RenameNinja for Mac

RenameNinja is a macOS-native batch file renaming tool designed for developers and power users who need more than just drag-and-drop simplicity. Built with SwiftUI and AppKit, it combines the flexibility of regular expressions with the power of JavaScript to create highly customizable renaming workflows.

Whether you're organizing media files, processing code assets, or automating naming conventions, RenameNinja gives you full control over file metadata and naming patterns.

Key Features:

• Extract fields from filenames using Swift-style regular expressions.
• Transform extracted data with custom JavaScript logic.
• Access and manipulate metadata from images (EXIF), videos, audio files, PDFs, and Office documents.
• Build dynamic rename patterns using placeholders like {date}, {video.duration}, or custom fields.
• Preview changes in real time with color-coded field validation.
• Undo renames and revisit the last 10 sessions via the Recent menu.
• QuickLook support for original files and built-in auto-updates via Sparkle.

RenameNinja offers an unlimited free trial with no feature restrictions—just a gentle reminder at the start of each session. If you find it useful, you can purchase a license to support ongoing development.