How to Convert HDR to WEBP — Quick & Free
Fast, instant HDR to WEBP conversion. No signup required. Just drop your .hdr file and get .webp in seconds.
Batch Settings
HDR data will be tone-mapped
Your HDR file may contain HDR (High Dynamic Range) data. WEBP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost.
Color depth reduction: 32-bit → 24-bit
HDR stores up to 32 bits per channel, but WEBP supports only 24 bits. You may notice banding in smooth gradients (like sky or skin tones) where subtle color transitions are lost.
About HDR to WEBP Conversion
Short answer: yes, you can convert HDR to WEBP online for free, and some quality differences may occur depending on the format types. Just upload your .hdr file to CocoConvert, pick WEBP as the output, and click Convert. The whole process takes seconds.
Now for the details. HDR (Radiance) is a high-dynamic-range image format used in lighting and rendering. WebP is Google's modern image format offering both lossy and lossless compression at 25-35% smaller sizes than JPG/PNG. Converting between these two formats lets you improve file compatibility across devices.
Full Name: HDR uses Radiance HDR Image, while WEBP uses WebP Image. Compression: HDR uses Lossless, while WEBP uses Lossy & Lossless. Transparency: HDR uses No, while WEBP uses Yes.
Your HDR file is decoded and re-encoded as WEBP. Your HDR file may contain HDR (High Dynamic Range) data. WEBP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert HDR to WEBP
- 1
1. Upload HDR
Drop your .hdr file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select WEBP
Choose .webp from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .webp file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert HDR to WEBP
Your HDR image is decoded into raw pixel data, then re-encoded as WEBP.
Your HDR file is decoded — the compressed/stored pixel data is expanded into raw RGB pixels
HDR data is tone-mapped to standard dynamic range (8-bit per channel)
Pixels are re-encoded using WebP Image's lossless compression
Metadata (EXIF, ICC profiles) is transferred where WEBP supports it
The WEBP file is saved and ready for download
HDR vs WEBP — Detailed Comparison
| Feature | .HDR | .WEBP |
|---|---|---|
| Full Name | Radiance HDR Image | WebP Image |
| Compression | Lossless | Lossy & Lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Color Depth | 32-bit float (RGBE encoding) | 8 bits/channel (24-bit + alpha) |
| HDR Support | Yes | No |
| Typical File Size | 5–50 MB | 30–35% smaller than JPEG at same quality |
| Platform Support | Very Limited | Very Wide |
| Browser Support | none | modern browsers |
| Year Created | 1985 | 2010 |
| Open Standard | Yes | Yes |
Should You Convert HDR to WEBP?
When to Convert
- ✓Your HDR file won't open on a recipient's device or in an application
- ✓A website, service, or platform only accepts WEBP uploads
- ✓You need a file that works in web browsers
When NOT to Convert
- ✗You want to preserve HDR information — WEBP only supports standard dynamic range
Frequently Asked Questions
Is HDR to WEBP conversion free?
Yes. CocoConvert offers free HDR to WEBP conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is HDR to WEBP conversion?
Most files convert in 2–10 seconds depending on size. Large image files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded HDR file and the converted WEBP file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting HDR to WEBP lose quality?
Your HDR file may contain HDR (High Dynamic Range) data. WEBP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost.
Can I convert WEBP back to HDR?
Yes, CocoConvert supports WEBP to HDR conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.