4K image upscale
Upscale an image to 4K for a wallpaper, a TV slideshow, or a video thumbnail. A 960 × 540 image upscaled 4x becomes 3840 × 2160, which is 4K.
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Upscale
AI Image Upscaler
Upscale an image 2x, 4x, or 6x in one click with a free AI image upscaler. Upload a JPG, PNG, or WebP and the AI upscaler returns a sharper, larger image with no watermark.
AI image upscaler results: before and after
Anime frames and illustrations need clean lines and flat color. The AI image upscaler keeps outlines sharp and removes compression blocks as it upscales the image, so drawn faces and line art stay true to the original image.
What is an AI image upscaler?
An AI image upscaler makes a small picture bigger without the blur you get from stretching it. Ordinary resizing spreads the same pixels over a larger area, which is why an enlarged photo looks soft and blocky. An AI upscaler is trained on pairs of small and large images, so when it upscales an image it rebuilds clean edges, hair, fabric, and fine lines where plain resizing leaves mush. People reach for it to AI upscale an image when the only copy they have is too small: an old phone photo, a product shot from a supplier, a picture saved from a chat.
This AI image upscaler works in the browser on a phone or a computer, with nothing to install. Upload the image, choose 2x, 4x, or 6x, and download the result with no watermark. Every image costs 1 credit, whichever scale you pick.
How it works
How to upscale an image with the AI image upscaler
Step 01Upload your image
Drag an image into the AI image upscaler from your phone or computer. You can upscale JPG, PNG, and WebP images online.
Step 02Choose a 2x, 4x, or 6x upscale
2x is selected by default and suits most photos. Choose 4x for a small image and 6x for one that is barely larger than a thumbnail.
Step 03Download the upscaled image
Most images upscale in seconds. Drag the slider to compare the image before and after, then download the upscaled image. The AI image upscaler adds no watermark.
Upscale image to 4K for prints, products, and AI art
A larger, cleaner file gives a small image more places to go. Here are six common jobs for an AI image upscaler.
Upscale AI images
Many AI image generators stop at about 1024 pixels. Use the AI image upscaler to upscale AI images 2x before you print them, post them, or use them as backgrounds.
Upscale product images
Marketplaces ask for large images so shoppers can zoom in. Upscale a small supplier image so the listing meets the size rule and stays sharp when zoomed.
Upscale old and scanned photos
Old digital photos and small scans look soft on a modern screen. Upscale the image to bring back detail in faces, clothing, and backgrounds.
Upscale image resolution for print
Print needs far more pixels than a screen. Upscale image resolution before you send the file to a print shop, so the poster or photo print does not come out blocky.
Upscale image quality for saved pictures
Images saved from chats and social apps are compressed and small. Upscale image quality with the AI upscaler before you reuse the image in a post or a slide.
Why choose us
Why use this free AI image upscaler
A free image upscaler often adds a watermark or charges more for the larger sizes. Here is what this AI image upscaler gives you instead.
No watermark on any upscaled image
Free and paid accounts download the same clean upscaled image, ready to publish or print.
One price for every upscale
A 2x, 4x, or 6x upscale costs 1 credit per image. The largest upscale costs the same as the smallest.
Pay only for what works
A failed image is refunded automatically, so credits only go to upscaled images you can use. Results are saved to your projects, and uploads are used only to upscale your image.
Upscale four images per run
Paid accounts upscale 4 images in one run with the AI image upscaler and download every result together.
AI image upscaler FAQ
Straight answers about the free AI image upscaler: blurry photos, which scale to choose, print sizes, 4K, and privacy.
You can start for free. A new account gets free credits on sign-up, and each image costs 1 credit at 2x, 4x, or 6x. Free results have no watermark and are the same full-size files paid users get. When the credits run out, you can buy a credit pack or subscribe to a plan.
It depends on why the photo is blurry. If the image is soft because it is small or heavily compressed, the AI image upscaler helps a lot: edges turn crisp, blocky areas smooth out, and the picture holds up at a larger size. If the photo is out of focus or blurred by movement, that detail was never captured, and no image upscaler can bring it back. You get a larger image that still looks soft. Try one image first and check the result with the compare slider.
Work backwards from the size you need. Divide the width you want by the width of your image, then pick the next scale up. A 1000-pixel image needs 2x for a 2000-pixel web banner and 4x for a 4000-pixel print. Bigger is not always better: a higher scale means a heavier file, and an AI image upscaler cannot add detail a tiny image never had. Images over 2048 pixels on the longest side are reduced to 2048 before the upscale, so 2x is usually enough for a photo straight from a phone.
Print shops usually ask for 300 pixels per inch, so divide the pixel size by 300 to get the print size in inches. A 1200 × 1800 image only covers a 4 × 6 inch print. Run it through the AI image upscaler at 4x to get 4800 × 7200, and it is ready for a 16 × 24 inch poster. A canvas or poster that people view from a distance looks fine at 150 pixels per inch, which doubles those sizes.
Yes. 4K is 3840 × 2160 pixels. Upload a 1920 × 1080 image and choose 2x, or a 960 × 540 image and choose 4x, and the AI image upscaler returns exactly 4K. For other sizes, pick the scale that takes the width past 3840. A wallpaper or TV scales the extra pixels down without any loss.
Download the picture from your AI generator at the largest size it offers, then upload it here. Most generators stop around 1024 pixels, which looks fine on a phone and falls apart on a print or a large monitor. That image becomes 2048 pixels at 2x, 4096 at 4x, and 6144 at 6x. The AI image upscaler enlarges the picture you already made and keeps its composition. It does not generate a new one.
The AI image upscaler enlarges the image you upload and does not redraw it, so faces, logos, and layouts stay as they are. That makes it safer than asking a chatbot to recreate a photo, which often alters a face or rewrites the text. Two limits are worth knowing. Text that is too small to read in the original will not become readable, and a transparent background comes back white.
Your uploads are used only by the AI image upscaler to upscale your image and are not shown publicly. Upscaled images are stored in your account projects. Free results are kept for 7 days, paid results stay until you delete them.
Upscale an image in seconds
Try the free AI image upscaler now
Upload an image, pick a 2x, 4x, or 6x upscale, and download a larger, sharper image with no watermark.