PhotoMill
PhotoMill is a macOS batch photo utility for converting images, editing metadata, renaming files, and applying watermarks and adjustments.
What is PhotoMill?
PhotoMill is a native Mac photo utility that helps users process many images at once. It is designed for photographers, content creators, and anyone who needs to convert files, rename batches, adjust image settings, or clean up photo metadata more efficiently than doing each task by hand. The app combines batch conversion, metadata editing, resizing, cropping, watermarking, and color adjustments in one workflow, and it also includes a built-in photo browser for reviewing files before export. PhotoMill supports common image formats used in everyday editing and sharing, and it includes tools for removing private metadata such as GPS details when preparing photos for clients or the web. Published by Gwinno, it is aimed at macOS users who want practical batch image management without moving their work into a cloud service.
Key features
- Convert batches of images to common formats including JPEG, PNG, TIFF, HEIC, GIF, BMP, PDF, and WEBP.
- Rename many photo files at once using text, dates, indexes, and metadata-based naming rules.
- Edit EXIF and IPTC metadata, including capture dates, copyright, keywords, ratings, and GPS details.
- Resize, crop, trim, rotate, flip, and change image resolution in batch workflows.
- Add text or image watermarks to multiple photos at the same time.
- Adjust color and tone with tools such as exposure, contrast, sharpness, grayscale, sepia, and channel controls.
- Preview changes before conversion with side-by-side comparison tools.
- Browse and search photo collections with image details, labels, ratings, and filtering options.
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Safety overview
Status: Mostly safe
PhotoMill is a legitimate batch photo editor for Mac. Access to your pictures and image metadata is normal for its purpose, and features such as metadata editing or removal can intentionally change file information, so it is wise to work on copies when the originals matter. If you use it to remove GPS or copyright fields, double-check the export settings before processing a large batch.
Recommendation: Keep PhotoMill if you actively batch-convert, rename, watermark, or clean metadata in photos on your Mac. If you no longer use it, removing the app is usually fine, but save any custom workflows or presets first if they matter to your editing routine.
Common paths
/Applications/PhotoMill.app
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