A redesigned text editor with Markdown preview

Version 3.9 redesigned the built-in text editor with resizable file list, editor and Markdown preview columns, and the app began remembering its window size.

S Files Pro X has its own text editor, so you can read or tweak a text file without waiting for another app to open. Version 3.9 gave it a redesign.

Three resizable columns

After the redesign, the editor shows three columns side by side:

  1. the list of files in the folder (added in version 2.17),
  2. the text you are editing, and
  3. a live Markdown preview, handy for README files and notes.

Drag the dividers between them to make any column wider or narrower. Open a text file with Space or F6 to use it.

The earlier text editor, with Markdown text on the left and its formatted preview on the right
May 2022, before the redesign
The text editor with a list of files on the left, Markdown text in the middle and its formatted preview on the right, with a toolbar for editing, saving, word wrap, preview, zoom and find
Today

The text editor before the redesign, and today with the file list, text and Markdown preview in resizable columns.

The update also fixed the “save changes?” prompt appearing after switching to a file that had no unsaved changes. The prompt still appears when you switch away from a file that does have them.

The window remembers where it was

S Files Pro X now opens with the same window size and position as last time. If you prefer, a new setting starts the app maximized.

Other changes in 3.9

  • Tab settings to hide the file operation toolbar or the view options toolbar, for a cleaner look.
  • A separate close button for the Settings window, so it is not confused with closing the app.
  • An experimental setting to show the folders pinned in File Explorer among your bookmarks.

See the changelog for version 3.9, and everything the built-in viewers can do.

From a blue folder to a ribbon S: the S Files logo through the years

How the S Files Pro X logo changed from 2020 to today: from a plain blue folder, to an S on a folder, to the ribbon S in three colors, and back onto a folder.

September 2026: sharper icons, fewer crashes and an updated foundation

Versions 3.25 to 3.27 move S Files Pro X to the latest Windows App SDK and fix crashes, locked files and blurry icons. S Renamer 1.2 gets a new rename engine.

Column view and the command palette are now standard

After months as experiments, Miller column view and the command palette became regular settings in version 3.21, along with phones and cameras on the Home page.