About Make Names Web-Friendly
This Automator action converts the names of the selected files to all lowercase, removes accents, changes spaces to underscores or dashes, and converts other special characters to underscores or dashes. Works great as a Finder plugin, so you can access it with a single click!

What’s New in this Version
- If a file of the same name already exists, a number is added to the new file name, instead of displaying an error (thanks to Atreyu Svoren for the suggestion)
- Underscores, dashes, and spaces are now properly trimmed from the beginning and end of the file name
- File names with no web-friendly characters (or only dashes or underscores) are now renamed to “untitled”