Bulk HDR to RAS Converter Online — Free HD Quality
Drag and drop your multiple HDR files into this free online HDR to RAS converter (.hdr to .ras), and click the Convert button to bulk convert them to RAS format in HD quality. Use the quality slider to fine-tune your RAS output, then download your converted files one by one or as a single ZIP — your original HDR files are removed from our servers right after.
To:
85%
Drop images here or click to browse
PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
HDR vs RAS — File Format Comparison
| Feature | HDR | RAS |
|---|---|---|
| File Extension | .hdr | .ras |
| MIME Type | image/vnd.radiance | image/x-sun-raster |
| Compression Type | Lossless | Lossless |
| Transparency Support | No | No |
| Animation Support | No | No |
| Metadata Support | Yes | Yes |
What Is HDR Format?
Radiance HDR format for high dynamic range images.
- Compression: Lossless
- Transparency: Not supported
- Animation: Not supported
What Is RAS Format?
Sun Raster format for Unix systems.
- Compression: Lossless
- Transparency: Not supported
- Animation: Not supported
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