An EXR straight out of a 3D renderer will not open in a normal photo viewer. Filemorph tone-maps it down to a viewable PNG on your iPhone.
OpenEXR (.exr) stores high dynamic range image data used by 3D renderers, VFX pipelines and compositing tools — far more brightness range than a normal screen or standard image format can show. That makes it excellent for rendering pipelines and useless for just looking at the result on your phone.
Filemorph tone-maps the EXR's HDR data down to standard dynamic range and exports it as a normal PNG, using ImageIO's HDR handling to compress the extended brightness range into something a normal display can show without losing the overall look of the render.
In the app: Convert → To PNG.
PNG opens in any image viewer, on any device, without special HDR handling — exactly what you need to quickly check a render or share a frame. Keep the EXR as your working file if the image is headed back into a compositing pipeline.
Yes. Unlike web converters that upload your files to a server, Filemorph converts every file locally using Apple's frameworks. Nothing leaves your device, and it works with no internet connection. This conversion is in the free tier.
It will look close, but not identical — EXR's dynamic range exceeds what a standard PNG or normal display can show, so Filemorph tone-maps the HDR data down to a viewable standard range.
Filemorph converts the EXR's main color output. Auxiliary render passes such as depth or normals stored in the same file are not included in the PNG.
Yes, it is part of Filemorph's free tier.
Free, on-device, no upload. Plus 300+ more file operations.
Download on theApp Store