HDR vs RGF — Comparison & Free Converter
Fast, instant HDR to RGF conversion. No signup required. Just drop your .hdr file and get .rgf in seconds.
Batch Settings
La conversion de fichiers est une tâche courante dans le paysage numérique actuel, et passer du format HDR (High Dynamic Range) au RGF (Radiance Scene Description File) peut s'avérer nécessaire pour diverses applications. Que vous soyez un professionnel de l'imagerie, un chercheur ou un étudiant, cette transformation permet souvent d'intégrer des données lumineuses complexes dans des environnements logiciels spécifiques ou des pipelines de rendu. Le HDR, riche en informations de luminance, est idéal pour capturer la réalité visuelle avec une fidélité exceptionnelle, tandis que le RGF offre une structure optimisée pour la simulation d'éclairage et le rendu photoréaliste. Ce processus de conversion garantit que les nuances de lumière et les détails de luminosité sont préservés, tout en adaptant le fichier à des exigences techniques précises, ouvrant ainsi la voie à des analyses plus poussées ou à des visualisations immersives.
- Simulation d'éclairage architectural (France)
- Rendu de scènes 3D pour l'industrie du jeu vidéo (Québec)
- Analyse de données environnementales pour la recherche universitaire (Suisse)
En France et en Belgique, l'utilisation du RGF est particulièrement répandue dans les bureaux d'études spécialisés en performance énergétique et en conception lumière, en raison de sa compatibilité avec des logiciels d'analyse thermique et lumineuse très utilisés localement.
About HDR to RGF Conversion
HDR or RGF — which format should you use? The answer depends on your needs. Here's a quick breakdown.
HDR (Radiance) is a high-dynamic-range image format used in lighting and rendering. It has niche platform support. RGF is a widely used file format. It has common platform support.
So when should you convert HDR to RGF? This conversion is ideal when you When you need a RGF file. This conversion helps you convert between formats quickly.
Converting HDR to RGF maintains high quality with CocoConvert's optimised encoder settings.
If you've decided RGF is the right choice, CocoConvert makes the conversion effortless. Upload your .hdr file, pick RGF, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert HDR to RGF
- 1
Choose your HDR file
Upload your .hdr file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to RGF
Select .rgf from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large image files.
- 4
Get your RGF file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert HDR to RGF
Your HDR file is decoded and re-encoded as RGF.
Your HDR file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in RGF format
The converted file is ready for download
Format Comparison
HDR
.hdr file
| Extension | .hdr |
| MIME Type | image/vnd.radiance |
| Category | Image |
RGF
.rgf file
| Extension | .rgf |
| MIME Type | image/x-rgf |
| Category | Image |
Should You Convert HDR to RGF?
When to Convert
- ✓When you need a RGF file
Frequently Asked Questions
Should I use HDR or RGF?
It depends on your goal. HDR preserves full quality. RGF preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is RGF higher quality than HDR?
Not necessarily. Converting HDR to RGF maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert HDR to RGF on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for HDR to RGF?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for HDR to RGF?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.