Disable reformatting code when saving files

Question

I made a small change to an old java file in IntelliJ and when I save the file the IDE automatically reformats all the code. Normally this would be preferable, however it seems

Answer 1

Today in 2020 IDEA is silently formatting HTML before commit, which might break your web pages appearance. To disable that unselect this checkbox:

Answer 2

Settings | Editor | General > Other | Strip trailing spaces on Save -> None.

Answer 3

For newer versions (at least WebStorm 2018), Ctrl + S is bound to a save Macro that has a reformat code action followed by save.

You can remove this reformat with Ctrl + Shift + A search for Macro then modify the save one.

Edit | Macros | Edit Macros | save | - on the Action: Reformat...

Answer 4

You can add these comments to make it temporarily disable formatting on the file, or a specific function:

// @formatter:off

If you want one section to remain, you can also add this:

// @formatter:on 

IntelliJ Documentation Link

If @formatter:off is not working, you can enable it in preferences: