How to use
- Pick a panel (RAW, Color or Spatial) and upload an image.
- Move the sliders and watch the preview update. Use undo, redo or reset in the toolbar if needed.
- Click download to save the result as a PNG.
The RAW panel handles tone and white balance with sliders for exposure, contrast, highlights, shadows, temperature, tint and saturation. Exposure works in photographic stops, contrast uses a standard contrast curve, and highlights and shadows lift or lower the brighter and darker parts of the image. Temperature shifts the balance toward warm or cool, and tint moves it along the green and magenta axis. Whites and blacks move the white and black points: raising whites brightens the top of the tonal range, and raising blacks lifts the darkest tones.
The Color panel is a per-color adjustment with eight channels: red, orange, yellow, green, aqua, blue, purple and magenta. For each channel you can shift the hue by up to 30 degrees either way, and change saturation and lightness by up to 100 in either direction. A change affects pixels whose hue is within 40 degrees of the channel's hue, with the strongest effect at the center, so neighboring colors blend smoothly.
The Spatial panel has two sliders from 0 to 100. Sharpening blends the image with a 3 by 3 sharpening kernel, and denoise blends it with a simple 3 by 3 average blur. They are quick and simple filters, so they work best at low to moderate values.
Be aware of one limit. The tool works on images your browser can open, such as JPG, PNG and WebP. It does not include a camera RAW decoder, so files straight from a camera in a proprietary RAW format will not load. The on-screen preview is scaled down to 1200 pixels wide to stay fast, but the download is rendered again at the original resolution with the same settings. Each panel keeps its own image and history and saves under its own file name.
Editing happens in your browser; the image is not uploaded.
FAQ
Can I open camera RAW files such as CR2 or NEF?
No. The editor has no RAW decoder. It works with images that the browser can display, such as JPG, PNG and WebP.
What size is the exported image?
The PNG you download has the original image's full resolution. Only the on-screen preview is scaled down to 1200 pixels wide.
How does the Color panel choose which pixels to change?
It selects pixels by hue. Those within 40 degrees of a channel's hue are affected, with less effect farther away.
Do the panels share one image?
No. Each of the three panels has its own upload, settings and history.
Is my photo uploaded?
No. All editing is done in your browser.