Transform
Compress, convert, resize, trim or zip any file you drop on it. Transform is part of Droppy, so there is nothing to install, and every file stays on your Mac.
Transform is the one place Droppy changes files. Drop a batch on it, pick what it should become, and watch the size it will have before you run it. Finished results stack up in the bottom-right corner of your screen, ready to drag out, reveal in Finder or copy.
Where to find it
Quick ActionThe first tile in the file tray, in the notch and floating. See Quick Actions.
Item menuRight-click a file in the file tray or a floating file tray, choose Transform, then what to do. The batch opens with that operation picked.
ThunderstormPress ⌘K on a file in Thunderstorm and choose Transform.
FinderSelect files and choose Transform with Droppy from Finder's Services menu.
Command CenterThe Transform tile opens an empty window, ready for a drop or Choose Files.
AI appsWith MCP on, Claude, Cursor and Codex can transform files you name, after you allow it.
What it does
Transform only offers what fits the files you gave it, and the order follows what most of them are.
CompressMakes images, videos and PDFs smaller, by quality or to a size you type.
ConvertChanges the format of images, video, audio and documents.
Resize and rotateScales images and videos down, and turns or flips images, videos and PDF pages.
TrimKeeps part of a video or an audio file.
Make GIFTurns a video into an animated GIF.
Video sound and speedExtract audio, Remove audio, and Frame rate, for 24, 30, 60 or 120 fps or any rate you type.
PDFsCombine PDFs and images into one PDF, or split a PDF into one file per page.
Clean upRemove background cuts the subject out of a photo, and Remove metadata strips location, camera and author details.
FilesZip a batch, Extract zip, tar, 7-Zip and RAR archives, or Rename a batch at once.
Settings
Settings, Transform holds what Transform remembers.
Save toNext to the original, Downloads, or a folder you choose. A file in a temporary folder goes to Downloads instead.
Show in FinderReveals the results once Transform is done.
Move originals to the TrashOnly for edits that replace a file, such as compress or convert.
Defaults and presetsThe image, video and PDF quality Transform starts from, and the presets the window offers.
OperationsA switch for each operation. One you turn off leaves the window and the item menus.
Extra formatsMP3 output, video containers macOS does not open, and an exact size for videos use FFmpeg, and PDF compression uses Ghostscript. Each installs through Homebrew, only when you press Install.
The folder you picked for the Converter Droplet, or for Smart Export on the General page, is where Transform saves when you have not chosen anything else.