Is this image upscaler free?

Yes. There is no sign-up, no login and no usage limit. Nothing to install; it runs in your browser.

Are my images uploaded to a server?

No. Upscaling runs entirely inside your browser. The only network request is the first-time download of the AI model (about 5 MB). Neither your image nor the upscaled result is sent anywhere.

How large can the image be?

It handles images up to about 1 megapixel (around 1024×1024 or 1280×800 px). That limit comes from processing in the browser; shrink larger images before choosing them.

How long does upscaling take?

Processing runs on your device, so it takes from tens of seconds to a few minutes depending on its performance. Smaller images finish faster, and phones take longer than computers.

Does it work on a phone?

Yes, but it takes longer than on a computer, and processing may stop if you close the screen or switch apps. Keep this page open until it finishes. If an iPhone photo in HEIC format won't load, convert it to JPEG with the HEIC converter first.

Can I upscale a PNG with a transparent background?

Yes. Transparent areas stay transparent and the result is saved as PNG. JPEG and WebP images are saved in their original format.

AI Image Upscaler

Enlarge small or blurry images 2x or 4x with AI and make them sharper. Your image is processed in your browser and never uploaded.

Your input stays in your browser and is never sent.

Drop an image here, or click to chooseJPEG, PNG or WebP, up to about 1 megapixel (1024×1024). Processed in your browser, never uploaded

What Is This AI Image Upscaler?

This image upscaler enlarges small or low-resolution images to 2x or 4x with AI and increases their resolution. Instead of simply stretching pixels, which leaves edges blurry or jagged, the AI rebuilds edges and textures as it enlarges, so the result stays sharp.

It uses Real-ESRGAN, a super-resolution AI model. Everything runs inside your browser, and your images are never uploaded to a server. There is no sign-up or login, and you can use it as often as you like for free.

How to Upscale an Image (3 Steps)

ChooseDrag the image you want to upscale onto the "Drop an image here, or click to choose" box, or click the box to pick a file.
AdjustChoose the scale (2x or 4x) and press "Upscale". The first run takes a little longer while the AI model (about 5 MB) loads.
SaveWhen it's done, compare the original and the upscaled image side by side, then press "Download" to save it.

Supported Images, Size Limit, and Processing Time

Works for photos as well as illustrations and icons. The upscaled image is saved in the same format as the original.

Formats: JPEG, PNG (including transparent backgrounds), and WebP (one image at a time)
Size: Up to about 1 megapixel (around 1024×1024 or 1280×800 px). At 4x, the result can be up to about 4096×4096 px
Processing time: Processing runs on your device, so it can take from tens of seconds to a few minutes depending on its performance. Phones are slower than computers, and smaller images finish faster
Good for: Small photos from old cameras or phones, small images saved from the web, pixelated illustrations and icons, and rough screenshots you want to use in documents

Tips for Better Results

Crop to the part you need before upscaling: This tool handles images up to about 1 megapixel. If you only need part of a large photo, crop it first with the Image Cropper so it fits the limit and finishes faster.
Start from the most original image you have: JPEGs that have been re-saved many times or images compressed by social media may have blocky noise that gets enlarged too. Using the version closest to the original gives the cleanest result.
Pick the scale you actually need: For the web or slides, 2x is often enough and keeps the file smaller. Choose 4x for printing or large screens, and if you need an exact size, resize it with the Image Resizer afterwards.

Limits of In-Browser Processing

This tool runs only in your browser. It enlarges blurry photos and jagged illustrations cleanly, but it struggles with the following:

Fine facial detail: Redrawing fine facial details (it cannot recreate eye or hair detail that isn't in the original)
Tiny, smudged text: Making tiny, smudged text readable
Large images and large scales: Images larger than about 1 megapixel, or enlarging beyond 4x

Image Upscaler FAQ

Is this image upscaler free?: Yes. There is no sign-up, no login and no usage limit. Nothing to install; it runs in your browser.
Are my images uploaded to a server?: No. Upscaling runs entirely inside your browser. The only network request is the first-time download of the AI model (about 5 MB). Neither your image nor the upscaled result is sent anywhere.
How is this different from resizing an image to a larger size?: Resizing only stretches the existing pixels, so edges turn blurry or jagged. This tool uses AI to rebuild edges and textures as it enlarges, so the result stays sharp at 2x or 4x. If you need an exact size or want to make an image smaller, use the Image Resizer instead.
How large can the image be?: It handles images up to about 1 megapixel (around 1024×1024 or 1280×800 px). That limit comes from processing in the browser; shrink larger images before choosing them.
How long does upscaling take?: Processing runs on your device, so it takes from tens of seconds to a few minutes depending on its performance. Smaller images finish faster, and phones take longer than computers.
Does it work on a phone?: Yes, but it takes longer than on a computer, and processing may stop if you close the screen or switch apps. Keep this page open until it finishes. If an iPhone photo in HEIC format won't load, convert it to JPEG with the HEIC converter first.
Can I upscale a PNG with a transparent background?: Yes. Transparent areas stay transparent and the result is saved as PNG. JPEG and WebP images are saved in their original format.