Resize for exact requirements
Many websites ask for exact image dimensions or a maximum file size. The image tool lets you type pixel width and height, crop the image area, choose output format, and target a KB limit.
Image resizer
Resize, crop, compress, and prepare images online.
Use OmniToolbox as a practical image resizer for form uploads, profile photos, ID images, certificates, and online applications. Set dimensions, crop the useful area, choose a background color, and download a smaller file.
Control the background
Some portals require a white, blue, red, or plain background. Choose a background color before export so cropped or transparent areas render cleanly.
Preview before downloading
The original and output previews help you compare size, format, dimensions, and visible quality before using the file.
Common questions
How do I resize an image to exact dimensions?
Upload the image, enter the required width and height, crop if needed, select the output format, and run Crop, resize and compress.
Can I set a white or colored background?
Yes. Use the background color picker or color swatches before processing the image.
Can I reduce image size to a KB limit?
Yes. Choose Max size mode and enter the target KB value such as 50 KB, 100 KB, or 200 KB.