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As of MacOS 11.0 Big Sur, QuickLook now removes the corners from your images before showing them to you.

This is a simple script to find all running QuickLook processes and patch them so they no longer do this.

Before & After

Requirements

  • You must be on an Apple Silicon mac.
  • SIP must be disabled.
  • LLDB must be installed (it's part of the Xcode command line tools).
  • Only tested on Ventura 13.5. Other OS versions may work.

Usage

./fix_quicklook.py

Room for improvement

This only patches QuickLook for images. Videos, text files etc. are still rounded off. Maybe patch those too.

Maybe add x86 support? I don't have an x86 Mac running an affected OS but would welcome a PR.

Sometimes MacOS spawns new QuickLook processes. Maybe add a daemon that watches for them and patches them as they spawn.

Maybe add a script that adds this as a login item?

It'd be neater to call the script 'fix-quicklook' rather than 'fix_quicklook.py', but it loads itself into LLDB and LLDB requires that the script follows Python module filename conventions. Maybe find a way to get around this.