How do I rename multiple campaigns or ads at once? Can I find and replace text in their names?

Select the items, open Bulk edits, and click Edit Name. In the window, you can edit each name individually, use the Apply to all field to set the same value for all of them, or use the Find and replace section: enter the text to find and the replacement text, then click Replace in names to change all the names at once. When you're done, click Save changes and follow the progress in the same window. To quickly rename a single item, hover over its name in the table and click the pencil icon that appears. Renaming doesn't affect delivery or reset metrics, so it's a safe change.