement, or when an image is simply larger than it needs to be for where it is going.
Set either the width or the height and the other side scales automatically to keep the image looking correct, unless you specifically want to change the proportions.
Step by step
Choose your image
Read locally in your browser - the current dimensions are shown as soon as it loads.
Image ResizerSet the new dimensions
Enter a width or height - the other side scales to match automatically, keeping the image in proportion.
Image Resizer
Tips
- Making an image smaller (downscaling) keeps quality well; making a small image much larger (upscaling) will look soft, since resizing cannot add detail that was never captured.
- Resizing to smaller dimensions also naturally reduces the file size - if that is the actual goal rather than a specific pixel size, resizing can work alongside or instead of compression.
- For a strict upload requirement stated as a maximum width or height rather than an exact size, set just that one dimension and let the other scale to match.
Common problems
The resized image looks stretched or distorted.
Set only one dimension (width or height) and let the tool scale the other automatically - entering both independently without matching the original proportions is what causes stretching.
An enlarged image looks blurry or soft.
That is expected when upscaling - resizing redraws the existing pixels at a new size but cannot invent detail that was not in the original. Start from the highest-resolution version of the image you have.
Frequently asked questions
- Can I resize to an exact width and height?
- Yes - set both dimensions directly if you need an exact size, or set just one and let the other scale automatically to preserve proportions.
- Does resizing reduce file size?
- Usually, yes - a smaller image generally produces a smaller file, though quality settings also affect the final size. Use the Image Compressor if file size specifically, not dimensions, is the goal.
- Will resizing up make a small image sharper?
- No - enlarging an image cannot add detail that was not captured originally, so an upscaled image will look softer than the same size shot or exported at higher resolution to begin with.
- Is my image uploaded to a server?
- No. Resizing happens entirely in your browser, on your own device.
Related image tools
- Image CompressorShrink an image by quality or to an exact target size in KB.
- PNG to JPGConvert a PNG to a smaller JPG, with transparency handled properly.
- JPG to PNGConvert a JPG into a lossless PNG, entirely in your browser.
Related articles
- Images
Need a smaller image for email? Compress it in your browser
Upload your image, choose a quality level or a target file size in KB, and download the smaller result. A photo usually shrinks the most; a screenshot or graphic responds less.
- Images
JPG or PNG? How to choose, and convert between them
JPG compresses the image for a smaller file, at a small cost to quality, and has no transparency - use it for photographs. PNG stores the image losslessly and supports transparency, at a larger file size - use it for screenshots, diagrams, logos and anything with sharp lines, text or a transparent background.