In-browser · Privacy-first
Adjust the tone curve. See the photo change.
Adjust curves on real photos, watch the histogram respond, and compare before/after — in the browser.
Real curve editor
Drag points on a live tone curve — the same tool photographers use in Lightroom and Photoshop.
Live histogram
Watch the brightness distribution update in real time as you bend the curve.
Before / after
A split slider lets you compare your edit against the original instantly.
Your own photos
Upload any image locally. It is processed in your browser and never sent to a server.
The tool
A live curve editor with a histogram and before/after
Adjust the curve directly, with a live histogram and a before/after slider — no screenshots, no installs.
Open the curve editor- What a curves adjustment actually does
- How to read the axes and the histogram
- Adding contrast with an S-curve
- Lifting blacks and crushing whites for a matte fade
- Color grading with individual R, G, and B channels
- Exporting your finished image as PNG or JPG