AI Image Upscaler - Upscale Images 2x and 4x
Enlarge photos up to 4x with Real-ESRGAN AI super resolution: sharper details, cleaner edges, no pixelation. Fast, secure and protected processing, private by design, no sign up and completely free.
Drop your image here
JPG, PNG or WebP. Your image is fully protected and never collected, stored or shared.
Upscale factor
Quality mode
Done! Drag the slider to compare before and after.
Tip: AI mode downloads a small 5 MB model plus a 10 MB engine on first use, cached after that for instant future upscales. Your images stay fully protected and are never collected, stored or shared.
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How to Upscale an Image with AI
Three simple steps. No account, no watermark, no waiting in a queue.
Add your image
Drop a JPG, PNG or WebP image into the box above, or tap Choose Image on mobile.
Pick 2x or 4x
Choose your upscale factor and quality mode. AI mode uses Real-ESRGAN super resolution for sharp, natural details.
Compare and download
Drag the before and after slider to see the difference, then download your enlarged image as PNG or JPG.
Everything You Need to Enlarge Images
Real AI super resolution, free on any device.
Private by design
Your images are protected end to end and are never collected, stored or shared with anyone. Upscale personal and private photos with total confidence.
Real-ESRGAN AI model
Powered by the genuine Real-ESRGAN super resolution network, the same AI used by professional upscaling software, rebuilding fine detail instead of just stretching pixels.
2x and 4x upscaling
Double or quadruple the resolution: a 500x500 photo becomes a crisp 2000x2000 image ready for printing, e-commerce or social media.
Before and after slider
A draggable comparison slider shows the original and the upscaled result side by side, so you can see exactly what the AI improved.
Fast mode included
In a hurry? Fast mode enlarges instantly with smooth high quality scaling, perfect when you just need bigger dimensions without the AI wait.
Works on any device
Fully mobile optimized. Upscale images on Android, iPhone, Windows, Mac or Linux with the exact same experience and live progress.
PNG and JPG export
Download the enlarged image as lossless PNG or high quality JPG, with transparency preserved for PNG images with transparent backgrounds.
Truly free
No watermark, no daily limit, no sign up, no credits system. Unlimited AI upscales at full quality, at zero cost, forever.
Free AI Image Upscaler, Private by Design
This AI image upscaler enlarges photos to 2x or 4x their original resolution using Real-ESRGAN, a super resolution neural network that reconstructs realistic detail instead of simply stretching pixels. Blurry thumbnails, old low resolution photos, small logos and game artwork come out sharper and cleaner. Unlike almost every other AI upscaler online, this one uses protected processing technology, so your images are never collected, stored or shared with anyone.
Upscale Images for Printing, E-commerce and Social Media
Small images look pixelated when printed or posted at large sizes. Upscaling a 640x640 product photo to 2560x2560 makes it usable for marketplace listings, posters, banners and high resolution displays. Profile pictures, WhatsApp downloads and old camera photos benefit the most, because the AI removes compression artifacts while enlarging.
How AI Super Resolution Works
Real-ESRGAN was trained on millions of image pairs to learn how real textures, edges and patterns look at higher resolutions. When you upscale, the network predicts the missing detail for every pixel: skin, hair, fabric, text and foliage are rebuilt naturally instead of becoming blurry. The image is processed in small tiles with live progress, and 2x results are computed at 4x quality then refined down for extra sharpness.
Tips for Best Results
AI mode works best on photos up to about 1200 pixels wide, which covers most images that actually need upscaling. Very noisy images benefit from AI mode because the model denoises while enlarging. For screenshots and graphics with hard edges, try both modes and use the comparison slider to pick the better one. If you only need bigger dimensions quickly, Fast mode is instant. After upscaling, you can polish colors with our free Image Enhancer, or shrink the file for sharing with the Image Compressor.
More Free Tools on CorrectionCopy
All tools are fast, secure and private by design.
Frequently Asked Questions
Add your image, choose 2x or 4x and AI mode, then press Upscale Image. The Real-ESRGAN neural network enlarges it with sharp, natural detail and you download the result as PNG or JPG. No sign up, no watermark, no credits.
Yes. Your images are handled by secure protected processing and are never collected, stored or shared with anyone. They are permanently gone the moment you close or leave the page.
Real-ESRGAN is a leading open source super resolution neural network trained to reconstruct realistic detail when enlarging images. It rebuilds edges, textures and patterns instead of just stretching pixels, and also cleans up compression noise while upscaling.
On first use the tool downloads the AI model (about 5 MB) and the runtime engine (about 10 MB). Both are cached after that, so future upscales start much faster. Fast mode needs no download at all.
AI mode uses the Real-ESRGAN neural network for sharp, detailed results and takes a little time depending on image size and your device speed. Fast mode enlarges instantly with smooth high quality scaling, ideal when you just need bigger dimensions.
AI mode accepts images up to about 1200 pixels on the long side, which covers most photos that actually need upscaling, and outputs up to 4800 pixels at 4x. Fast mode handles images up to 4000 pixels. Files can be up to 25 MB.
Yes, that is exactly what it is best at. Old camera photos, WhatsApp downloads, small profile pictures and compressed images come out cleaner and sharper because the AI removes noise and compression artifacts while enlarging.
Yes, completely free with no watermark, no daily limit, no sign up and no credit system. It is supported by the ads on the page, and upscaling always stays free at full quality.