Resize Image Online: Change Width and Height in Pixels
Resize a JPG, PNG or WebP to an exact width and height in your browser, then download it at the size you need. Resize your image now.
Drop supported images here
or choose files from your device. Processing starts only when you press the button below.
How to Resize an Image
1. Add an image. 2. Enter the desired width and height. 3. Process the image. 4. Download the resized file.
Image Dimensions and Aspect Ratio
Width and height determine an image’s pixel dimensions. The aspect ratio describes the relationship between them. Keeping that ratio helps prevent stretching.
Resize vs Crop
Resizing changes the overall dimensions. Cropping removes parts of an image so a different shape can be achieved without stretching the remaining content.
Keeping the Aspect Ratio
The tool asks for an exact width and height and does not lock the ratio. Calculate the second number yourself: new height = original height × new width ÷ original width. For example, a 4000 × 3000 photo resized to 1200 pixels wide should be 900 pixels high. Entering a different height stretches the image.
Making an Image Smaller in KB
Fewer pixels usually means a smaller file, so resizing is the quickest way to cut file size. For finer control over the size, follow up with Compress Image. Note that the resized image is saved as a JPG, and any transparent area becomes white.
Enlarging an Image
Making an image larger cannot add detail that was not captured, so it may look soft or blurry. Start from the largest original you have whenever you can.
Supported Files and Output
Accepts one JPG, PNG or WebP image up to 50 MB and saves a JPG whose name starts with resized-. The result must stay under 40 million pixels.
Read the guide: How to Resize an Image Without Distortion
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Frequently Asked Questions
Can I resize by percentage?
Enter pixel sizes instead. For 50%, halve both numbers, so 4000 × 3000 becomes 2000 × 1500.
Is there a size limit?
The output must stay under 40 million pixels.
Which format is the result?
A JPG.