List of useful Quick Look plugins for developers

• Run brew cask install <package>

brew cask install qlcolorcode qlstephen qlmarkdown quicklook-json qlimagesize suspicious-package quicklookase qlvideo

To get plugins working in Catalina, you will need to remove the quarantine attribute.

Run this to see the attributes:

xattr -r ~/Library/QuickLook

And run this to remove the attributes:

xattr -d -r com.apple.quarantine ~/Library/QuickLook

• Click "download manually"
• Move the downloaded .qlgenerator file to ~/Library/QuickLook
• Run qlmanage -r

Preview source code files with syntax highlighting

Run brew cask install qlcolorcode or download manually

Preview plain text files without or with unknown file extension. Example: README, CHANGELOG, index.styl, etc.

Run brew cask install qlstephen or download manually

Preview Markdown files

Run brew cask install qlmarkdown or download manually

Preview JSON files

Run brew cask install quicklook-json or download manually

Preview archives

Note: The BetterZipQL plugin was integrated with the BetterZip app.

Run brew cask install betterzip to install the BetterZip app and its Quick Look plugin or download manually

The legacy BetterZipQL plugin can be downloaded here.

Display image size and resolution

Run brew cask install qlimagesize or download manually

Preview the contents of a standard Apple installer package

Run brew cask install suspicious-package or download manually

Preview Adobe ASE Color Swatches generated with Adobe Photoshop, Adobe Illustrator, Adobe Color CC, Spectrum, COLOURlovers, Prisma, among many others.

Run brew cask install quicklookase or download manually

Preview most types of video files, as well as their thumbnails, cover art and metadata

Run brew cask install qlvideo or download manually

These are not included in Install all.

Preview iOS / macOS app and provision information

Run brew cask install provisionql or download manually

Preview Android APK files

Run brew cask install quicklookapk or download manually

Preview Adobe Photoshop pattern files

Run brew cask install quicklook-pat or download manually

Preview WebP images

NOTE: this is already covered by qlImageSize, so this plugin is listed here only in case you do not like qlImageSize

Run brew cask install webpquicklook or download manually

To the extent possible under law, Sindre Sorhus has waived all copyright and related or neighboring rights to this work.