RESIZE IMAGES
How to Resize an Image by Pixels Online
Pixel dimensions describe an image’s width and height on a screen. Set the required pixels, choose how the image should fit, and inspect the exported file before using it.
Read the exact width and height
A requirement such as 1200 × 800 px means the output should be 1200 pixels wide and 800 pixels high. Check which number is width and which is height, and whether the destination also lists a file-size limit or format.
Pixel dimensions and kilobytes measure different things. Pixels describe the image grid; kilobytes describe how much storage the encoded file uses. An image can have the correct pixels and still be too large for an upload limit.
Keep the aspect ratio when resizing
Aspect ratio is the relationship between width and height. Keeping it locked prevents a photo from looking stretched. If you change the width, the matching height is calculated from the original proportions.
If both target dimensions have a different shape from the source, choose a crop or fit behavior instead of stretching unless distortion is intentional. Use the preview to confirm what will be cut off or left blank.
Choose between Fit, Fill and Stretch
Fit keeps the whole photo visible inside the target size, which can leave empty space. Fill covers the full target area but crops some edges. Stretch forces the image into the exact width and height and may change its shape.
For a face, logo or signature, check the edge positions after a crop. Keep the subject away from the boundary when the final frame is tight.
Save in the format the destination accepts
JPG is a common choice for photos, PNG can preserve transparency and crisp graphic edges, and WebP may reduce bytes for some images. The destination may allow only some formats, so check before exporting.
If the form sets a maximum KB size, enter that target as well as the pixel dimensions. The image must meet both rules.
Verify the downloaded image
After saving, check the actual pixel width and height, format and file size. Open the file once to make sure the image is not blurred, distorted or cropped in the wrong place.
Keep the original file. If the destination later asks for another shape or size, make a new export from the original instead of repeatedly resizing a smaller copy.