RGB curves editor

  1. Choose File
  2. Options
  3. Result

Your image stays in this browser. No upload or paid API is used.

JPEG, PNG or WebP; up to 20 MB, 12 megapixels and 8192 pixels per side. Animated files use only the first frame. Export is an 8-bit browser-rendered image, without original metadata or a preserved print color profile.

How to use this tool

Shape contrast and individual color channels with a five-point tonal curve.

  1. Choose the source image. Check its dimensions and the original preview.
  2. Choose RGB or one channel. Set output values for input tones 0, 64, 128, 192 and 255; inspect the curve diagram.
  3. Press Process image. Compare the result with the original, choose PNG, JPEG or WebP, then download the result. Changing a setting clears the previous result.

This tool linearly connects five control points. It does not reproduce every curve mode or spline in a desktop editor.

How to use this tool →

Supported formats

This tool accepts these formats. Uncommon containers and modern web formats may be normalized or converted on the server before processing.

Images
APNG AVIF BMP DDS DPX EXR FITS FTS GIF HDR HEIC HEIF ICO J2C J2K JPC JPE JPEG JPG JP2 JPF JPM JPS JXL MJ2 PAM PBM PCX PDN PGM PNG PNM PPM PSD TGA TIF TIFF WBMP WEBP SVG

A damaged file or a non-standard codec can still fail even when the extension is supported.

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