How to batch rename files
Batch renaming works best when you turn a messy folder into a small sequence of visible steps. Renamio keeps that workflow preview-first so you can see every old name and new name before anything changes.
What usually goes wrong
- Manual rename work becomes slow as soon as a folder has more than a few files.
- One large regex or shell command is hard to audit before it changes real files.
- Duplicate output names are easy to miss without a preview table.
Renamio workflow
- 1Add the files or folders you want to clean up.
- 2Start with one simple rule such as replace, insert, remove, date, or sequence.
- 3Review the preview, add another rule only if the target names still need cleanup.
- 4Check conflicts, then apply the batch locally and keep the operation in history.
Why this workflow helps
- Works for both quick cleanup and larger folders
- Keeps each rule understandable
- Reduces the risk of irreversible-looking batch mistakes
Good fit
- Mixed download folders
- Photo exports
- Office documents and project assets
Not the right fit
- Changing file contents
- Cloud-only automation
- Server-side scheduled jobs
Related rename tools
Text replacement
Find and replace text in file names
Batch replace spaces, camera prefixes, duplicate markers, and repeated text in file names with live preview and undo protection.
Numbering
Add sequential numbers to file names
Batch add padded sequence numbers, custom prefixes, and ordered numbering to photos, documents, exports, and project files.
Advanced matching
Rename files with regular expressions
Use regex capture groups to restructure file names, clean dates, extract numbers, and rename complex batches safely.
Related guides
Windows workflow
Batch file renamer for Windows
Use Renamio on Windows to batch rename files with preview, regex, numbering, date rules, cleanup, extension repair, and rename history.
Open guideMulti-file workflow
Rename multiple files at once
Rename many files at once with local preview, reusable rules, sequence numbers, text cleanup, and undo-oriented history.
Open guidePreview-first workflow
Bulk rename files with preview
Use a preview-first batch rename workflow to catch wrong rules, duplicate names, extension mistakes, and unsafe outputs before applying changes.
Open guideFAQ
What is the safest way to batch rename files?
Use a preview-first workflow: apply rules to a preview table, check collisions, then rename only after the output names look correct.
Do I need regex for every batch rename?
No. Most folders can be cleaned with replace, remove, insert, date, and sequence rules. Regex is useful when names follow a more complex pattern.
Preview the rename before changing files
Use Renamio locally on Windows or macOS to test the naming pattern, catch collisions, and keep rename history for review.