⇧shift
Convert a copy
Six formats picked for that kind of file. The new file is saved next to the original.
Convert any file by dragging it.
Hold Shift while you drag in Finder. Drop the file into a box, and the converted copy lands beside the original.
Free. Needs a Mac with Apple silicon and macOS 14 or later.
Opening Isomer for the first time
macOS will say Apple could not verify Isomer is free of malware.
That’s because Isomer isn’t notarized by Apple yet, not because anything is wrong.
- Drag Isomer into your Applications folder.
- Double-click Isomer. When the warning appears, click Done.
- Open menu › System Settings › Privacy & Security.
- Scroll down to Security. You’ll see
Isomer was blocked to protect your Mac.
Click Open Anyway. - Enter your Mac password or use Touch ID, then click Open Anyway again.
Works with the files already on your Mac
One drag. Three things it can do.
The key you hold while dragging decides what the bar offers.
Nothing leaves your Mac.
Every conversion runs on your computer. No uploads, no account. If you allow error reports, Isomer sends only what went wrong and your versions, never your files or their names.
⇧shift⌃control
Replace the original
The original goes to the Trash only after the new file exists. Put Back restores it.
⇧shift⌥option
Tools for that file
Compress, crop, trim, redact, edit metadata and more, without opening another app.
Runs in the background. Uses almost nothing.
Isomer waits quietly in your menu bar until you drag a file. While it waits, it uses none of your Mac's processor, so your battery won't notice it's there.
- Processor use
- 0.0%
- Memory
- 35 MB
Stop opening apps to change a file.
Isomer lives in your menu bar and waits for the next drag.
Free. Needs a Mac with Apple silicon and macOS 14 or later.
Isomer is free. If it saves you time, you can buy me a coffee.
Buy Me a Coffee