Enhance image quality
Upscale a photo up to 4× and automatically improve sharpness, contrast, colors and noise, comparing before and after with a slider.
How to useEnhance image quality.
Available in: 
Enhance image quality: what it is for
Upscale small photos 2, 3 or 4 times and improve sharpness, noise, contrast and colors with automatic adjustments. Compare before and after with a slider and see on the histogram how the tones spread out. Works with JPG, PNG, WebP, HEIC and other formats.
Everything runs in your browser: nothing you paste or open is sent to a server.
How to use
- Choose the image.
- Adjust the upscale and controls.
- Compare and download the enhanced image.
When to use it
- Upscale small photos for printing.
- Rescue dull or dark photos.
- Improve product images.
Frequently asked questions
Does the tool recover details that aren't there?
It doesn't invent detail like generative AI tools. It upscales with high-quality interpolation, reduces noise, enhances edges (unsharp mask), fixes contrast and livens up colors, which makes small, dull or slightly blurry photos much more presentable.
What does the histogram show?
The distribution of tones, from black (left) to white (right). A dull photo has its histogram squeezed in the middle; after auto contrast it spreads across the whole range.
What is the maximum size?
The result is limited to about 40 megapixels so the browser doesn't freeze. If the upscale goes beyond that, it is reduced automatically.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 are free.