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Use wildcards to target filenames

A wildcard filter limits which filenames are eligible for renaming, even in a mixed folder.

Windows 11 & Windows 10 · Folders · Updated November 2, 2026

Quick answer: A wildcard filter limits which filenames are eligible for renaming, even in a mixed folder.

Bulk Rename Utility lets you set rules separately, select the exact items to be affected, and preview the results in a New Name column. The workflow below focuses on bulk rename wildcard filter without changing unrelated files.

Example: before and after

These filenames are examples to explain the transformation; they are not test results from your files.

BeforeAfter (illustrative)
IMG010.jpg and notes.txtTrip010.jpg and notes.txt

How to do it step by step

  1. Step 1. Define a pattern such as IMG*.jpg.
  2. Step 2. Apply the matching filter.
  3. Step 3. Inspect the eligible list.
  4. Step 4. Run a rename rule on matching names.

Why this workflow works

The rule and selection work together: the rule changes eligible filenames, while the selection limits which files receive the change. Always inspect the New Name column and confirm the directory before choosing Rename. For repetitive work, save verified settings as a favourite, but review them again on each new batch.

Important limitation: Wildcards select candidates; they do not themselves define new names. A filename preview does not guarantee the underlying file is backed up; keep a separate copy before bulk changes.

How to verify the results

Compare the original and proposed filenames side by side, check that each target name is unique in its directory, and confirm file extensions match the actual file types. After applying the rule, open a sample file in its usual Windows application and check any shortcuts or scripts that use the old path.

Frequently asked questions

How do I wildcard filter in Bulk Rename Utility?

A wildcard filter limits which filenames are eligible for renaming, even in a mixed folder.

What should I check before applying this batch?

Compare the New Name preview for every selected file, check for duplicates and verify extensions. Wildcards select candidates; they do not themselves define new names.

Does changing a filename also change its contents?

No. A standard filename rename changes the name or path, not the document, photo, audio, or video data. Changing an extension also does not convert a file format.

Related Windows renaming guides


For release details, licensing and implementation-specific controls, consult the documentation and source list. Always use a small test directory before a large batch.