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# Installing PDF Daisy on macOS

PDF Daisy for Mac is **code-signed** with an Apple Developer ID and **notarized** by Apple, so it installs like any other Mac app — no security workarounds needed.

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## Which download do I need?

There are two Mac downloads. Pick one:

| Download | Runs on | Size |
|---|---|---|
| [PDF-Daisy-1.0.30-arm64.dmg](PDF-Daisy-1.0.30-arm64.dmg) | **Apple Silicon** Macs (M1, M2, M3, M4 and later) | ~126 MB |
| [PDF-Daisy-1.0.30-universal.dmg](PDF-Daisy-1.0.30-universal.dmg) | **Any Mac** — Apple Silicon *and* Intel | ~218 MB |

**Not sure?** Choose the **universal** download — it works on every Mac. It's just a larger file.

Requires **macOS 12 Monterey or later**.

To check which chip your Mac has: open the **Apple menu → About This Mac**.

- **Chip: Apple M1** (or M2, M3, M4…) → either download works; **arm64** is smaller.
- **Processor: Intel** → use the **universal** download. The arm64 version will not open on an Intel Mac.

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## Install

1. Download the `.dmg` file you chose.
2. Double-click it to open the disk image.
3. Drag **PDF Daisy** onto the **Applications** folder shortcut.
4. Eject the disk image (drag it to the Trash, or click ⏏ in Finder's sidebar).
5. Open **PDF Daisy** from your Applications folder or Launchpad.

The first time you open it, macOS shows a standard prompt: *"PDF Daisy" is an app downloaded from the Internet. Are you sure you want to open it?* Click **Open**. You won't see it again.

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## Updating

Download the new version and drag it into **Applications** the same way. When Finder asks, choose **Replace**. Your settings and recent files are kept.

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## Troubleshooting

- **"You can't open the application because it is not supported on this type of Mac"** — you're on an Intel Mac with the arm64 download. Delete it and install the **universal** download instead.
- **The app is "damaged" or won't open after copying from another Mac** — re-download the `.dmg` from this page; the file was likely altered or only partly copied.