Image Upscaler
Upscale images 2x or 4x with this free online AI image upscaler: enlarge photos, add detail and fix blur and JPEG noise. Runs in your browser, no upload.
Processed locally in your browserHow?
This tool runs in this browser tab. The files, text and values you enter are not uploaded to clkr.work servers — closing the tab clears them. Anonymous usage events (such as which button was pressed) are counted, never your content. Privacy policy
What next?
Found it useful? Share Image Upscaler
Free, no sign-up, works in the browser — send it to a friend or add it to your site.
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How to use Image Upscaler
- 1Drop a JPG, PNG or WebP image onto the page or tap Upload image
- 2Choose 2× or 4× and the PNG or JPG format
- 3Press Upscale image, compare before and after, then download the result
Frequently asked questions
How do I upscale an image for free?▾
Upload the image, pick 2× or 4× and press Upscale image. It is free, adds no watermark and needs no signup.
Does it really add detail?▾
Yes. It uses Real-ESRGAN, an AI model trained to rebuild sharp edges and textures, so the enlarged image looks crisp instead of blurry or pixelated. It also cleans up JPEG artifacts and noise.
How long does it take?▾
Small photos are ready in a few seconds. A large image at 4× can take a minute or more because the AI runs on your own device. 2× is about four times faster.
Is there a size limit?▾
Very large images are reduced before enhancing so your browser does not run out of memory. For the best result, start from a photo under about 1000 pixels wide and use 4×.
Are my photos uploaded?▾
No. The AI model is downloaded once and runs in your browser, so your photos never leave your device.
Embed Image Upscaler on your website▾
Paste this snippet into your page. The embedded tool runs in your visitor's browser and shows a small “Powered by clkr.work” link.