How to remove all spaces from filenames on Mac

What this does

This is the more aggressive sibling of the trailing space rule above, for when you’d rather have no spaces anywhere in a filename at all. It strips every space out of the name, collapsing a run of several spaces down to nothing, so “Report Final Draft.pdf” becomes “ReportFinalDraft.pdf”.

What you’ll build

A rule that matches every real file, then removes every space from its name.

Open the rule editor

This walkthrough happens inside FilesAutomator itself, so install it from the Mac App Store first if you have not already, then open it. In its toolbar, choose Add, then New Automation Rule.

Name the rule and choose a folder

Name it something like “Remove spaces from my filenames” and use Add Folder to choose the folder you want this applied to.

Build the condition

Add a single condition: Size is greater than 0, matching any real file.

FilesAutomator

Add the action steps

Step 1: Rename

Choose Add Step, then Rename. In “New name, built from the parts below”, use Add Part, then Find and Replace in Name. Turn on “Find is a pattern” and enter this pattern to find:

\s+

Leave the replacement empty. Add Part again, choose Text, type a period, then Add Part once more and choose Extension.

FilesAutomator

Turn it on

Select Create Automation Rule, then switch the rule on. Every file that lands here now loses its spaces automatically.

A faster way

The template gallery inside FilesAutomator already has this rule ready to install, named Remove spaces from filenames.