A first look at my new file extension and what to except

 I have since decided to contribute positively to the file extension world, with my new file extension .$GEMS.

Today, which is January 17th, 2026, I have released it to the public. As an alternative to boring plain text, $GEMS files really hit the spot, with special text editing software to up your game! And best part? Text editors can open it too!

To make an .$GEMS file, you will need to do the following:

  1. Open your text editor on desktop. Alternatively, on mobile, use a mobile-friendly text file maker.
  2. Type anything you want - be it a diary entry, movie transcript, or a note to the future.
  3. There should be a "Save as" feature on your text editor. On Windows, click on one of the dropdown menus and set it to the All files (*.*) option. Now replace ".txt" with ".$GEMS".
  4. Alternatively, click "Save" to save it as plain text, then change the extension from txt to $GEMS in your file manager for the fun!
  5. You are now ready to enjoy your file.
$GEMS files are a homage to an app called Castle - Make & Play, where one of the default variables for a deck in the app is "$GEMS". The file extension is officially called a Gems Text File, and is pronounced "dollar gems" or "ess-gems". The MIME type is text/plain, but I soon want to truly separate the file from ordinary .txt files, with my proposal for a MIME type being text/gems.

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