Bulk Rename Utility is a free, powerful batch file renaming tool for Windows. This independent guide explains how to install it, use its predefined rename rules and templates, apply regular expressions, and rename files safely.
Bulk Rename Utility is a long-standing, freeware Windows application built specifically for renaming large numbers of files and folders in a single operation. Instead of renaming files one at a time in File Explorer, you point it at a folder, choose from a set of predefined renaming rules — such as adding or removing text, changing case, inserting numbering sequences, or applying date stamps — and preview every resulting filename before committing to the change.
For more advanced needs, it also supports find-and-replace using regular expressions, giving power users precise, pattern-based control over how files get renamed.
Combine rules for removing text, inserting numbers, changing case, and adjusting dates — no scripting required.
See the exact new filenames before you apply anything, so mistakes are caught before they happen.
Use pattern matching and capture groups for renaming logic that simple find-and-replace can't handle.
Works across modern and older Windows desktop and server releases. See our compatibility notes for details.
Step-by-step setup, first-run configuration, and fixes for the most common installation errors.
Read the guide →Real before-and-after examples using predefined rules and templates for photos, music, and documents.
See examples →A practical introduction to the regex tab, with common patterns and worked examples.
Learn regex renaming →Avoid broken links and sync errors with Windows-safe naming conventions.
See the rules →Learn how to install it correctly the first time and avoid the most common setup mistakes.