POTM to EXR Converter

Convert POTM slides to HDR EXR images online

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HDR Precision

EXR captures an extended range of brightness and color from your POTM slides — far beyond what standard 8-bit formats can represent.

Industry Standard

OpenEXR is the default interchange format in film and VFX. Converting slides to EXR integrates them directly into professional pipelines.

Cloud Rendering

Processing happens entirely on Convertio servers. No specialized HDR software is required on your local machine.

How to convert POTM to EXR

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose exr or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your exr file right afterwards

About formats

POTM (PowerPoint Template with Macros) is a macro-enabled template format for Microsoft PowerPoint, introduced with Office 2007 as part of the Office Open XML family. POTM combines the template functionality of POTX — providing reusable slide masters, layouts, themes, and design foundations — with the ability to embed VBA (Visual Basic for Applications) macro code that executes in presentations created from the template. The format is a ZIP archive containing the standard XML parts for slide masters, layouts, and themes, plus a vbaProject.bin stream housing the VBA project. This combination enables organizations to distribute not just visual consistency but also functional automation: every presentation created from a POTM template inherits both the design system and the programmatic capabilities built into it. Common use cases include templates that automatically populate slides with data from corporate systems, enforce content approval workflows, insert standardized disclaimer slides, or provide custom ribbon tabs with organization-specific tools. One advantage is embedded workflow automation — a POTM template can include initialization macros that configure the presentation environment, add custom menu options, and connect to external data sources the moment a new presentation is created from it. The distinct .potm extension serves a security purpose as well, enabling administrators to apply differentiated trust policies for macro-containing templates versus standard POTX files. POTM is supported exclusively in Microsoft PowerPoint desktop editions where VBA execution is available.
Developer: Microsoft
Initial release: January 30, 2007
EXR is a high-dynamic-range raster image format developed by Industrial Light & Magic (ILM) internally since 1999 and publicly released as open-source software in January 2003. OpenEXR was created to meet the demanding requirements of feature film visual effects compositing, where scenes routinely contain extreme brightness ranges — from deep shadows to specular highlights on water, metal, or light sources — that exceed the precision of 8-bit or 16-bit integer formats. EXR stores pixel data in 16-bit floating-point (half) or 32-bit floating-point per channel, providing over 30 stops of dynamic range with smooth precision across the entire luminance spectrum. The format supports an arbitrary number of channels (not just RGBA), tiled and scanline storage, multiple compression methods (lossless ZIP, lossy B44 and DWAA/DWAB for preview quality), multi-part files containing multiple views or layers, and deep pixel data where each pixel stores multiple depth-sorted samples for volumetric effects. One advantage is compositing fidelity: the floating-point precision means that color grading, exposure adjustments, lighting changes, and multi-layer compositing operations produce mathematically correct results without the banding, clipping, or quantization artifacts inherent in integer formats. EXR's adoption as the VFX industry standard is another core strength — it is the default interchange format for Foundry Nuke, Autodesk Flame, Blackmagic Fusion, Adobe After Effects, and every major 3D renderer, and its open-source C++ library is embedded in hundreds of production tools.
Initial release: January 2003

Frequently Asked Questions

Why convert POTM to EXR?

EXR stores high dynamic range data with 16- or 32-bit precision — valuable when slide visuals need to feed into VFX or compositing pipelines.

What programs open EXR files?

Adobe Photoshop, After Effects, Nuke, Blender, DaVinci Resolve, and the free djv viewer all support the OpenEXR format natively.

Is EXR only for HDR photography?

No — EXR is widely used in film, VFX, and 3D rendering wherever wide color gamut and floating-point precision matter.

Does the conversion strip POTM macros?

Yes. EXR holds image pixel data only — no macros, scripts, or template metadata from the POTM file are included.

How large are EXR files?

EXR supports built-in lossless compression, so file sizes are reasonable despite the high bit depth. Expect larger files than JPG, smaller than raw BMP.

Is this tool free?

Convertio offers free POTM to EXR conversions. Premium subscriptions provide expanded limits for professional-volume work.