WEBP Won't Open? Convert to HDR Instantly
Fast, instant WEBP to HDR conversion. No signup required. Just drop your .webp file and get .hdr in seconds.
Batch Settings
Transparency will be lost
WEBP supports transparency, but HDR does not. Transparent areas will be filled with a solid color (typically white). If you need transparency, consider converting to PNG or WebP instead.
Animation frames will be lost
WEBP supports animation, but HDR does not. Only the first frame (or a representative frame) will be preserved. If you need animation, consider converting to WebP or GIF instead.
Some metadata may not survive
Your WEBP file may contain EXIF, XMP, ICC metadata. HDR has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
About WEBP to HDR Conversion
Dealing with a WEBP file that won't open on your device? You're not alone — WEBP compatibility issues are one of the most common reasons people search for a file converter. WebP is Google's modern image format offering both lossy and lossless compression at 25-35% smaller sizes than JPG/PNG.
The fix is simple: convert your WEBP 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.
Full Name: WEBP uses WebP Image, while HDR uses Radiance HDR Image. Compression: WEBP uses Lossy & Lossless, while HDR uses Lossless. Transparency: WEBP uses Yes, while HDR uses No. WEBP supports transparency, but HDR does not. Transparent areas will be filled with a solid color (typically white). If you need transparency, consider converting to PNG or WebP instead.
CocoConvert processes your WEBP 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 specifically need a HDR file for your workflow. Common misconception: ""My file's transparent background will carry over to HDR"" — in reality, hdr doesn't support transparency. transparent areas become solid (usually white). save as png or webp if you need transparency.
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 WEBP to HDR
- 1
Add your WEBP file
Drag and drop your .webp 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 WEBP to HDR
Your WEBP image is decoded into raw pixel data, then re-encoded as HDR.
Your WEBP file is decoded — the compressed/stored pixel data is expanded into raw RGBA (with alpha channel) pixels
Transparency is resolved: transparent pixels are composited onto a white background
Pixels are re-encoded using Radiance HDR Image's lossless compression
Metadata (EXIF, ICC profiles) is transferred where HDR supports it
The HDR file is saved and ready for download
WEBP vs HDR — Detailed Comparison
| Feature | .WEBP | .HDR |
|---|---|---|
| Full Name | WebP Image | Radiance HDR Image |
| Compression | Lossy & Lossless | Lossless |
| Transparency | Yes | No |
| Animation | Yes | No |
| Color Depth | 8 bits/channel (24-bit + alpha) | 32-bit float (RGBE encoding) |
| HDR Support | No | Yes |
| Typical File Size | 30–35% smaller than JPEG at same quality | 5–50 MB |
| Platform Support | Very Wide | Very Limited |
| Browser Support | modern browsers | none |
| Year Created | 2010 | 1985 |
| Open Standard | Yes | Yes |
Should You Convert WEBP to HDR?
When to Convert
- ✓When you specifically need a HDR file for your workflow
When NOT to Convert
- ✗You need to preserve transparent areas — HDR doesn't support transparency
Consider alternatives:
Common Mistakes When Converting WEBP to HDR
"My file's transparent background will carry over to HDR"
HDR doesn't support transparency. Transparent areas become solid (usually white). Save as PNG or WebP if you need transparency.
"My animated WEBP will stay animated after conversion"
HDR does not support animation. Only a single frame will be saved. Use WebP or GIF to preserve animation.
Frequently Asked Questions
Why won't my WEBP file open?
WEBP 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 WEBP 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 WEBP to HDR?
WEBP supports transparency, but HDR does not. Transparent areas will be filled with a solid color (typically white). If you need transparency, consider converting to PNG or WebP instead. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my WEBP 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 WEBP 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.