Drop image here or click to browse
Image color processing tool
Free & Focused
Wide Gamut Processing
Open HDR photos from your phone (JPEG and HEIC/HEIF with gainmaps) and edit in wide color gamut
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
Local & Private
Mobile Ready
Built mobile-first. Drag, drop, and edit from your phone or tablet.
No Cloud Storage
Your images never leave your device. Everything is processed locally.
On-Device AI
AI features run locally on your device — never through an external cloud API. We run a mix of production-grade slim models and proprietary models built for a small footprint and edge execution. No data is uploaded or used to train models.
Free, No Login
Free to use with no account required.
Frequently Asked Questions
- Is KOLORE.app free?
- Yes. KOLORE.app is free to use and runs entirely in your web browser. No login, account, or payment is required.
- Does it work on my phone?
- Yes. The editor is built mobile-first and works with touch on modern mobile browsers that support WebGPU.
- 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 opens HDR photos from phones — JPEG and HEIC/HEIF images with gainmaps (Android Ultra HDR and Apple HDR) — processes them in linear light, and can tonemap HDR to SDR with exposure control.
- Which image formats are supported?
- KOLORE.app opens PNG, JPEG, WebP, and GIF, plus HDR phone photos (JPEG and HEIC/HEIF with gainmaps). Radiance .hdr and OpenEXR files are not currently supported.
- Does it use AI, and is my data used for training?
- Some features use AI that runs entirely on your device (in your browser), not through an external cloud API. We use a mix of production-grade slim models and proprietary models built for a small footprint and edge execution. No images or data are uploaded, and nothing is used to train models.
- Does it work offline?
- Once the page has loaded, image processing runs locally and does not depend on a network connection.