Image Tools

Image Enhancer

This free Image Enhancer fixes dull, tinted, soft or grainy photos in your browser. Auto enhance stretches the tones, corrects the colour cast and sharpens edges in one click; sliders fine-tune each step, Document mode cleans up photos of paper, and a before and after divider shows the change. It uses classic image processing, not AI, so nothing is uploaded.

Runs in your browser. Your files and text never leave your device - nothing is uploaded.

Click or drag a photo here
JPG, PNG, WebP. Processed in your browser, nothing is uploaded.

Enhance a Photo in Your Browser

The Image Enhancer fixes the problems most phone photos have: dull or faded tones, a yellow or blue colour cast, soft edges and grain. Add a photo and Auto enhance runs at once; drag the divider to compare it with the original, adjust any slider, and download the result at full size or twice as large.

It works with classic image processing rather than AI. That has two consequences worth knowing. Your photo never leaves your device, because everything runs on a canvas in the browser. And the enhancer brings out detail the photo already holds but does not invent new detail, so it will not rebuild a blurred face or make unreadable text readable.

How to Use the Image Enhancer

  1. 1

    Add a photo

    Click the upload area or drag a JPG, PNG or WebP onto it. The photo opens in your browser and Auto enhance is applied straight away.

  2. 2

    Compare before and after

    Drag the divider across the photo, or use the Compare slider below it: the left side is your original, the right side is the enhanced version.

  3. 3

    Fine-tune

    Adjust Sharpen, Noise reduction, Colour correction, Brightness, Contrast, Saturation and Warmth, or tick Document mode for a photo of paper. Show original turns every adjustment off.

  4. 4

    Download

    Choose Original size or 2x larger and JPG or PNG, then press Download enhanced photo. The full-size photo is processed on your device and saved with -enhanced added to its name.

iPhone photos saved as HEIC may not open in every browser; convert them first with the HEIC to JPG converter.

What Each Control Does and When to Use It

ControlWhat it doesBest for
Auto enhanceAuto levels, 50% colour correction, light noise reduction, 60% sharpen, a touch of contrast and saturationA quick fix for most phone photos
Auto levelsStretches the darkest tones to black and the brightest to whiteDull, faded, hazy or underexposed photos
Colour correctionRemoves an overall yellow, blue or green castIndoor light, old prints, screenshots of scans
SharpenStrengthens edges that are already there (unsharp mask)Slightly soft photos, text in photos
Noise reductionSmooths grain while leaving edges aloneNight and low-light photos
Document modeGreyscale with paper pushed to white and ink to darkPhotos of receipts, notes, forms and pages
2x largerEnlarges with high-quality resampling, then sharpensMaking a small photo print or display bigger

The steps run in a fixed order: noise reduction first, then colour correction, levels and the tone sliders, and sharpening last. Smoothing grain before sharpening matters, because sharpening a noisy photo first would make the grain stronger.

How the Enhancement Works

  • Auto levels reads the brightness of every pixel, ignores the darkest and brightest 0.5% so a few stray pixels do not decide the result, and stretches what is left to fill the full range from black to white, at most two and a half times, so a very flat photo does not turn grainy. Only the brightness is stretched; each colour keeps its place relative to it, so the colours stay balanced while the photo gains contrast.
  • Colour correction assumes a typical photo averages out to neutral grey and scales each colour channel towards that. It removes the orange of indoor bulbs or the blue of shade. The correction is capped, so a sunset or a green field is not pushed to grey.
  • Sharpen is an unsharp mask: the tool blurs a copy of the photo, takes the difference, and adds it back. Edges get crisper; areas with only tiny differences are left alone so skin and sky do not turn gritty.
  • Noise reduction blends each pixel with its neighbours only where the difference is small, which is what grain looks like, and leaves strong differences, which are edges and text, untouched.

What a Non-AI Enhancer Cannot Do

Apps that restore faces or turn a tiny thumbnail into a sharp portrait use AI models that generate plausible new detail, usually on a server you upload the photo to. This tool does not. It cannot recover a face from a heavily blurred photo, remove motion blur, read a number plate that is a few pixels wide, or add detail when enlarging. What it does well is the everyday fix: making a slightly dull, tinted, soft or grainy photo look its best, and making photos of documents clean and legible.

Related tools

For manual brightness, contrast and saturation only, use the photo editor. To trim the frame use the image cropper, to set exact pixel dimensions the image resizer, and to make the enhanced file smaller for a form or email the image compressor. The full set is in Image Tools.

Frequently Asked Questions

Reviewed by Raja Jahangir · Last reviewed: November 4, 2026

How do you enhance a photo online without uploading it?

Open the photo in a browser-based enhancer and press Auto enhance: it stretches dull tones, removes the colour cast and sharpens edges on your own device. Compare before and after, adjust sharpen, noise and warmth, then download a JPG or PNG. Classic enhancement improves existing detail but cannot rebuild a badly blurred face.