Enhance Image

It measures the brightness histogram, ignores the darkest and brightest one percent of pixels, and stretches the remaining range to fill 0–255. That simple levels adjustment restores contrast in flat or hazy shots. A light unsharp-mask pass then adds crispness. It is deterministic image processing, not an AI model, so it will not invent detail.

The figure is how much the tonal range was expanded. A photo that already uses the full range reports around 0%, meaning there was little to stretch. A washed-out photo might report a much larger number because the range was compressed before enhancing.

Auto enhance replaces the working image, so pressing it twice enhances the already-enhanced result. If the second pass looks too strong, press Reset and start again rather than stacking it. The manual sliders always build on the current working image.

The operations redraw the image once at full resolution, so the pixel dimensions are unchanged. Exporting to a lossy format re-encodes the pixels according to the quality slider, so keep it high for important photos and retain the original file.

Auto enhance improves contrast and adds mild sharpening, which can make a slightly soft photo look cleaner. It cannot recover detail that was never captured, so a genuinely out-of-focus photo will stay out of focus. Use the Upscale Image tool if you need larger dimensions rather than clarity.

PNG, WebP, and AVIF preserve transparency. JPG has no alpha channel, so transparent pixels are flattened onto white before encoding to avoid black boxes.

No. The file is decoded, processed, and re-encoded entirely in your browser. Nothing is sent to ImgSprint or any third party.