What Image Resizer does
Image Resizer decodes one PNG, JPEG, GIF, BMP, WebP, or AVIF and draws it onto a new canvas. With aspect lock enabled, the image fits within both requested dimensions; with it disabled, the output uses the exact width and height.
JPEG inputs are exported as JPEG with a quality control, while other accepted formats are exported as PNG. Browser decoding applies the visible orientation it can determine, but animation and format-specific structures are not carried into the resized raster.
How to use Image Resizer
- Choose one supported image no larger than 20 MB.
- Enter the target width and height, decide whether to lock the aspect ratio, and set quality for JPEG input.
- Resize the image, confirm the reported output dimensions, and download it.
Important details
Aspect lock creates a bounding box
When enabled, the tool scales proportionally until both dimensions fit inside the requested box. One resulting dimension may therefore be smaller than the number entered.
Unlocked resizing can distort
Turning off aspect lock forces the exact requested width and height. If their ratio differs from the source, circles can become ovals and people or objects can appear stretched.
Practical uses
- Fit a photo within a maximum size required by an upload portal.
- Create an exact-dimension placeholder when distortion is acceptable or intentional.
- Downscale a large graphic before placing it in a document or webpage.
Privacy and limitations
Image decoding, scaling, and export occur in your browser; the selected file is not uploaded to PagesTools.
One file up to 20 MB can be resized from 1 to 12,000 pixels per dimension within a 40-megapixel canvas budget. Animated GIFs become a still output, non-JPEG inputs export as PNG, and enlarging an image cannot create genuine detail.