Convert PPM to HDR
Convert PPM files to HDR locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert PPM to HDR
- Drop your .ppm files above, or click Upload Files. You can add many files at once.
- HDR is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .hdr files as soon as each one finishes.
What to know about PPM to HDR conversion
- HDR is best for HDR environment maps for lighting 3D scenes, and opens in Blender, 3D renderers and HDR viewers.
PPM vs HDR
| Feature | PPM (Netpbm Portable Pixmap) | HDR (Radiance HDR) |
|---|---|---|
| Compression | uncompressed | lossless |
| Transparency | No | No |
| Animation | No | No |
| Best for | image processing pipelines and scientific code | HDR environment maps for lighting 3D scenes |
| Opens in | GIMP, ImageMagick and Netpbm tools | Blender, 3D renderers and HDR viewers |
PPM (Netpbm Portable Pixmap): A minimal uncompressed color image format from the Netpbm toolkit, popular in image processing pipelines.
HDR (Radiance HDR): A high-dynamic-range RGBE image format commonly used for environment maps and lighting in 3D rendering.
Conversion options
- Resize by width, height or both (aspect ratio is preserved)
- Filters: grayscale, sepia, blur and sharpen
- Custom output file name
Frequently asked questions
Is it safe to convert PPM to HDR here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several PPM files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert HDR to PPM.
Convert PPM to other formats
- PPM to JPG
- PPM to PNG
- PPM to PDF
- PPM to WEBP
- PPM to GIF
- PPM to SVG
- PPM to AVIF
- PPM to ICO
- PPM to TIFF
- PPM to BMP
- PPM to JXL
- PPM to PSD
Convert other formats to HDR
- JPG to HDR
- PNG to HDR
- PDF to HDR
- WEBP to HDR
- HEIC to HDR
- GIF to HDR
- SVG to HDR
- AVIF to HDR
- ICO to HDR
- TIFF to HDR
- BMP to HDR
- JXL to HDR
See every PPM converter and HDR converter, or browse the full converter directory.