Brightness & Contrast Editor

Brightness & Contrast Editor rescues underexposed, washed-out or flat-looking photos with three precise sliders: brightness, contrast and saturation. It is the fastest fix for indoor shots that came out dark, scanned documents that look gray instead of white, and product photos that need a little extra pop before listing.

All three adjustments preview in real time and are then applied to the full-resolution image on export, so what you see is exactly what you download. A one-click reset returns everything to the original values if you overshoot.

Nothing you open here is uploaded. The entire operation runs inside your browser tab using the Canvas API and WebAssembly, which means there is no upload queue, no server-side file-size cap, no watermark and no account. You can even go offline after the page has loaded and the tool will keep working. When you close the tab, every trace of your file disappears from memory — which is exactly what you want when you are handling ID documents, contracts, private photos or unreleased product shots.

Because the work happens on your own hardware, processing is effectively instant for typical photos and still comfortable for 50-megapixel files on a modern laptop or phone. There are no daily limits, no paywalls after five files, and no queue behind other users. Everything is free, unlimited and ad-supported, and the layout reserves fixed space for ads so the page never jumps while you work.