Archive for December 1, 2021

Wednesday, December 1, 2021

Firefox’s Optimized Zip Format

Taras Glek:

Unfortunately reading files started from ending precludes readahead. It is also suboptimal to read files from zip in random order.

The following creative interpretation of Zip spec results in optimized zip files[…]


Thus we have a sequentual-read-friendly zip file that can still be ready by zip tools that follow the spec.


At the time optimized jar change broke antivirus scanners, which further sped up Firefox startup :)

Update (2021-12-03): See also: Hacker News.

Thunderbolt 4 Docks

Rob Mayoff:

In case you’re looking for a Thunderbolt 4 dock for your new MacBook Pro, here’s the list I made when I was shopping for one. I bought with the Kensington. It’s fine but the OWC is what I’d buy now (it’s $50 less for the same ports but wasn’t out then).


Batch Converting Shortcuts to Scripts and Applets

John Voorhees:

To streamline the process, I turned, of course, to Shortcuts itself. In total, I’ve created four shortcuts to help me deploy my favorite shortcuts across macOS:

  • Script Builder: Generates .scpt files that can be incorporated in other apps from multiple shortcuts using AppleScript
  • Dock Applet Builder: Creates Dock applets from shortcuts that can be launched from the Finder, app launchers, and more
  • Script Applet Builder: Converts shortcuts into AppleScript applets with custom icons that behave like Dock applets but don’t get automatically deposited in your Dock
  • PopClip Builder: Produces and streamlines installation of multiple PopClip extensions with custom icons that run shortcuts

It’s probably better to use .applescript for the file extension, since .scpt is for compiled scripts.