How to Batch Rename Files on Mac, Windows, and Linux

If you've ever received a folder full of files named IMG_4392.jpg, IMG_4393.jpg, IMG_4394.jpg... you know the pain. Renaming them one by one is not an option when you have hundreds or thousands of files.

The Problem

Every device creates files with meaningless names. Your iPhone creates IMG_XXXX, your scanner creates Scan001, your downloads folder is full of document (3).pdf. When you need to find something later, these names are useless.

Method 1: Use DocSync (Fastest — Any Platform)

The fastest way to batch rename files is to use DocSync — a free tool that lets you:

1. Drag and drop any number of files

2. Pick a naming convention (date prefix, sequential, kebab-case, etc.)

3. Download all renamed files as a .zip

No installation needed. Works in your browser. Try it free at docsync.app

Method 2: Mac Finder (Built-in)

macOS Finder has a built-in batch rename feature. Select multiple files, right-click, and choose "Rename Items." You can add text, replace text, or use a sequential format. It's basic but works for simple jobs.

Method 3: Windows PowerRename (Free)

Microsoft's PowerToys includes PowerRename, which uses regex to batch rename files. Install PowerToys from the Microsoft Store, then right-click selected files and choose PowerRename.

Method 4: Command Line (Linux/Mac)

For terminal lovers, the rename command is powerful. On Ubuntu, install with sudo apt install rename, then use patterns like rename 's/IMG_/photo_/' *.jpg.

Best File Naming Conventions

Whatever method you use, these naming patterns keep files organized:

• **Date prefix**: `2026-02-20_quarterly-report.pdf` — great for documents that need chronological sorting

• **Project prefix**: `acme-project_budget-v2.xlsx` — great for client work

• **Sequential**: `photo-001.jpg`, `photo-002.jpg` — great for media files

• **Kebab case**: `my-important-document.pdf` — universally readable, no spaces

Conclusion

Life is too short to rename files one at a time. Use DocSync for the fastest, most flexible approach, or use the built-in tools on your OS for simpler jobs.