Contrast Adjuster
Increase or reduce image contrast with a live preview.
Processed entirely in your browser. Your image is never uploaded to a server.
- Slider from flat to high contrast.
- Live preview.
- Original resolution and format kept.
- Runs in your browser.
Why this is private
- Processed entirely in your browser. Your image is never uploaded to a server.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
Raises or lowers image contrast with a slider and a live preview — add punch to a flat photo or soften an overly harsh one.
How to use it
- 1Add an image.
- 2Drag the contrast slider.
- 3Download the result.
Frequently asked questions
What people use it for
Add punch to a flat photoWiden the tonal range of a hazy or overcast shot so it looks less grey.
Soften a harsh, high-contrast imageReduce contrast to recover detail lost in deep shadows or bright highlights.
Make a chart or screenshot clearerBoost contrast so lines, labels and UI elements stand out in a doc or slide.
Related guides
- How to resize a photo and signature for online formsApplication portals want the photo and signature at exact pixel sizes and tiny file sizes. Here's how to hit both without an app.
- How to compress images for the web without them looking badWhy images make pages slow, how much quality you can drop before anyone notices, and a repeatable way to hit a size target.
- How to resize an image without losing qualityWhat 'without losing quality' really means when you resize, why enlarging is different from shrinking, and how to keep proportions intact.
- JPG, PNG or WebP: which image format should you use?A practical guide to picking an image format — what each one is good and bad at, and when to convert.
Related tools
All image toolsBrightness & Contrast AdjusterAdjust brightness and contrast together, in one pass, with a live preview.Brightness AdjusterBrighten or darken an image with a live preview.Saturation AdjusterBoost or mute image colour with a live preview.Image FiltersApply photo filters — vintage, warm, cool, fade and more — with adjustable intensity.
Ready to use Contrast Adjuster?
Contrast Adjuster