Enlarge an image 2× or 4×
Small pictures turn blocky when you stretch them. Here an AI model redraws edges as it enlarges, or a plain smooth resize does the job when you are in a hurry.
Add one or more images to enlarge (JPG, PNG, WebP, HEIC, AVIF).
or drop files here
Photo metadata such as EXIF and GPS location is not copied to the enlarged image.
Your files are processed on your own device and never uploaded.
How to use it
- Add pictures with ‘Choose files’ or drag them onto the page. JPG, PNG, WebP, HEIC and AVIF files open, and the list shows each picture's size next to the size it will become.
- Choose a ‘Method’. ‘Standard (fast)’ is a quick, smooth resize; ‘AI (sharper details)’ redraws edges and textures. Then set ‘Enlarge by’ to 2× or 4×.
- Pick the ‘Format’: PNG, JPG or WebP. JPG and WebP bring up a ‘Quality’ slider.
- Click ‘Upscale’. The AI method needs about 6 MB of files on its first run, then shows a progress bar with the time left, and ‘Cancel’ stops it whenever you like.
- Drag the line across the before-and-after view, and flip between ‘Fit’ and 100% to look at real pixels. ‘Download’ saves one result; ‘Download all (ZIP)’ saves the batch.
What it does
Two ways to enlarge
The AI method runs a Real-ESRGAN model on your device to rebuild fine detail and clean edges. The standard method is a Lanczos resize with light sharpening, ready at once and with nothing to download.
New size shown first
Each file in the list shows its current size and what it will measure after the enlargement, so you know the pixels before you start. A file that cannot reach the chosen size is flagged in the list.
A 16.7-megapixel ceiling
Results are capped at about 16.7 megapixels, which is 4096 × 4096, the largest canvas browsers draw reliably. When 4× would go past it, 4× is switched off and the page tells you what size it would have been. In a batch only the files that are too large are skipped, and the page counts them.
Check it at real pixels
Drag the line across the before-and-after view, or move the slider under it. ‘Fit’ shows the whole picture; 100% shows one image pixel per screen pixel, where softness and halos are easiest to spot.
Transparent areas stay put
Logos and cut-outs keep their clean outline in PNG and WebP, because the transparency is enlarged separately. JPG cannot hold transparency, so those areas turn white.
Tiles, and a way out
The AI works through a picture in small tiles, on the graphics chip when your browser allows it and on the processor otherwise. Big images and phones take longer, which is why the time-left line and the ‘Cancel’ button are there.
Good to know
Upscaling suits pictures that are slightly too small for the job: a thumbnail that has to fill a product listing, a scan you want to print, a logo that arrived 300 pixels wide, a photo you cropped hard on your phone. Standard resizing makes everything bigger and smoother. The AI method redraws edges and textures, so lines look sharper and surfaces less mushy, and it pays for that in time: seconds for a small picture, minutes for a large one.
Keep expectations realistic. An upscaler cannot add information the camera never recorded. A blurry photo stays blurry, tiny text stays unreadable, and a face made of a dozen pixels will not sprout eyes. Start from the largest, cleanest copy you have and enlarge once, instead of enlarging a file that was already enlarged.
Output files are named like photo-2x.png: the scale is added to the original name. Pick PNG when quality matters most and JPG or WebP when the file has to be small. Location tags and other camera data are not copied. The AI files come from this site once and your browser keeps them; the pictures never leave your device. The AI needs WebAssembly SIMD, so iPhone and iPad need iOS 16.4 or later. If it cannot start, the tool switches to Standard and asks you to press ‘Upscale’ again.
Questions and answers
How can I make a small image bigger without it going blurry?
Use ‘AI (sharper details)’ at 2× first and look at the result at 100%. Go to 4× only if you really need the size; the bigger the jump, the more the AI has to invent.
Which is better, AI or Standard?
Choose AI when detail matters, as in a print or a product photo. It takes longer and downloads about 6 MB once. Standard is instant and does a smooth job when you only need more pixels.
Why can't I choose 4×?
A 4× result would pass 16.7 megapixels. The page shows the size it would have been, and 2× stays available when it fits under the limit.
Will upscaling restore detail that is not in the photo?
No. Edges and textures come out cleaner, but unreadable text and a face that was never sharp stay that way.
How long does AI upscaling take?
Time depends on the picture and the device: seconds for a small file, minutes for a big one, and phones are slowest. A progress line estimates what is left, and Standard finishes at once.
Do my pictures get uploaded?
No. Both methods run in your browser. Only the AI program files are downloaded from this site, and only on the first run.