Export Master adds nine export-time filters to Lightroom. Each one is a normal Post-Process Action, added and reordered in the Export dialog exactly the way Lightroom's own built-in ones work, so there's nothing new to learn. What you get: Outer Border, Inner Border, Watermark, Text Annotation, Resize, Background Canvas, Compress to File Size, Sharpening, Colour Space and Colour Processing. No separate install: Export Master ships with its own copy of ImageMagick bundled straight into the plugin. No Homebrew, no PATH to set up, nothing to install alongside it. Requirements: Lightroom Classic. An Apple Silicon Mac. What this isn't: a full photo editor. This is export-time finishing.