Macで複数ファイルの名前を一括変更（リネーム）する方法
File Actureを使えば、複雑なコマンド不要で複数ファイル名を連番や日付プレフィックスで安全に一括変換できます。
2026年11月10日に更新読了時間 約3分
File Actureチーム
Raw photos straight out of cameras, scanned contracts, and downloaded invoices often come with cryptic names like IMG_9402 or doc-output-final-2. Organizing projects requires consistent naming conventions.
Applying sequential numbering, project prefixes, and ISO date stamps turns file clutter into an organized library. Here is how to batch rename files on Mac.
Best practices for naming project files
Consistent naming conventions make files easily searchable in Spotlight and Finder. Using the ISO standard date format (YYYY-MM-DD) ensures files sort chronologically regardless of operating system.
Adding sequential numbers with leading zeroes (001, 002) prevents ordering glitches in list views.
How to batch rename multiple files on Mac
- 1
Open File Acture and select Batch Rename
Launch File Acture on your Mac and open the file organizer tool.
- 2
Drag your files into the rename window
Add photos, PDFs, or an entire folder of unsorted documents.
- 3
Set numbering rules and click Rename
Preview new names live and apply the changes to all files instantly.
連番や日付ルールでファイル名を一括リネーム。
無料で試せます · デバイス上で動作
よくある質問
Can I preview new file names before applying the changes?
Yes. File Acture displays a live side-by-side preview showing existing names alongside projected new names before you execute.
Does batch renaming work on file extensions?
Yes. You can standardize extensions (such as changing uppercase .JPEG to lowercase .jpg) across whole folders.
Can I add leading zeros to sequential numbers?
Yes, you can configure numbers with 2, 3, or 4 digits (e.g. 001, 002) so sorting stays orderly.
Does renaming touch the internal content of my files?
No. Renaming only updates the filesystem catalog entry; file contents, creation timestamps, and data streams remain untouched.