What Auto does
Auto makes three gentle corrections. It sets levels from percentiles, which means it finds the darkest and brightest few percent of the photo and stretches the range so shadows reach near black and highlights near white. It nudges white balance toward neutral. And it adds a little saturation. On a flat, hazy or slightly gray photo, that alone often does most of the work.
Auto is ordinary image arithmetic. It does not recognize what is in the picture, so it treats a snow scene and a night street by the same rules. That is why the sliders are there.
The sliders, and when to reach for each
All the controls preview live on a screen-sized copy, so you can drag freely.
Shadows and Highlights are often the most useful pair. Lifting one and lowering the other evens out a photo with a bright sky and a dark foreground.
- Strength scales how much of the Auto correction is applied. Turn it down if Auto went too far.
- Exposure brightens or darkens the whole picture.
- Contrast widens or narrows the gap between light and dark.
- Shadows lifts or deepens the dark areas without moving the bright ones much. Good for faces in shade.
- Highlights pulls back or pushes bright areas. Lower it to bring back a washed-out sky.
- Saturation makes colors stronger or quieter.
- Warmth moves the color toward amber or toward blue.
Getting a natural result
Small moves add up. Change one slider at a time and use Hold to compare against the original often; it is easy to drift into an over-cooked look without noticing. Skin is the best guide. If faces start to look orange or gray, back off Saturation and Warmth.
A quick check for overdoing it: look at the darkest and brightest parts of the picture. If shadows have turned to flat black or highlights to blank white, Contrast or Exposure has gone too far. Ease back until both ends still show some texture.
When you are happy, press Apply. The edit is then worked out at full resolution and saved as a new version in History, so you can return to it or step back.
When another tool fits better
For a photo that is mostly too dark, Low-light enhancer lifts shadows by local contrast, which handles deep darkness better than an overall exposure push. For a strong color cast, such as everything looking yellow under indoor bulbs, Auto colour correction is more targeted. For softness, use Photo sharpener after enhancing, not before, so you are not sharpening noise you later brighten.
What it will not do
- It is a conventional edit. It does not recognize subjects or scenes, so Auto can misjudge snow, night shots or deliberate moody lighting.
- It cannot rescue focus blur or recover highlights that are pure white in the original.
- Strong settings on a noisy photo make the noise more visible.
- Edits apply to the whole image, not to selected areas.
Devices and downloads
No download — ordinary image arithmetic. There is no model, so the WebGPU or WebAssembly question does not come up. The preview is computed on a screen-sized copy for quick feedback, and Apply processes the full-resolution photo in this tab.
Instant edit: Ordinary image arithmetic. No model, no download, works in any modern browser. See what is stored on this device.
Step by step
- Open the photo. Drop, paste or choose the image that looks flat or dull.
- Press Auto. Get balanced levels, white balance and color as a starting point.
- Fine-tune. Adjust Strength, Exposure, Contrast, Shadows, Highlights, Saturation and Warmth.
- Apply and export. Apply at full resolution, compare with the original, then save.
Questions about photo enhancer
Is the photo enhancer an AI tool?
No. It is a conventional edit made of ordinary image arithmetic: levels, white balance and color adjustments. Nothing is downloaded.
Auto made my photo look too strong. What should I change?
Lower the Strength slider. It scales back the Auto correction while keeping any other slider changes you made.
How do I bring back a sky that looks washed out?
Lower Highlights. If the sky is pure white in the original, though, there is no detail left to bring back.
Does the preview show the final quality?
The preview runs on a screen-sized copy for speed. Pressing Apply works the edit out on the full-resolution photo.