Can it make casual text sound professional?

Yes. The Rewrite transform reshapes tone and formality, so a quick casual note becomes a polished professional one while keeping the same meaning.

Is Rewrite different from Summarize?

Rewrite changes the style and shape while keeping the message; Summarize condenses it into fewer words. For style shifts, use Rewrite.

Does my draft leave my Mac?

Only as the AI request you trigger, sent directly to your own API provider. There's no ClipHistory cloud or stored copy.

Can I reuse a style I like?

Save the rewritten result as a snippet to drop it in instantly later, or pin it so it never rolls out of history.

Change Your Writing Style with AI on a MacBook

The same idea needs different clothes depending on where it's going. A note to a teammate can be blunt; the same point in a client email needs polish; a line for documentation needs to be neutral and clear. Rewriting by hand for each audience is real work. On a MacBook you can shift the style of copied text with an AI transform instead.

Style is a rewrite problem, not a thesaurus problem

Changing writing style isn't about swapping words — it's about reshaping sentences, adjusting formality, and matching tone to context. That's exactly what a language model is good at, and it's why ClipHistory's Rewrite transform is more useful than a synonym lookup.

Copy the text, press Cmd+Shift+V to open your clip history, select the clip, and run Rewrite. The restyled version returns to your clipboard, ready to paste.

Common style shifts

Here are the moves people reach for most:

Casual to professional

You jotted: "hey can you send me the file when you get a sec." Rewrite turns it into: "Could you send me the file when you have a moment? Thanks." Same request, appropriate register.

Professional to plain

A dense, jargon-heavy paragraph becomes something a non-expert can follow. Useful when you're translating internal language for an external audience.

Long-winded to concise

Rewrite can tighten as it restyles — fewer words, same point. (If pure shortening is your goal, the Summarize transform is the more direct tool.)

Neutral to warm (or the reverse)

Adjusting tone — adding warmth to a curt message, or removing emotion from a heated one — is one of the most practical uses. It's much easier to let AI find the diplomatic phrasing than to wrestle with it yourself.

You control the model behind the style

Every Rewrite runs through the AI provider you've connected with your own API key: Anthropic, OpenAI, DeepSeek, Google, or a custom endpoint. The text travels from your MacBook directly to that provider and back. There's no ClipHistory cloud, no account, and nothing stored on a remote server. Your clip history stays on your machine, and the app is signed and notarized by Apple, running on macOS 12+ across Apple Silicon and Intel.

That matters for style work specifically, because you're often rewriting real messages — emails to named people, drafts of sensitive replies. Keeping the data path to just "my Mac → my AI provider" is meaningfully different from pasting into a public rewriting website.

Chain transforms for a finished result

Because each transform's output is a new clip, you can stack them:

Clean to strip formatting from pasted-in text, then Rewrite for style.
Rewrite for tone, then Summarize if it ran long.
Translate, then Rewrite to make the translation read naturally.

Save the styles you use constantly

If you keep rewriting toward the same voice — your standard "polite decline," your house tone for support replies — save a good result as a snippet. Snippets let you drop the phrasing in instantly without re-running the transform, and they survive beyond the 150-clip rolling window along with pinned clips.

Developing a consistent voice across your writing

Style isn't only about one message at a time — it's also about sounding consistent. If your support replies, release notes, and customer emails all drift in tone, readers notice. A clipboard-based rewrite workflow helps you converge on a house voice without a style guide nobody reads.

The practical method: rewrite a few representative messages until they sound right, then save those as snippets and boards. A board groups related clips and snippets, so you might keep a "support voice" board with your standard phrasings, and a "release notes" board with another register. When you need to write something new in that voice, you're pasting from an established pattern rather than reinventing the tone each time.

Over time this turns scattered one-off rewrites into a small, reusable library of how you want to sound — assembled from real messages you actually sent, not abstract rules.

Everything stays on your Mac

Because style work means rewriting genuine drafts, privacy is the same story as the rest of ClipHistory: there's no account and no cloud, your clip history lives locally, and the only network call is the AI request you trigger, sent straight to your own provider. The app is signed and notarized by Apple and runs as a universal binary on Apple Silicon and Intel under macOS 12+. The global shortcut Cmd+Shift+V keeps the whole toolkit one keystroke from wherever you write.

The workflow

Copy the text whose style you want to change.
Cmd+Shift+V to open ClipHistory.
Run Rewrite and steer toward the register you need.
Chain Clean, Summarize, or Translate if useful.
Paste, pin, or save as a snippet or board.

A few keystrokes turn a rough thought into the right tone for the moment — without leaving your app or handing your text to a website.

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 macOS 12+, and everything stays local on your Mac.