--- title: "Image Upscaler: Enlarge Images 2× or 4× | Potto AI" description: "Upscale an image to 2× or 4× its size, up to a 4,096-pixel long edge. The image upscaler adds detail for prints, product listings and archive photos." canonical: "https://potto.ai/image-upscaler" language: "en" dateModified: "2026-10-07" --- # Image Upscaler Upscale an image to 2x or 4x with the AI image upscaler, then inspect detail and artifacts at the size you will use. ## Check an image upscaler result against its source The same illustration before and after a 2x upscale in the AI image upscaler. Both are shown at the same display width, then inspected at full size. Look beyond sharpness. ![The same pencil portrait at 448×600 before upscaling, soft and low in detail](https://cdn.potto.ai/images/ai-image-upscaler-sketch-portrait-before-448.webp) *Source* ![Graphite pencil portrait enlarged 4x with the AI image upscaler, hair strokes and paper grain sharp](https://cdn.potto.ai/images/ai-image-upscaler-sketch-portrait-800.webp) *Upscaled 2x* ### Lettering and shapes A crisp-looking letter can change its meaning, and a softened diagonal can become an invented outline. Compare actual characters, repeated parts and fine edges with the source. More pixels can make interpreted detail easier to see without making it correct. ### Smooth and dark areas A plain wall or soft background may pick up texture it never had, and dark regions can show invented structure. Decide whether those changes are harmless in the intended use. When two versions both work, keep the one with fewer unwanted changes. ### Size in place Place the output at its real display width, then inspect important areas at full size. Each view finds problems the other misses. Compare source and result at matching sizes, because one zoomed in and one zoomed out gives a false impression of improvement. ## Three images and what the AI image upscaler must keep The scale follows the destination, and each kind of image needs a different review. Decide what must stay dependable, then check it first. ### Prepare a small product photo for a larger listing *800 → 1,600 px* Ask the photographer or supplier for a better original first; a real capture holds more detail than an enlarged preview. If you must enlarge, check outlines, buttons, seams, fasteners and printed claims, because a sharper texture is not automatically the correct one. Keep source and result under different names so a derivative is never mistaken for the original. ![Product photo at 800 pixels beside the same photo enlarged to 1,600 pixels, with seams and buttons in close-up](https://cdn.potto.ai/images/image-upscaler-denim-jacket-close-up-1080.webp) ### Make a family photograph easier to view *600 → 2,400 px* Look for the original scan or print before uploading. After enlarging, compare eyes, mouth, hairline and jewelry, because a plausible face is not necessarily the same face. Enlargement does not restore faded colors or remove scratches, and generated facial detail is not historical evidence. Keep the unaltered scan beside the viewing copy. ![Small 600-pixel photo of four people in winter scarves beside the same photo enlarged to 2,400 pixels, faces at full size](https://cdn.potto.ai/images/image-upscaler-group-photo-faces-1080.webp) ### Enlarge generated art without hiding its defects *1,200 → 2,400 px* An image upscaler fixes the size, not the anatomy, lettering or geometry of the source. Inspect fingers, railings, reflections and repeated pattern units, since enlargement makes existing problems easier to see. If the concept itself needs revision, return to the creation step and keep revision and enlargement as separate decisions. ![Generated illustration at 1,200 pixels beside the 2,400-pixel version, zoomed on fingers and a railing](https://cdn.potto.ai/images/image-upscaler-balcony-illustration-hands-1080.webp) ## How to upscale an image with the AI image upscaler Three steps in the panel above: upload, choose 2x or 4x, then compare with the source. ### 1. Upload the best available source Add a JPG, PNG or WebP image up to 10 MB, using the earliest copy you have rather than a chat or screenshot version, since repeated lossy saves leave blocks that a model may read as texture. Paid plans can add up to 10 images in one batch; each becomes its own task. Keep an untouched copy. ### 2. Choose 2x or 4x for the destination Measure the space the image must fill first. The output long edge is capped at 2,048 pixels for 2x and 4,096 for 4x, so a 1,500 by 1,000 source cannot reach 3,000 by 2,000 at 2x and is scaled to fit. A source already at a cap cannot use that option. Read the output size, not the label. ### 3. Generate, compare and download 2x costs 2 credits per image and 4x costs 6, shown on the Generate button before you confirm. Compare the source and result at matching display size, then inspect faces, lettering and edges at full size. Download the accepted image, confirm its actual dimensions and place it without stretching. ## What the image upscaler does to your image An image upscaler adds pixels to the frame you already have. These groups show where that helps and where to look twice. ### Pick the scale for the space you need to fill Measure the space the image has to fill before you pick a scale. The output long edge is capped at 2,048 pixels for 2× and 4,096 pixels for 4×, so a request that would pass its cap is scaled to fit and the real factor is smaller. Read the output size, not the label. - 2× costs 2 credits and 4× costs 6 credits per image - A source already at a cap cannot use that option ![Graphite pencil portrait enlarged 4x with the AI image upscaler, hair strokes and paper grain sharp](https://cdn.potto.ai/images/ai-image-upscaler-sketch-portrait-800.webp) *Example: a sketch illustration after a 2× upscale.* ### Cleaner edges and texture at the larger size The model interprets the detail it can see, so outlines, seams and surfaces look cleaner at full size. A sharper texture is not automatically the correct one, so check buttons, fasteners, dials and printed claims on a product photo against the source before it goes into a listing. - Compare source and result at matching display size - Inspect lettering and small marks at full size ![A chronograph wristwatch with a steel bracelet on dark slate](https://cdn.potto.ai/images/image-upscaler-chronograph-watch-1080.webp) *Example: a watch photo enlarged. Check the dial and the bracelet.* ### The same frame, enlarged without crop or stretch The aspect ratio is preserved, so upscaling never crops or stretches the source, and it does not add the scene around it. If the layout needs space outside the frame, that is a different task from enlargement. Paid plans can add up to 10 images in one batch, and each image is its own task. - The output keeps the upload format: JPG, PNG or WebP - A failed image does not block the completed ones ![Lakeside park and mountains extended from a 4:3 photo to a 16:9 frame with the uncrop tool](https://cdn.potto.ai/images/uncrop-lake-16x9-1080.webp) *A 16:9 landscape keeps its ratio at either scale.* ### Make an old photograph easier to view Old prints are a common reason to upscale an image: a small scan becomes large enough to view on a screen or reprint. Scan the original at the highest resolution you can before uploading, because a better scan beats a bigger enlargement, and treat any sharper facial detail as interpreted, not recovered. - Generated facial detail is not evidence of the original - Keep the untouched scan beside the result ![An old sepia studio portrait of a seated woman in a long checked dress](https://cdn.potto.ai/images/image-upscaler-studio-portrait-vintage-1080.webp) *An old studio portrait: compare the face with the scan.* ## Keep exploring Potto AI An image upscaler adds pixels to the same frame. These tools cover what else an image can need. - [AI Image Enhancer](https://potto.ai/image-enhancer.md): Work on edges and texture, not only size. - [Photo Enhancer](https://potto.ai/photo-enhancer.md): Review faces and surfaces in a real photo. - [Unblur Image](https://potto.ai/unblur-image.md): Judge interpreted detail in a soft source. - [Uncrop](https://potto.ai/uncrop.md): Add room outside the frame, not more pixels. - [AI Background Remover](https://potto.ai/background-remover.md): Cut out the subject before composing a layout. - [AI Image Editor](https://potto.ai/ai-image-editor.md): Describe a change in one sentence. ## Image upscaler FAQs What an image upscaler does, how to choose 2x or 4x, and what to check when you upscale an image. ### What is an image upscaler? An image upscaler increases image pixel dimensions while processing the visible detail. Potto AI offers 2x and 4x options with output limits. The output remains a raster image in the source’s aspect ratio, and newly interpreted detail is not proof of the original appearance. ### Will 2x or 4x always multiply the exact dimensions? No. The output long edge is capped at 2,048 pixels for 2x and 4,096 for 4x. A request that would exceed its cap produces a smaller actual factor, and a source already at or beyond the option’s limit cannot use it. In a batch, one incompatible image can make the chosen scale unavailable for the group. Read the source and output dimensions before choosing. ### How do I choose scale without cropping or stretching? The aspect ratio is preserved: upscaling does not crop or stretch the source. Choose the scale from the space the image must fill, not because 4x sounds stronger. An enlarged image that would exceed a limit is scaled down to fit; a tier already reached by the source is unavailable. If the layout needs extra space at the edges, that is a different task from enlargement. ### Can upscaling recover faces, text or missing detail? No. Upscaling enlarges the existing frame; it does not add the surrounding scene, recover lettering that cannot be read or establish the exact detail of a small face. A result can look convincingly sharp while changing a number, a label or a facial feature, so compare every word and feature that matters with the source. For a screenshot or diagram, retake it at the needed size or keep the words as editable text. Flaws in generated art are enlarged along with everything else. ### Do I need an account to use the AI image upscaler? You can upload images and try the 2x and 4x options before signing in. Upscaling and downloading need an account; the sign-in dialog keeps your images in place. ### Which files and batches can I upload to the AI image upscaler? Upload JPG, PNG, or WebP up to 10 MB per image; the output keeps the upload format. Use the earliest copy you have, because repeated saving and messaging compression add blocks that a model may read as texture. Paid plans support up to 10 images in one batch. Each image has an independent task and credit outcome, so a failed image does not block completed results. Download all packages the available results in a ZIP. ### How do I check the cost to upscale an image? 2x costs 2 credits per image and 4x costs 6, and the quote on the Generate button updates when you change the scale. In a batch, each image is charged on its own, and a failed image releases only its own reserved credits. Plans and [credit packs](https://potto.ai/pricing.md) are explained on Pricing. ### Can I use the result commercially? Yes, on a paid plan; images made on the free plan are for personal use. Potto adds no watermark to downloads. Upscale only images you own or may use, and check enlarged labels, numbers and faces against the source before a print or a product page, because added detail is interpreted, not recovered. ## Upscale your image Upload an image, pick 2x or 4x in the AI image upscaler and compare the result with the source before you download.