Related guide
How to Resize an Image Without Losing Quality
Choose sensible dimensions and avoid repeated resizing.
Browser-based tool
Change an image’s width and height in pixels, resize by percentage, and download a new JPG, PNG, or WebP copy.
JPG, PNG, or WebP · up to 15 MB per image
Your image is processed in your browser and is not uploaded to our server.
Choose an image to set its dimensions, output format, and quality.
Resizing changes the pixel dimensions of an image. Pixels are the small points that make up an image, while dimensions are the width and height measured in pixels. Aspect ratio is the proportion between width and height. File size, shown in KB or MB, is separate: two images with the same dimensions can have very different file sizes because of format, quality, and image detail.
It often does when the new dimensions are smaller, but output format and quality also affect the file size.
It changes the other dimension automatically so the image keeps the same proportions.
No. It helps prepare dimensions, but you need to verify all current requirements with the organization receiving the file.
Related guide
Choose sensible dimensions and avoid repeated resizing.
Related tools