--- title: "How to resize an image by pixels, percent or KB | ToolSugar" description: "Resize one image to exact pixels, a percentage or a file size in KB, and learn how the proportion lock and shape options work." canonical: https://toolsugar.com/blog/how-to-resize-an-image image: https://toolsugar.com/og.png --- # Resize an image to the exact size you need Updated 2026-11-09 To resize an image, set a new width and height, a percentage, or a file size target. Resize Image on ToolSugar handles one picture at a time in your browser, with exact pixels up to 12000 per side, percentages from 1 to 400, and a maximum size in KB. Nothing is uploaded. [Open Resize Image](https://toolsugar.com/tools/image-resizer) ## Resize an image in four steps Pick the mode that matches what your form or app asks for. 1. Add one image. 2. Choose Exact pixels, Percent or File size. 3. Enter the value, and keep or release the proportion lock. 4. Pick a format, press Resize, and download. ## Exact pixels and the proportion lock With the lock on, changing the width updates the height so the picture keeps its shape. Release it when a portal wants a fixed size such as 800 by 600 and your photo has a different shape. Then the tool has to choose. It can crop to fill the new frame, add white bars around the picture, or stretch it. Cropping loses the edges, bars keep everything, and stretching distorts faces and circles, so use it sparingly. ## How to resize an image to a KB limit In File size mode you enter a maximum in KB. For JPG and WebP the tool searches quality settings first and finds the highest quality that fits. It reduces the pixel size only when quality alone cannot reach the number. The tool counts 1 KB as 1000 bytes. If a site counts 1024, leave a little room under its limit. PNG has no quality setting. The only way to reach a target is to shrink the dimensions, so choose JPG or WebP when you want to keep the width and height. ## Making a picture larger You can go up to 400 percent or 12000 pixels per side. Enlarging stretches the pixels you already have, so the result looks softer. For a small photo that needs real extra pixels, try Image Upscaler instead. ## Questions ### Can I resize many images at once? No. This tool takes one image per run so you can set the size for that picture. Repeat the steps for each file. ### What is the biggest size I can set? 12000 pixels on a side, or 400 percent of the original. ### Is the EXIF data kept? No. The picture is redrawn and saved as a new file, so camera model and GPS location are not in the download. [Open Resize Image](https://toolsugar.com/tools/image-resizer) ## Related guides - [How to compress an image without losing quality](https://toolsugar.com/blog/how-to-compress-an-image) - [How to make a passport photo at home](https://toolsugar.com/blog/how-to-make-a-passport-photo) - [How to crop an image to a size or aspect ratio](https://toolsugar.com/blog/how-to-crop-an-image) - [How to upscale an image with AI](https://toolsugar.com/blog/how-to-upscale-an-image)