EXR to PBM: conversion guide

Drop EXR files here

or choose files from your device

Converter not available yet

OpenEXR needs a dedicated floating-point pipeline that is not implemented yet.

In your browser
No upload
Private by design

What happens when you convert EXR to PBM?

EXR channels & deep data

An EXR may carry named auxiliary channels, multipart images or deep samples, beyond a flat RGB image. A rendered PBM copy is not an equivalent EXR working file. Channel selection, deep compositing and numeric mapping need explicit engine support; no export of every channel or depth sample is implemented.

Multiple source images

EXR can contain multiple image representations with different roles. These are not automatically a timed animation. Selecting an image, preserving a collection or creating several outputs needs explicit engine support; neither a first-image choice nor an all-images export is implemented.

Only black & white

PBM represents each pixel as black or white. Colour and intermediate gray levels cannot survive as sample values. Thresholding or dithering decides how tones become marks; the future engine has no such policy yet. PBM is not an ordinary grayscale photograph format.

Lossless sample storage

Netpbm stores these samples without compression. Reducing colour, thresholding or changing maxval can still lose information before storage; text and binary representations change the layout, not its image meaning. PBM can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.

EXR

Source

EXR

OpenEXR

Compression: Lossy & losslessTransparency: YesMetadata: Typed header attributes, Chromaticities

HDR raster data for rendering and compositing, with named channels and lossless or lossy codecs.

Explore EXR format →

PBM

Target

PBM

Portable Bitmap

Compression: UncompressedTransparency: NoMetadata: Header, Comments

Portable Bitmap: simple uncompressed raster samples for image-processing pipelines.

Explore PBM format →

Is EXR → PBM right for you?

Good choice when

PBM fits your delivery use: Bitonal line art & binary masks.
You need a rendered view of selected EXR image data.
You can choose the source image or part needed for delivery.
Your destination needs a bitonal mask or black-and-white bitmap.

Probably not when

You need every auxiliary channel or deep sample for compositing.
You require a complete collection, page set or multipart round trip.
You need continuous tones or colour.
You need the original HDR range for relighting or grading.

Conversion considerations

An EXR may carry named auxiliary channels, multipart images or deep samples, beyond a flat RGB image. A rendered PBM copy is not an equivalent EXR working file. Channel selection, deep compositing and numeric mapping need explicit engine support; no export of every channel or depth sample is implemented.
EXR can contain multiple image representations with different roles. These are not automatically a timed animation. Selecting an image, preserving a collection or creating several outputs needs explicit engine support; neither a first-image choice nor an all-images export is implemented.
PBM represents each pixel as black or white. Colour and intermediate gray levels cannot survive as sample values. Thresholding or dithering decides how tones become marks; the future engine has no such policy yet. PBM is not an ordinary grayscale photograph format.
If HDR source content is exported through an SDR representation, it needs a display rendering. Values outside the output range require tone mapping, scaling or clipping; brightness relationships can change. Tone mapping, exposure and colour handling depend on the future engine. Renaming or lossless compression cannot preserve out-of-range values.
If EXR contains transparency, PBM cannot retain it as transparent output areas. Those pixels need compositing against an opaque background. Matte colour, alpha interpretation and edge treatment are future engine decisions; no background colour is selected yet.

EXR to PBM conversion details

EXR channels & deep data: An EXR may carry named auxiliary channels, multipart images or deep samples, beyond a flat RGB image. A rendered PBM copy is not an equivalent EXR working file. Channel selection, deep compositing and numeric mapping need explicit engine support; no export of every channel or depth sample is implemented.
Multiple source images: EXR can contain multiple image representations with different roles. These are not automatically a timed animation. Selecting an image, preserving a collection or creating several outputs needs explicit engine support; neither a first-image choice nor an all-images export is implemented.
Only black & white: PBM represents each pixel as black or white. Colour and intermediate gray levels cannot survive as sample values. Thresholding or dithering decides how tones become marks; the future engine has no such policy yet. PBM is not an ordinary grayscale photograph format.
HDR to SDR: If HDR source content is exported through an SDR representation, it needs a display rendering. Values outside the output range require tone mapping, scaling or clipping; brightness relationships can change. Tone mapping, exposure and colour handling depend on the future engine. Renaming or lossless compression cannot preserve out-of-range values.
Opaque output: If EXR contains transparency, PBM cannot retain it as transparent output areas. Those pixels need compositing against an opaque background. Matte colour, alpha interpretation and edge treatment are future engine decisions; no background colour is selected yet.
Lossless sample storage: Netpbm stores these samples without compression. Reducing colour, thresholding or changing maxval can still lose information before storage; text and binary representations change the layout, not its image meaning. PBM can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
Sample precision & colour: Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.
Metadata & colour: Format support does not guarantee that an export preserves metadata or colour profiles. Retention and colour handling depend on the future converter; its engine is not implemented yet.
Compression: EXR: Lossy & lossless → PBM: Uncompressed EXR: EXR supports lossy and lossless codecs. Choose one for the sample types and required precision; .exr alone does not guarantee exact channel preservation. PBM: Netpbm stores these samples without compression. Reducing colour, thresholding or changing maxval can still lose information before storage; text and binary representations change the layout, not its image meaning.
Transparency: EXR: Yes → PBM: No
Colour depth: EXR: HALF 16 / FLOAT 32 / UINT 32 → PBM: 1 bit/pixel
HDR: EXR: Floating-point working values
Multiple images: EXR: Multipart
Dimensions: Pixel dimensions, page geometry, rendering resolution, resizing and orientation need explicit converter policies. The future engine has not defined them yet.
Metadata: EXR: Typed header attributes, Chromaticities → PBM: Header, Comments. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.

Common questions

Will all EXR channels and deep samples survive?

Will every source image be exported?

Can PBM retain gray shading?

Are bit depth and colour values guaranteed to match?

Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.

Will metadata and colour profiles be retained?

EXR: Typed header attributes, Chromaticities → PBM: Header, Comments. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.