AI Image Resizer: Change Aspect Ratio with AI

Open Resize image in the getimg.ai sidebar, drop in your file or pick one from the gallery, choose a target aspect ratio, then pick Smart Resize or Outpainting and generate. It runs in the browser, so the steps are identical on Windows, macOS, iOS and Android.

Neither mode crops to fit. Outpainting keeps every pixel of your original and generates the extra canvas around it. Smart Resize regenerates the image at the new ratio, so the composition is built for that shape instead of being trimmed down to it.

Both modes work on photographs, illustrations and realistic AI images alike. Which mode you pick matters more than the kind of image you start from.

It depends on the mode. Outpainting reads the edges of your image and continues the scene outward, matching the lighting and perspective already in the frame. Smart Resize does not fill a gap at all: it generates a new version of the whole image at the target ratio, so parts of the composition can shift.

Taking a square beach shot to widescreen with Outpainting, for example, might extend the ocean, add more sand, or introduce elements that were not in the original, such as extra beachgoers. That is generative behaviour working as intended, not a bug. Review the generated areas before you publish, especially when the image contains people, products, text or anything factual. The same applies to AI art and photographs alike.

Photographs, illustrations, renders, digital art and PNG files such as AI tattoo designs all work. The mode you choose matters more than the file type.

Smart Resize regenerates the entire image, which makes it risky for logos, packaging, UI screenshots, diagrams, text-heavy designs and exact product labels. For those, use Outpainting: the original stays untouched and only the surrounding area is generated.

Cropping only ever uses pixels that already exist. You pick a window inside the frame and everything outside it is discarded. That is completely predictable, and it costs you part of the picture. AI resizing can produce content that was not in the source: Outpainting generates the area around your image, Smart Resize generates a new version of it at the target shape. You keep the full scene, and in exchange results vary between runs.

Use Outpainting whenever exact source details matter. Logos, packaging, text-heavy designs, UI screenshots, diagrams, product labels and recognisable faces all need the original pixels to survive, and Outpainting only generates the canvas around them.

Use Smart Resize when you are happy for part of the composition to change and you want a frame built for the new format. It is the faster route when the goal is a layout that fits, not a pixel-exact copy of what you uploaded.

No. Every run saves a new file and leaves the source where it was. Outpainting keeps your original pixels inside the new, larger frame. Smart Resize creates a separate, newly generated version at the target ratio. Either way, the file you uploaded is still in your gallery, unchanged.

Resizing changes the aspect ratio: the shape of the frame and what fits inside it. Upscaling keeps the shape and raises the resolution, so the same frame comes back with more pixels. If you want a square image to become a Story or a banner, use the Resizer. If you want a bigger, higher-resolution file of the frame you already have, use the Image Upscaler, which reaches 2K, 4K and up to 16K on some models.

Smart Resize supports ten: 1:1, 4:5, 5:4, 3:4, 4:3, 2:3, 3:2, 16:9, 9:16 and 21:9. Outpainting supports the same list with the exception of 5:4. Smart Resize also has a quality switch for 1K, 2K or 4K output; Outpainting works from the resolution your source already has.

Yes. Drop or select more than one file in Resize image and the whole set is processed to the ratio you picked. Each image produces its own new file, and every original stays in your gallery.