--- title: "AI Image Expander: Expand a Photo to a New Ratio | Potto AI" description: "Use this AI image expander to turn a photo into 1:1, 3:4, 4:3, 9:16 or 16:9. It fills the new space around your original." canonical: "https://potto.ai/image-expander" language: "en" dateModified: "2026-10-24" --- # Image Expander Pick a new ratio. This AI image expander fills the space around your photo. ## Image expander before and after A tall 2:3 desert photo expanded into a 16:9 banner. ![Tall 2:3 photo of orange sand dunes under a clear blue sky, the original before the image expander](https://potto.ai/images/library/desert-1080.webp) *Original · 2:3* ![Wide 16:9 banner of golden dunes and pale sky, the same desert photo after the image expander](https://potto.ai/images/uncrop-desert-banner-16x9-1080.webp) *Expanded · 16:9* ### New frame The frame turned from tall to wide. Sand and sky now fill the width. ### Same scene The scene is still dunes under open sky. The light stays warm. ### Final look Look at dune edges and shadows. View the result at your final size. ## Where to use a photo expander Choose the ratio for the place the image will go. ### Vertical story *3:4 → 9:16* A tall ratio adds space above and below. Subjects near the middle fit best. ![A 3:4 snowy peak photo beside the same peak in a 9:16 frame with more fog above and snow below](https://potto.ai/images/uncrop-mountain-3x4-to-9x16-1080.webp) ### Banner or slide background *16:9* A wide ratio adds room on both sides. Leave the new space for a headline. ![Aerial view of pale sand and turquoise surf in a 16:9 frame](https://potto.ai/images/uncrop-aerial-wave-slide-16x9-1080.webp) ### Square image for a feed *16:9 → 1:1* A square adds room above and below a wide photo. Walls and floors carry on. ![A bright living room with a patterned rug in a square 1:1 frame](https://potto.ai/images/uncrop-living-room-square-1080.webp) ## How to use the image expander Three controls in the panel run the image expander. ### 1. Drop in your photo Add a file. The stage shows where it sits. ### 2. Choose a ratio and size Pick one of five ratios, then Standard or HD. Red marks the new space. ### 3. Run it and compare Press Generate. Compare the middle with your original, then download. ## What the image expander does The image expander changes the frame, not your photo. ### Expand to the ratio you need Start with one photo. Pick any of the five ratios. The image expander adds the missing width or height. - One photo, five shapes - The subject keeps its place ![Two snowy mountain frames side by side, 3:4 and 9:16](https://potto.ai/images/uncrop-mountain-3x4-to-9x16-1080.webp) *3:4 on the left, 9:16 on the right* ### Your photo stays in the middle The photo scales to fit the new frame and sits in the center. The tool generates only the space around it. - Center placement, no crop - Edges blend into the new space ![A lake park with mountains in a 16:9 frame, expanded from a 4:3 photo](https://potto.ai/images/uncrop-lake-16x9-1080.webp) *4:3 original, expanded to 16:9* ### New space follows light and lines Sky color, floor lines and shadows carry on into the new space. Straight edges should stay straight. - Light direction matches the photo - Lines run past the old edge ![A square living room frame with extra ceiling above and extra floor below](https://potto.ai/images/uncrop-living-room-square-1080.webp) *Ceiling and floor added, 1:1* ## Keep exploring Potto AI Need a different edit? Try these next. - [AI Image Upscaler](https://potto.ai/image-upscaler.md): Enlarge a finished photo 2x or 4x - [AI Image Editor](https://potto.ai/ai-image-editor.md): Change one detail with a short prompt - [Change Background](https://potto.ai/background-changer.md): Swap the backdrop behind your subject - [AI Image Generator](https://potto.ai/ai-image-generator.md): Describe a scene and get a new picture - [Text Remover](https://potto.ai/text-remover.md): Erase a date, caption or stamp - [Image Templates](https://potto.ai/image-templates.md): Restyle a photo with a ready template ## Image Expander FAQs What the image expander does, which ratios it offers and what it costs. ### What is an image expander? An image expander adds new picture area around a photo. Your original stays at the center. The tool fills the rest to match a new ratio. ### What is an AI image expander? An AI image expander uses a model to draw the new area. It reads the light, color and edges of your photo. Then it paints space that carries on the scene. ### How is a photo expander different from an upscaler? A photo expander adds room around the picture. An [upscaler](https://potto.ai/image-upscaler.md) adds pixels inside the same frame. Expand for a new shape. Upscale for a larger file. ### Which files, ratios and sizes does the image expander support? It takes JPG, PNG or WebP files up to 20 MB. Choose from 1:1, 3:4, 4:3, 9:16 and 16:9. Standard output is 1280 pixels on the long edge. HD output is 1920 pixels. ### How do I expand a 16:9 photo to 9:16? Upload the 16:9 photo and choose 9:16. Pick Standard or HD, then press Generate. The photo sits in the middle and new space fills above and below. ### Which photos work best in a photo expander? Open scenes such as sky, sand, water and plain walls work best. Fences, windows and signs are harder to carry on. Faces cut off at the edge need a close look. ### Does the image expander change my original photo? It keeps your original in the center and builds space around it. Exact pixel match is not guaranteed. Check the center against your file before you download. ### What should I check after I expand an image? Look at the area just outside your original first. Follow horizons, edges and shadows across it. Then zoom to the size you will post or print. ### Why can't I press Generate? Generate stays off until a photo is loaded. It also stays off when the photo already has the chosen ratio. Pick a different ratio to continue. ### How much does the image expander cost? One image costs 81 credits. Generate shows the price before you confirm. If a task fails, the reserved credits come back. [Pricing](https://potto.ai/pricing.md) lists plans and credit packs. ### Do I need an account to use the image expander? You can load a photo and set the controls without one. You need an account to generate or download. Your photo and settings stay after you sign in. ## Expand your photo to a new ratio Upload a photo, choose a ratio and press Generate.