Transform Photos into HDR
Instantly boost brightness, contrast, and color depth for High Dynamic Range displays. Pure client-side processing—your images never leave your device.
Drop your image here
or click to browse • Supports JPG, PNG, WebP
Original
HDR Enhanced
HDR Adjustments
Fine-tune the enhancement parameters
Size
30
Mask Feather
0
HDR Boost
50
SDR Darken
40
Highlights
-20
Shadows
30
Saturation
25
Vibrance
30
Clarity
15
01
How It Works
Advanced client-side processing to unlock the hidden potential in your images
1
Client-Side Processing
Your photos never leave your device. All processing happens right in your browser using JavaScript Canvas API for maximum speed and privacy.
100% Private
2
Mask-Based HDR Blending
Unmasked areas are darkened (SDR) and masked areas are boosted (HDR), then smoothly composited based on mask opacity for a seamless high-dynamic range look.
HDR Core
3
True Rec.2020 PQ Export
sRGB pixels are mapped to linear light, transformed to Rec.2020, and encoded with the SMPTE ST 2084 (PQ) transfer function targeting 4000 nits.
WYSIWYG
Processing Pipeline
flowchart LR
subgraph INPUT["📷 Input"]
A[Original Image
sRGB] M[Mask Data
0=SDR 1=HDR] end subgraph PREVIEW["👁️ Preview Generation"] B[Linear RGB] C[Darken SDR
Layer] D[Boost HDR
Layer] E[Blend by Mask] F[Adjustments] end subgraph EXPORT["📤 Export Encoding"] G[Resize] H[Linear Rec.2020] I[PQ Transfer] J[PNG + iCCP] end A --> B M --> E B --> C B --> D C --> E D --> E E --> F F --> G --> H --> I --> J
sRGB] M[Mask Data
0=SDR 1=HDR] end subgraph PREVIEW["👁️ Preview Generation"] B[Linear RGB] C[Darken SDR
Layer] D[Boost HDR
Layer] E[Blend by Mask] F[Adjustments] end subgraph EXPORT["📤 Export Encoding"] G[Resize] H[Linear Rec.2020] I[PQ Transfer] J[PNG + iCCP] end A --> B M --> E B --> C B --> D C --> E D --> E E --> F F --> G --> H --> I --> J
0ms
Server Upload
60fps
Real-time Preview
∞
Privacy
PNG
Optimized Export