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Image color processing tool
Free & Focused
Wide Gamut Processing
High Dynamic Range (HDR) and wide color gamut image processing
Local Processing
All processing in your browser. No data uploaded to servers
Tonemapping
Convert HDR to SDR with exposure control
Hue Shift
Rotate colors around the hue spectrum
Color Inversion
Invert RGB color channels
Quaternion Rotation
3D color space rotation using quaternions
Color Clusterization
Reduce colors to limited palette using k-means clustering
Resize
Reduce image dimensions
Gaussian Blur
Gaussian blur filter
Median Filter
Noise reduction while preserving edges
🖥️ GPU-accelerated processing • 🎯 Powered by WebGPU
Frequently Asked Questions
- Is KOLORE.app free?
- Yes. KOLORE.app is free to use and runs entirely in your web browser. No account or payment is required.
- Are my images uploaded anywhere?
- No. All processing happens locally on your device using WebGPU. Your images are never uploaded to a server.
- What is WebGPU, and do I need it?
- WebGPU is a browser API that runs image processing on your graphics hardware. KOLORE.app requires a WebGPU-capable browser such as Chrome 113+ or Edge 113+.
- Does it support HDR and wide-gamut color?
- Yes. KOLORE.app processes high dynamic range (HDR) and wide color gamut images in linear light, and can tonemap HDR to SDR with exposure control.
- Which image formats are supported?
- KOLORE.app opens common formats including PNG, JPEG, WebP, and GIF, along with HDR image formats for high dynamic range workflows.
- Does it work offline?
- Once the page has loaded, image processing runs locally and does not depend on a network connection.