DCX Won't Open? Convert to HDR Instantly
Fast, instant DCX to HDR conversion. No signup required. Just drop your .dcx file and get .hdr in seconds.
Batch Settings
About DCX to HDR Conversion
Dealing with a DCX file that won't open on your device? You're not alone — DCX compatibility issues are one of the most common reasons people search for a file converter. DCX is a widely used file format.
The fix is simple: convert your DCX to HDR. HDR (Radiance) is a high-dynamic-range image format used in lighting and rendering. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Converting DCX to HDR maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your DCX file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you When you need a HDR file.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert DCX to HDR
- 1
Add your DCX file
Drag and drop your .dcx file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick HDR output
Select .hdr as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The image engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .hdr file. For batch jobs, download all at once as a zip.
What Happens When You Convert DCX to HDR
Your DCX file is decoded and re-encoded as HDR.
Your DCX file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in HDR format
The converted file is ready for download
Format Comparison
DCX
.dcx file
| Extension | .dcx |
| MIME Type | image/x-dcx |
| Category | Image |
HDR
.hdr file
| Extension | .hdr |
| MIME Type | image/vnd.radiance |
| Category | Image |
Should You Convert DCX to HDR?
When to Convert
- ✓When you need a HDR file
Frequently Asked Questions
Why won't my DCX file open?
DCX files may not open if your device lacks the right codec or application. Converting to HDR — a more widely supported format — usually resolves this. HDR (Radiance) is a high-dynamic-range image format used in lighting and rendering.
Is it safe to convert DCX to HDR online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting DCX to HDR?
Converting DCX to HDR maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my DCX file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert DCX to HDR on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.