How do I convert HDR to PNM?

Drop your HDR file onto the converter above, make sure PNM is selected, and click Convert. When it's done, download the PNM file — it usually takes a few seconds.

Is it safe to convert HDR to PNM here?

Yes. HDR to PNM conversion happens entirely inside your browser using WebAssembly, so your file is never uploaded to any server.

Is the HDR to PNM converter free?

Yes — free with no watermark. Signed-out visitors can convert 25 files a day, and a free account raises that to 250.

Will converting HDR to PNM reduce quality?

No — PNM preserves the content of your HDR file as faithfully as the format allows.

Can I convert multiple HDR files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.

Can I convert PNM back to HDR?

Yes — use our PNM to HDR converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.

PNM→HDR HDR→PNG PNG→PNM HDR→JPG JPG→PNM HDR→WebP WebP→PNM HDR→JPEG HEIC→PNM HDR→PDF JPEG→PNM HDR→GIF HDR→AVIF HDR→ICO HDR→TIFF HDR→BMP HDR→PSD HDR→EPS HDR→JXL HDR→TGA HDR→DDS HDR→EXR HDR→JP2 HDR→CUR HDR→PPM HDR→QOI HDR→PCX HDR→PGM HDR→PBM HDR→XPM GIF→PNM AVIF→PNM SVG→PNM ICO→PNM TIFF→PNM BMP→PNM HEIF→PNM PSD→PNM EPS→PNM AI→PNM JXL→PNM CR2→PNM NEF→PNM DNG→PNM CR3→PNM ARW→PNM TGA→PNM DDS→PNM EXR→PNM PNG→JPG JPG→PNG PNG→WebP JPG→WebP WebP→PNG WebP→JPG HEIC→PNG HEIC→JPG MP4→MP3 PNG→JPEG JPG→JPEG JPEG→PNG JPEG→JPG PNG→PDF JPG→PDF PDF→PNG PDF→JPG HEIC→WebP MP4→WebP PDF→DOCX DOCX→PDF JPEG→WebP WebP→JPEG PNG→GIF JPG→GIF GIF→PNG GIF→JPG MP4→MOV MOV→MP4 WebP→PDF HEIC→JPEG WebP→GIF GIF→WebP HEIC→PDF MP3→WAV WAV→MP3 JPEG→PDF PDF→JPEG SVG→PNG SVG→JPG HEIC→GIF MOV→MP3 MP4→GIF GIF→MP4 JPEG→GIF GIF→JPEG PNG→AVIF JPG→AVIF AVIF→PNG AVIF→JPG MP3→M4A M4A→MP3 GIF→PDF SVG→PDF PNG→SVG JPG→SVG PDF→SVG SVG→WebP MOV→WebP MP4→WAV MP4→WebM WebM→MP4 WebP→AVIF AVIF→WebP WebP→SVG SVG→JPEG MP4→MKV MKV→MP4 HEIC→AVIF MP4→M4A JPEG→AVIF AVIF→JPEG JPEG→SVG MOV→GIF GIF→MOV WebM→MP3 AVIF→PDF MP3→FLAC FLAC→MP3 MP4→AVI AVI→MP4 MKV→MP3 GIF→AVIF AVIF→GIF SVG→GIF GIF→SVG WebM→WebP MOV→WAV XLSX→PDF CSV→PDF EPUB→PDF PDF→EPUB MOV→WebM WebM→MOV MKV→WebP PNG→ICO JPG→ICO ICO→PNG ICO→JPG MP3→AAC WAV→M4A AAC→MP3 M4A→WAV MP4→FLAC AVI→MP3 MOV→MKV MKV→MOV MOV→M4A DOCX→EPUB EPUB→DOCX CSV→DOCX

HDRPNM

Convert HDR to PNM

Free, fast and private. Your HDR files are converted right in your browser — nothing is uploaded.

Runs in your browser
No watermark
Batch & ZIP download

How to convert HDR to PNM

1
Add your HDR files
Drag and drop HDR files onto the converter, paste them, or click to browse. You can add several at once.
2
Choose PNM
PNM is already selected. Open Options if you want to change quality, size or metadata.
3
Convert
Click Convert. Your files are converted right in your browser in seconds.
4
Download your PNM
Download each PNM file, or everything at once as a ZIP.

HDR vs PNM

From

HDR · Radiance HDR

Radiance HDR (RGBE) stores high-dynamic-range images and is widely used for environment maps and image-based lighting.

Type: Image
Extension: .hdr
MIME: image/vnd.radiance
Best for: HDRI environment maps in 3D software

HDR

All HDR conversions →

PNM · Portable Anymap

PNM is the umbrella name for the Netpbm PBM, PGM and PPM formats.

Type: Image
Extension: .pnm
MIME: image/x-portable-anymap
Best for: image processing pipelines

Lossless

All PNM conversions →

Need it the other way around? Convert PNM to HDR.

HDR to PNM: frequently asked questions

Free, private and in your browser