Image Upscaler
Enlarge images 2× or 4× with AI — Real-ESRGAN preserves sharp edges and fine details without blur. Preview free; download the clean full-resolution image with credits.
Only upload a photo you have the right to use. If someone else is in it, you need their consent. This tool never identifies anyone and never estimates age, gender or emotion — Terms.
Drag & drop a file here, Ctrl+V to paste, oror
AI upscaling engine
Uses Real-ESRGAN, a deep learning model trained on millions of images. Preserves textures, sharpens edges, and adds realistic detail that simple interpolation can't.
2× and 4× presets
Pick the scale before you run. 2× is faster and safer for photos that are already large; 4× is for small or cropped images that need real detail back.
Private & Secure
Your photo is sent to our AI server, upscaled in seconds, and deleted immediately after processing. It is never shared or used for anything else. The clean full-resolution result is held only briefly so you can download it, then removed.
How it works
How AI image upscaling works
This tool uses Real-ESRGAN (Enhanced Super-Resolution Generative Adversarial Network), a deep learning model trained on millions of image pairs to reconstruct high-resolution detail from low-resolution input. Unlike basic interpolation that blurs edges and invents nothing, Real-ESRGAN predicts realistic textures, sharpens edges, and fills in plausible detail — effectively reversing the information loss from downsampling. The model runs on our AI server in 10-30 seconds depending on image size and scale factor. For metadata inspection of your original image, use the EXIF Checker.
What the upscaler does not do
Real-ESRGAN enlarges the whole image uniformly. It runs no face detection, no face model and no generative fill: nothing is invented that was not in the original pixels, and no facial feature is reconstructed, altered or replaced. If you need a portrait cut out from its background, use the Background Remover.
2× vs 4× — which scale to choose
2× doubles width and height (4× total pixels) — best when your source is already decent quality and you need a moderate boost for printing or social media. 4× quadruples dimensions (16× total pixels) — ideal for very small images, old screenshots, or thumbnails that need to become full-size. Higher upscaling takes longer and works best on clean source material. After upscaling, you can crop to exact dimensions with the Image Cropper or check whether the result is print-ready with the Print Readiness Scanner.
Common use cases for image upscaling
Restoring old or low-resolution photos for printing or framing. Enlarging product images for e-commerce listings that require high-res shots. Upscaling screenshots, thumbnails, or social media images to full size. Improving resolution for large-format printing — posters, banners, canvas prints. Enhancing profile pictures or headshots. After upscaling, optimize file size with the Image Compressor, resize for specific platforms with the Social Resizer, or convert formats with the Format Converter. Explore all 92 image tools.
Frequently Asked Questions
Is this image upscaler free?
What is Real-ESRGAN?
Should I use 2× or 4× upscaling?
Does the upscaler change faces?
Are my images stored on the server?
How long does upscaling take?
Scanly is an independent product. Real-ESRGAN is a third-party model we call through Replicate — an integration, not our brand. Scanly is not affiliated with, endorsed by or sponsored by Replicate or the model authors, and all model names and trademarks remain the property of their respective owners. AI Disclosure.