Menu
Tools / PGM to HDR ConverterOffice to PNG ↗ Free. No sign-up. Just create.
LESS FRICTION. MORE CREATION.

PGM to HDR.
Radiance HDR Output.

Convert your PGM image to HDR on your device. Create a Radiance HDR file for an application that expects that image container.

Local conversionsOn-device privacyBatch friendly
01

Add your images

BIG IDEAS START WITH A DROP

Choose your PGM images

Drag & drop your images here, or

PGM files (.pgm)
Up to 20 MB each · 30 images per batch

No uploads. No waiting rooms. Just your browser.

02

Make it yours

A Radiance image for lighting workflows.

Fixed
Smaller fileHigher quality
Converting an SDR source does not create extra HDR detail.
Add your images to get started

Animated and multi-page inputs use the first frame or page. Metadata and layers are not preserved.

Is PGM to HDR Converter right for your task?

Convert your PGM image to HDR on your device. Create a Radiance HDR file for an application that expects that image container.

What to provide
PGM files (.pgm). Keep the source if you will need to edit it again.
What you get
HDR still images (.hdr), individually or in a ZIP. Converting an SDR source does not create extra HDR detail.
Example input for PGM to HDR Converter

Illustrative input, not a record of a completed test. Check the selected mode before running it.

Input: photo.pgm → output: photo.hdr (illustrative filename).

How to convert PGM to HDR

HDR is selected on this page. Files are processed locally; the page downloads its conversion engine on first use.

  1. Choose a PGM file (.pgm) or drag it into the workspace. Add up to 30 images, no larger than 20 MB each.
  2. Leave Convert to set to HDR. The quality slider is disabled for this output. Set Transparency background for any transparent pixels.
  3. Select Convert images. Open a preview and check the output dimensions.
  4. Download the .hdr file or use Download all (.zip) for a batch. Open the result in the application you intend to use.

Why won't my PGM file convert?

Check that the file is an actual PGM image rather than a renamed file. Try one smaller image first; the input limit is 40 million pixels and 16,384 pixels per side. Allow the processing engine to load before retrying.

Before converting your PGM file

The PGM source is grayscale. Converting it to a color-capable container will not restore colors absent from the source.

What changes in the HDR output?

An SDR image remains limited by its source data. Conversion does not create new highlight detail, an exposure bracket or a calibrated lighting map; output is opaque.

Supported features and limits

Converting an SDR source does not create extra HDR detail.

Before you use the result

  • Inspect transparent areas: this output is opaque, so choose a suitable background before converting.
  • Compare output dimensions and file size. Changing format does not guarantee a smaller file.
  • Animated or multi-page sources produce one still image here. Renaming the extension does not perform a conversion.

If PGM to HDR Converter does not work as expected

If your PGM file fails, confirm it opens in its original application and is not just a renamed file. Try one smaller image to distinguish a format problem from browser memory limits.

Where your input is processed

The tool processes input in your browser. Loading the page and its processing libraries still needs network access. Site analytics and sharing services are separate from file processing; see the privacy explanation below. Privacy details.

Published by QoTool. About this site and its tool guides. Found an incorrect result? Report a problem with this tool with its settings and a non-sensitive example.

EVERY FORMAT. ITS OWN SPACE.

Find your conversion.

462 CONVERSION TOOLS

HEIC and HEIF are input-only. SVG output contains an embedded bitmap.

PNG conversions Lossless detail, with transparency preserved.
PNG → JPEGPNG → WebPPNG → AVIFPNG → GIFPNG → BMPPNG → TIFFPNG → ICOPNG → SVGPNG → JPEG XLPNG → JPEG 2000PNG → PSDPNG → TGAPNG → QOIPNG → DDSPNG → OpenEXRPNG → HDRPNG → PPMPNG → PGMPNG → PBMPNG → PNM
JPEG conversions The go-to for photos and smaller file sizes.
JPEG → PNGJPEG → WebPJPEG → AVIFJPEG → GIFJPEG → BMPJPEG → TIFFJPEG → ICOJPEG → SVGJPEG → JPEG XLJPEG → JPEG 2000JPEG → PSDJPEG → TGAJPEG → QOIJPEG → DDSJPEG → OpenEXRJPEG → HDRJPEG → PPMJPEG → PGMJPEG → PBMJPEG → PNM
WebP conversions Modern compression, with transparency preserved.
WebP → PNGWebP → JPEGWebP → AVIFWebP → GIFWebP → BMPWebP → TIFFWebP → ICOWebP → SVGWebP → JPEG XLWebP → JPEG 2000WebP → PSDWebP → TGAWebP → QOIWebP → DDSWebP → OpenEXRWebP → HDRWebP → PPMWebP → PGMWebP → PBMWebP → PNM
AVIF conversions Efficient next-generation image compression.
AVIF → PNGAVIF → JPEGAVIF → WebPAVIF → GIFAVIF → BMPAVIF → TIFFAVIF → ICOAVIF → SVGAVIF → JPEG XLAVIF → JPEG 2000AVIF → PSDAVIF → TGAAVIF → QOIAVIF → DDSAVIF → OpenEXRAVIF → HDRAVIF → PPMAVIF → PGMAVIF → PBMAVIF → PNM
GIF conversions A compact, 256-color image for broad compatibility.
GIF → PNGGIF → JPEGGIF → WebPGIF → AVIFGIF → BMPGIF → TIFFGIF → ICOGIF → SVGGIF → JPEG XLGIF → JPEG 2000GIF → PSDGIF → TGAGIF → QOIGIF → DDSGIF → OpenEXRGIF → HDRGIF → PPMGIF → PGMGIF → PBMGIF → PNM
BMP conversions An uncompressed bitmap for desktop applications.
BMP → PNGBMP → JPEGBMP → WebPBMP → AVIFBMP → GIFBMP → TIFFBMP → ICOBMP → SVGBMP → JPEG XLBMP → JPEG 2000BMP → PSDBMP → TGABMP → QOIBMP → DDSBMP → OpenEXRBMP → HDRBMP → PPMBMP → PGMBMP → PBMBMP → PNM
TIFF conversions A versatile lossless format for imaging workflows.
TIFF → PNGTIFF → JPEGTIFF → WebPTIFF → AVIFTIFF → GIFTIFF → BMPTIFF → ICOTIFF → SVGTIFF → JPEG XLTIFF → JPEG 2000TIFF → PSDTIFF → TGATIFF → QOITIFF → DDSTIFF → OpenEXRTIFF → HDRTIFF → PPMTIFF → PGMTIFF → PBMTIFF → PNM
ICO conversions An icon file for websites and desktop apps.
ICO → PNGICO → JPEGICO → WebPICO → AVIFICO → GIFICO → BMPICO → TIFFICO → SVGICO → JPEG XLICO → JPEG 2000ICO → PSDICO → TGAICO → QOIICO → DDSICO → OpenEXRICO → HDRICO → PPMICO → PGMICO → PBMICO → PNM
SVG conversions An SVG container with an embedded PNG image.
SVG → PNGSVG → JPEGSVG → WebPSVG → AVIFSVG → GIFSVG → BMPSVG → TIFFSVG → ICOSVG → JPEG XLSVG → JPEG 2000SVG → PSDSVG → TGASVG → QOISVG → DDSSVG → OpenEXRSVG → HDRSVG → PPMSVG → PGMSVG → PBMSVG → PNM
HEIC conversions Convert photos from Apple devices.
HEIC → PNGHEIC → JPEGHEIC → WebPHEIC → AVIFHEIC → GIFHEIC → BMPHEIC → TIFFHEIC → ICOHEIC → SVGHEIC → JPEG XLHEIC → JPEG 2000HEIC → PSDHEIC → TGAHEIC → QOIHEIC → DDSHEIC → OpenEXRHEIC → HDRHEIC → PPMHEIC → PGMHEIC → PBMHEIC → PNM
HEIF conversions Decode High Efficiency Image Format photos.
HEIF → PNGHEIF → JPEGHEIF → WebPHEIF → AVIFHEIF → GIFHEIF → BMPHEIF → TIFFHEIF → ICOHEIF → SVGHEIF → JPEG XLHEIF → JPEG 2000HEIF → PSDHEIF → TGAHEIF → QOIHEIF → DDSHEIF → OpenEXRHEIF → HDRHEIF → PPMHEIF → PGMHEIF → PBMHEIF → PNM
JPEG XL conversions Modern photography with efficient compression.
JPEG XL → PNGJPEG XL → JPEGJPEG XL → WebPJPEG XL → AVIFJPEG XL → GIFJPEG XL → BMPJPEG XL → TIFFJPEG XL → ICOJPEG XL → SVGJPEG XL → JPEG 2000JPEG XL → PSDJPEG XL → TGAJPEG XL → QOIJPEG XL → DDSJPEG XL → OpenEXRJPEG XL → HDRJPEG XL → PPMJPEG XL → PGMJPEG XL → PBMJPEG XL → PNM
JPEG 2000 conversions Wavelet-based compression for imaging workflows.
JPEG 2000 → PNGJPEG 2000 → JPEGJPEG 2000 → WebPJPEG 2000 → AVIFJPEG 2000 → GIFJPEG 2000 → BMPJPEG 2000 → TIFFJPEG 2000 → ICOJPEG 2000 → SVGJPEG 2000 → JPEG XLJPEG 2000 → PSDJPEG 2000 → TGAJPEG 2000 → QOIJPEG 2000 → DDSJPEG 2000 → OpenEXRJPEG 2000 → HDRJPEG 2000 → PPMJPEG 2000 → PGMJPEG 2000 → PBMJPEG 2000 → PNM
PSD conversions A flattened image for Photoshop workflows.
PSD → PNGPSD → JPEGPSD → WebPPSD → AVIFPSD → GIFPSD → BMPPSD → TIFFPSD → ICOPSD → SVGPSD → JPEG XLPSD → JPEG 2000PSD → TGAPSD → QOIPSD → DDSPSD → OpenEXRPSD → HDRPSD → PPMPSD → PGMPSD → PBMPSD → PNM
TGA conversions A raster format for graphics and game assets.
TGA → PNGTGA → JPEGTGA → WebPTGA → AVIFTGA → GIFTGA → BMPTGA → TIFFTGA → ICOTGA → SVGTGA → JPEG XLTGA → JPEG 2000TGA → PSDTGA → QOITGA → DDSTGA → OpenEXRTGA → HDRTGA → PPMTGA → PGMTGA → PBMTGA → PNM
QOI conversions Fast, lossless Quite OK Image encoding.
QOI → PNGQOI → JPEGQOI → WebPQOI → AVIFQOI → GIFQOI → BMPQOI → TIFFQOI → ICOQOI → SVGQOI → JPEG XLQOI → JPEG 2000QOI → PSDQOI → TGAQOI → DDSQOI → OpenEXRQOI → HDRQOI → PPMQOI → PGMQOI → PBMQOI → PNM
DDS conversions A texture format for graphics applications.
DDS → PNGDDS → JPEGDDS → WebPDDS → AVIFDDS → GIFDDS → BMPDDS → TIFFDDS → ICODDS → SVGDDS → JPEG XLDDS → JPEG 2000DDS → PSDDDS → TGADDS → QOIDDS → OpenEXRDDS → HDRDDS → PPMDDS → PGMDDS → PBMDDS → PNM
OpenEXR conversions An image container for visual effects workflows.
OpenEXR → PNGOpenEXR → JPEGOpenEXR → WebPOpenEXR → AVIFOpenEXR → GIFOpenEXR → BMPOpenEXR → TIFFOpenEXR → ICOOpenEXR → SVGOpenEXR → JPEG XLOpenEXR → JPEG 2000OpenEXR → PSDOpenEXR → TGAOpenEXR → QOIOpenEXR → DDSOpenEXR → HDROpenEXR → PPMOpenEXR → PGMOpenEXR → PBMOpenEXR → PNM
HDR conversions A Radiance image for lighting workflows.
HDR → PNGHDR → JPEGHDR → WebPHDR → AVIFHDR → GIFHDR → BMPHDR → TIFFHDR → ICOHDR → SVGHDR → JPEG XLHDR → JPEG 2000HDR → PSDHDR → TGAHDR → QOIHDR → DDSHDR → OpenEXRHDR → PPMHDR → PGMHDR → PBMHDR → PNM
PPM conversions A simple, full-color portable pixmap.
PPM → PNGPPM → JPEGPPM → WebPPPM → AVIFPPM → GIFPPM → BMPPPM → TIFFPPM → ICOPPM → SVGPPM → JPEG XLPPM → JPEG 2000PPM → PSDPPM → TGAPPM → QOIPPM → DDSPPM → OpenEXRPPM → HDRPPM → PGMPPM → PBMPPM → PNM
PGM conversions A portable grayscale image.
PGM → PNGPGM → JPEGPGM → WebPPGM → AVIFPGM → GIFPGM → BMPPGM → TIFFPGM → ICOPGM → SVGPGM → JPEG XLPGM → JPEG 2000PGM → PSDPGM → TGAPGM → QOIPGM → DDSPGM → OpenEXRPGM → HDRPGM → PPMPGM → PBMPGM → PNM
PBM conversions A monochrome portable bitmap.
PBM → PNGPBM → JPEGPBM → WebPPBM → AVIFPBM → GIFPBM → BMPPBM → TIFFPBM → ICOPBM → SVGPBM → JPEG XLPBM → JPEG 2000PBM → PSDPBM → TGAPBM → QOIPBM → DDSPBM → OpenEXRPBM → HDRPBM → PPMPBM → PGMPBM → PNM
PNM conversions A portable image for technical workflows.
PNM → PNGPNM → JPEGPNM → WebPPNM → AVIFPNM → GIFPNM → BMPPNM → TIFFPNM → ICOPNM → SVGPNM → JPEG XLPNM → JPEG 2000PNM → PSDPNM → TGAPNM → QOIPNM → DDSPNM → OpenEXRPNM → HDRPNM → PPMPNM → PGMPNM → PBM
THREE STEPS. ZERO FUSS.

From this to that.
Just like that.

01

Pick your pictures

Drop one image or a whole batch. We’re ready when you are.

02

Find your format

Choose from 21 output formats and adjust the available settings.

03

Take them with you

Download your new images individually or together in one ZIP.

A few things to know.

Which image formats can I convert?

Choose from 23 input formats and 21 output formats. HEIC and HEIF are input-only. Animated and multi-page files become a single still image. SVG input must be self-contained; convert text to paths to preserve lettering. SVG output embeds a PNG bitmap; it does not create editable vector paths. PSD output is flattened.

Will my images lose quality?

PNG uses lossless encoding. JPEG, WebP, AVIF, JPEG XL and JPEG 2000 offer quality controls. GIF reduces colors, PGM is grayscale and PBM is black and white. ICO images are scaled to fit 256 × 256. File sizes may grow or shrink. Metadata, including camera and location information, is not copied.

Are my images uploaded anywhere?

No. Your browser handles every conversion locally. Files are not sent to a server or saved after you leave this page. For browser stability, each image is limited to 20 MB and 40 million pixels.