HDR to DDS Converter
Upload HDR, EXR, or UltraHDR JPEG files and encode them directly to DDS. BC6H is the recommended HDR-preserving route for DirectX and desktop pipelines.
Related Resources
Step 1: Select Image
- Supported formats: PNG, JPG, WebP, BMP
- Image dimensions must be multiples of 4 (e.g., 512×512, 1024×1024)
HDR input note
HDR, EXR, and UltraHDR JPEG files can be used as inputs. Most current output paths still tone map into the RGBA8 encode pipeline; use DDS BC6H, KTX2 RGBA16F, or KTX2 RGBA32F when you need to preserve HDR source data as much as possible.
Features
Browser-based
No server upload required, all processing happens in your browser
Full BCn Compression
Support for all BC1-BC7 compression formats (DXT1/3/5 and modern BCn)
Fast Encoding
WebAssembly-accelerated encoding for quick results
Multiple Formats
Support for PNG, JPG, WebP, and BMP input formats
Quality Control
Choose from different compression levels and formats
Free to Use
No registration or payment required
How to Use
Upload Image
Drag and drop an image file or click to browse. Ensure dimensions are multiples of 4.
Choose Format
Select the BCn compression format based on your texture type and alpha requirements.
Encode
The image will be compressed to DDS format using WebAssembly for fast processing.
Download
Download the encoded DDS file for use in your DirectX applications.
Frequently Asked Questions
DDS (DirectDraw Surface) is Microsoft's texture container format for DirectX applications, supporting various compression formats.
BC1 offers basic RGB compression without alpha, BC3 adds alpha support, and BC7 provides the highest quality compression with advanced features.
BCn compression works on 4x4 pixel blocks, so image dimensions must be divisible by 4 for proper compression.
DDS is primarily designed for desktop and console platforms. For mobile devices, consider using ASTC or ETC formats.
We support PNG, JPG, WebP, and BMP image formats as input for DDS encoding.
No, all processing happens locally in your browser using WebAssembly. Your images never leave your device.