Preview is great for one image, but weak at moving through a folder. MacViewPro brings IrfanView’s workflow to a native Swift/Metal Mac app: open one image, then flip through the whole folder with Space/Backspace. No import, no library. Single-key shortcuts (rebindable), 12 window fit modes, pixel grid past 800%, undoable edits, batch convert/resize/rename, support of RAW,JPEG, PNG, TIFF, GIF, HEIC, WebP, AVIF, PDF, BMP and ICO. Free, no account, no telemetry, images stay local.