The app / The details that matter

Consider the image.
Then the file.

A focused toolkit for the practical side of image making. Native to your Mac, and ready for the way you work.

The Transmogrifier with live original and export previews, quality controls, and a file-size budget.
The Transmogrifier 1.2 / Made for macOS
01

Live preview & comparison

See what you’re saving.

See actual encoded file sizes as you work. Compare the original and export with a wipe, shared zoom, 100% inspection, and backgrounds for transparent images.

How it works
02

File-size limits

Make the size part of the brief.

Set a per-file budget and the lowest quality you’re happy with. The app finds a fit within your settings, and reports any output that cannot meet the limit.

How it works
03

Responsive image packs

Send every size together.

Export up to eight WebP widths, with optional JPG fallbacks. Actual-width filenames and copyable srcset make the handoff that little bit easier.

How it works
04

Reusable export recipes

Put a good process on repeat.

Save format, dimensions, quality, size limits, widths, naming, and destination as one preset. The next batch starts with the decisions already made.

How it works
05

History & recovery

Pick up where you left off.

Search jobs, reveal outputs, reuse settings, rerun a batch, or retry unfinished variants. Cancelling a job preserves the work already completed.

How it works
06

A native Mac workflow

Keep your hands moving.

Command-O to add. Command-Return to export. Choose a saved preset for optional automatic conversion when you open files from Finder or drop them on the Dock.

How it works

Good with your files.

  • Import JPG, PNG, WebP, HEIC, TIFF, BMP, GIF, ICNS and ICO.
  • Export WebP, JPG or lossless PNG. Still images only.
  • Resize within maximum dimensions. Keep proportions and orientation. Smaller originals are never enlarged.
  • Save beside originals or into a chosen folder. Rename, Skip or Overwrite rules, with optional folder preservation.
  • Add files or folders in a batch, including subfolders when you choose.
  • Intel and Apple Silicon. macOS 12 Monterey or later.