How do I convert PGM to HDR?

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

Is it safe to convert PGM to HDR here?

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

Is the PGM to HDR 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 PGM to HDR reduce quality?

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

Can I convert multiple PGM 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 HDR back to PGM?

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

HDR→PGM PGM→PNG PNG→HDR PGM→JPG JPG→HDR PGM→WebP WebP→HDR PGM→JPEG HEIC→HDR PGM→PDF JPEG→HDR PGM→GIF PGM→AVIF PGM→SVG PGM→ICO PGM→TIFF PGM→BMP PGM→PSD PGM→EPS PGM→JXL PGM→TGA PGM→DDS PGM→EXR PGM→JP2 PGM→CUR PGM→PPM PGM→QOI PGM→PCX PGM→PBM PGM→PNM GIF→HDR AVIF→HDR SVG→HDR ICO→HDR TIFF→HDR BMP→HDR HEIF→HDR PSD→HDR EPS→HDR AI→HDR JXL→HDR CR2→HDR NEF→HDR DNG→HDR CR3→HDR ARW→HDR TGA→HDR DDS→HDR EXR→HDR 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

PGMHDR

Convert PGM to HDR

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

Runs in your browser
No watermark
Batch & ZIP download

How to convert PGM to HDR

1
Add your PGM files
Drag and drop PGM files onto the converter, paste them, or click to browse. You can add several at once.
2
Choose HDR
HDR 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 HDR
Download each HDR file, or everything at once as a ZIP.

PGM vs HDR

From

PGM · Portable Graymap

PGM is the grayscale member of the Netpbm family: uncompressed, simple and easy to parse.

Type: Image
Extension: .pgm
MIME: image/x-portable-graymap
Best for: grayscale image processing

Lossless

All PGM conversions →

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 →

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

PGM to HDR: frequently asked questions

Free, private and in your browser