The upscaler uses deep learning super-resolution models. When an image is enlarged, they rebuild missing pixel detail instead of stretching the existing pixels, so edges and textures come out sharper and more natural than with traditional interpolation. You choose 2× or 4×, and the result keeps the original aspect ratio and composition.

2× doubles the resolution (e.g., 500×500 becomes 1000×1000) and costs 2 credits. 4× quadruples it (e.g., 500×500 becomes 2000×2000) and also costs 2 credits. 4× produces higher-resolution output and takes slightly longer. Credits are charged per image, and if a task fails, its credits are returned automatically.

Yes, with a free account. Signed-in free accounts get 10 free credits every day, and 2× and 4× upscales both cost 2 credits, so daily credits cover five upscales a day. No subscription is needed, and results never carry a watermark. When you need more, buy a credit pack or choose a plan.

Yes. Upscaled images reach up to 4096 pixels on the long side, which covers 4K. For example, a 960×540 image upscaled 4× becomes 3840×2160, the standard 4K UHD size, and an image with a 1024-pixel long side reaches 4096 pixels at 4×. Images with a transparent background are delivered as PNG and reach up to 3072 pixels. Larger originals are scaled down proportionally first so the result stays within these limits. Both 2× and 4× cost 2 credits.

Uploads can be up to 10 MB. The upscaled image is capped at 4096 pixels on the long side, or 3072 pixels for images with a transparent background, which are delivered as PNG. Larger originals are scaled down proportionally before being upscaled 2× or 4×. Images that are already large enough are not accepted, and no credits are charged.

Yes. AI upscaling is ideal for preparing low-resolution images for print. A 1000×1000 image upscaled 4× becomes 4000×4000 — suitable for large-format prints.

You can upload JPG, PNG and WebP images. The download format is chosen automatically: images with a transparent background, such as product cutouts or logos, come back as PNG with the transparency preserved, while all other images are delivered as JPG to keep large upscaled files compact. The result keeps your original aspect ratio and composition, with no cropping.

Yes, especially photos that look soft because they are small or low resolution. Upscaling adds pixel detail, so edges and textures come out sharper at the larger size, and at 2× with the Photo type, face enhancement restores facial detail in portraits. For the best result, upload the largest original you have rather than a screenshot or a copy that has been compressed several times.

Yes. Face enhancement restores facial detail during upscaling, which suits portraits and group photos where faces matter. It is available at 2× with the Photo type: turn it on in the options before processing. At 4×, the option is not shown, and the image is upscaled as a whole.

Yes. At 2×, choose the Anime type for anime-style images, illustrations and digital art, or Photo for photographs; each type uses a model tuned for that content. At 4×, one upscaling model handles all image types automatically, so the type option is hidden and no selection is needed.

It can make them sharper. A scanned old photo comes out clearer at 2× or 4×, and at 2× with the Photo type, face enhancement adds further facial detail. To repair scratches, creases and fading, or to colorize a black-and-white photo, use the Old Photo Restoration tool, then upscale the restored result if you need a larger print.

Yes. Results can be used commercially for e-commerce, print, social media, and more. No attribution is required on paid plans or credit packs; free-plan outputs require attribution to LubanAI. Results are kept for 30 days (7 days for free accounts).

LubanAI gives you free credits every day, so you can test your own images before paying. No subscription required — buy credits only when you need them. Every result downloads at full resolution with no watermark.

Tasks are processed in the order they are submitted. Paid tasks from subscribers and credit pack buyers are picked up first. Free tasks may wait longer during peak hours.