Shorten Text with AI on Mac

Shorten Text with AI on Mac

Long-winded text is everywhere: a three-paragraph update that should be three sentences, a quote that needs trimming, a message that buries its point. Shortening it by hand is tedious. On a Mac, you can do it from your clipboard with AI in a couple of keystrokes.

This guide shows how to shorten copied text on macOS using ClipHistory's Summarize transform.

The fastest place to shorten text is the clipboard

You usually want to shorten text right after you copy it. A clipboard manager makes that immediate. ClipHistory stores your 150 most recent unpinned clips plus unlimited pinned ones, and runs AI transforms — including Summarize — on any clip in that history.

Shorten a clip in four steps

1. Copy the long text

Copy the passage you want to condense from any app.

2. Open ClipHistory

Press Cmd+Shift+V to bring up your clipboard history.

3. Run Summarize

Select the clip and choose the Summarize transform. ClipHistory sends it to your configured AI provider and returns a shorter version as a new clip.

4. Paste the short version

Press Cmd+V to drop the condensed text where you need it.

Summarize vs. bullet points vs. rewrite

ClipHistory's transforms each do a specific job:

If your goal is a tighter paragraph, Summarize is the one. If you want a checklist out of a wall of text, use the bullet-point transform instead.

Use your own AI key

ClipHistory works with five providers — Anthropic, OpenAI, DeepSeek, Google, or a custom endpoint — using your own API key. You choose the model and pay your provider directly; there's no markup and no ClipHistory account. The app has no cloud backend, so your clipboard history stays on the Mac and only the clip you summarize is sent to your provider.

Practical uses

Save recurring summaries

If you summarize the same kind of content often, pin the result or store it as a snippet so it survives past the 150-clip window and you don't pay to regenerate it.

Getting better summaries

The quality of a summary depends on two things: the source text and the model. A few habits help.

Clean before you summarize

If the clip came from a PDF or webpage, it may carry broken line breaks and stray formatting. That noise can confuse the model and produce a worse summary. Run the Clean transform first, then Summarize the tidied clip. Two transforms in sequence still take seconds and the result is noticeably better.

Pick the right model

Because you bring your own provider, you can compare. Some models compress aggressively; others keep more nuance. If summaries come back too terse or drop a detail you needed, switch the model in settings and run it again. With your own key, the only cost is what your provider charges per call.

Keep summaries reviewable

A summary is a starting point, not a final answer. The condensed clip lands in your history, so you can open the original clip alongside it and compare before you paste. Pin the original if it's something you'll want to re-summarize later with a different model.

Building a short-text workflow

For people who shorten text all day, a repeatable loop saves the most time:

  1. Copy the long passage.
  2. Open ClipHistory with Cmd+Shift+V.
  3. Clean, then Summarize if the source is messy.
  4. Paste the short version and skim it once.

For longer jobs, queue several passages in the paste stack, summarize each, and paste them back in order into a single document. Group them on a board if they belong to the same project so you can find them again later.

Requirements

ClipHistory runs on macOS 12 or later as a universal binary for Apple Silicon and Intel, and is signed and notarized by Apple, so Gatekeeper opens it without warnings.

Summary

To shorten text with AI on Mac, copy the passage, open ClipHistory with Cmd+Shift+V, run the Summarize transform with your own AI key, and paste the condensed result. Clean messy source text first for a better result, compare models when needed, and keep the original clip around to review against. No app switching, no account, and your history stays local.


Ready to put AI to work on your clipboard? Get ClipHistory for macOS ($19.99) — a one-time payment, 12-month license, no auto-renewal. Signed and notarized by Apple, runs on Apple Silicon and Intel, and everything stays local on your Mac.