How many items does the Mac clipboard hold?

By default, exactly one. Each copy replaces the previous item. To keep a history, you need a clipboard manager.

Is there a maximum size for what I can copy on a Mac?

There's no fixed item count. The practical limit is available RAM. Normal text and images copy without issue.

How do I keep more than one clipboard item?

Install a clipboard manager. ClipHistory keeps 150 unpinned clips plus unlimited pinned clips, stored locally on your Mac.

Does a clipboard history sync to the cloud?

With ClipHistory, no. Everything stays local — no account, no cloud, no sync server.

The Mac Clipboard Limit, Explained

People search for "the Mac clipboard limit" expecting a number like 25 or 100. The real answer surprises most users: the macOS clipboard holds exactly one item at a time.

The default macOS clipboard holds one item

When you copy something, it replaces whatever was there before. There is no built-in history, no scrollback, no "last 10 things I copied." Copy a phone number, then copy an address two seconds later, and the phone number is gone for good.

This is by design. macOS keeps the clipboard simple and the pasteboard server lightweight. The trade-off is that the limit isn't really a limit — it's a depth of one.

Is there a size limit on what you can copy?

There's no hard cap you'll hit in normal use. You can copy a few words or several pages of formatted text. Very large items — say, a high-resolution image or a huge file selection — are held by reference where possible, so memory pressure rarely becomes an issue for everyday copying. The practical ceiling is your available RAM, not a fixed item count.

Why "one item" feels like a limit

The single-item depth bites in predictable moments:

You copy a confirmation code, switch tabs, accidentally copy a URL, and lose the code.
You're moving five values from a spreadsheet into a form and have to alt-tab back and forth for each one.
You copy something you'll need in ten minutes, then forget and overwrite it.

None of these are bugs. They're the cost of a depth-one clipboard.

What raises the limit: a clipboard manager

A clipboard manager records each copy into a history so you're no longer limited to the most recent item. This is the single biggest quality-of-life upgrade for anyone who copies and pastes all day.

ClipHistory keeps your last 150 unpinned clips plus unlimited pinned clips. The 150 number is deliberate: it's enough to scroll back through a full work session, but small enough to stay fast and searchable. Anything you want to keep permanently — your address, a code snippet, a signature block — you pin, and it never rotates out.

Everything stays local on your Mac. No account, no cloud, no sync server holding your clipboard.

How to use clipboard history in practice

With ClipHistory installed, press Cmd+Shift+V to open the history. From there you can:

Scroll or search past clips and paste any one of them
Pin the items you reuse constantly
Build a paste stack to drop several copied values in sequence
Run AI transforms on a clip (summarize, rewrite, translate, clean) using your own API key from one of five providers

The depth-one limit goes away, and you stop re-copying things you already had.

The short version

macOS clipboard depth: 1 item
Size limit: effectively your RAM, no fixed count
To get a real history: use a clipboard manager
ClipHistory: 150 unpinned + unlimited pinned, all local

Get ClipHistory for macOS

Turn the one-item clipboard into a searchable history. ClipHistory is signed and notarized by Apple, a universal binary for Apple Silicon and Intel, macOS 12+. One-time $19.99 (12-month license, no auto-renewal). Download ClipHistory.