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Runs in your browser. Your photos are not uploaded.

Image Upscaler

Free image upscaler: enlarge a photo 2x, 4x or to 4K in your browser. Nothing is uploaded, no sign-up.

How to Use the Image Upscaler

Pick a photo, choose a size, download. It takes three steps.

  1. 1

    Choose your photo

    Click the upload area or drop in a JPG, PNG or WebP up to 20 MB. The photo opens in your browser and stays on your device, so a private photo is as safe as a public one.

  2. 2

    Pick 2x, 4x or 4K

    2x doubles the width and height, 4x makes each side four times longer, and 4K sets the long side to 3840 px. A photo already at or above the size you pick is refused, so choose a bigger one.

  3. 3

    Download PNG or JPG

    Save the result as PNG, which keeps transparency, or switch to JPG for a smaller file. Compare it with your original first: the model draws new detail, so check faces, small text and thin lines before you use it.

Why Use a Browser-Based Image Upscaler

The model runs on your device, so the limits are different from upload sites.

  • No upload and no allowance

    The upscaling model runs inside your browser tab. Your photo never reaches a server, and there is no sign-up, no queue and no per-image allowance. Use it as often as you like.

  • Limits stated up front

    Input up to 20 MB, output up to 50 megapixels on desktop and 16.7 megapixels on iPhone and iPad. A photo that would go over is refused with a message, not quietly shrunk.

  • Fast with a graphics chip

    With WebGPU, a 383 x 512 photo went to 4x in about a second on an M-series Mac, and a 2000 x 2667 photo to 2x in about three seconds. The first run also loads the model, which took about eight seconds there. Browsers without WebGPU fall back to the CPU, which is much slower.

  • Transparency survives

    PNG output keeps the alpha channel, so logos, stickers and cutouts keep their see-through background. JPG has no transparency, so pick it only when you want a smaller file.

Where an Image Upscaler Helps

Anything that needs more pixels than the file has.

Prints and posters

Take a phone photo up to 4x before sending it to a print shop that asks for more pixels. Check sharp edges first, since the model adds detail.

Product and listing photos

Bring a small supplier image up to the minimum size a marketplace asks for. Look at logos and lettering before you publish.

Old scans and family photos

Enlarge a low-resolution scan so it holds up on a big screen or in a frame. Faces can shift when the model draws detail, so compare the result with the original before you share it.

Slides and screenshots

Give a soft chart image or a screenshot more room so it stays crisp on a projector or a large monitor.

Profile pictures and avatars

Turn a tiny cropped avatar into a larger file that platforms won't stretch and blur.

Game art and pixel graphics

Enlarge sprites, textures and fan art before you drop them into an engine or a wallpaper. PNG output keeps transparent backgrounds, and 2x is a good first try for small pixel art.

Frequently asked questions

Yes. This image upscaler is free with no sign-up, and there is no cap on how many photos you enlarge, because the work happens on your own device.

No. The photo is decoded and upscaled in your browser and never leaves your device. If you close the tab, it is gone.

2x doubles the width and height. 4x makes each side four times longer, so the pixel count grows sixteen times. 4K sets the long side to 3840 px whatever the starting size.

Either it is already at or above the size you picked, or the result would pass the output cap of 50 megapixels (16.7 on iPhone and iPad). Pick a smaller size, or a smaller photo.

JPG, PNG and WebP up to 20 MB. You can save the result as PNG, which keeps transparency, or as JPG.

No. The AI draws plausible detail to fill the new pixels, so the result looks sharper but is not the original scene. Compare it with your photo and check faces, text and logos.

Yes, in a modern mobile browser. iPhone and iPad Safari cap the output at 16.7 megapixels, so very large sizes are refused there. Without WebGPU the model runs on the CPU and takes longer.

No. The tool takes one photo at a time and has no API or app. For bigger jumps use the 4K or 8K pages.

An image upscaler makes a picture bigger and has an AI model fill in the new pixels, instead of stretching the old ones. The result has more pixels and usually looks sharper than a plain resize.

The result is your file, and you need the rights to the original photo. Upscaling does not change who owns it.

It can, at high enlargement or on faces. A 2x result usually stays close to the original, while 4x and 4K ask the model to invent more. Start with 2x if the photo is already decent.

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