Make Text Formal With AI on Mac

Make Text Formal With AI on Mac

There is a gap between how you draft and how you send. A quick note to a colleague reads fine internally, but the same words sent to a client or an executive can feel too loose. Adjusting tone by hand means rereading every sentence. On a Mac, you can hand the tone shift to AI and keep moving.

Formalizing text from the clipboard

The fastest way to formalize text is to do it where the text already lives, the clipboard. ClipHistory adds AI transforms to your clipboard history, so you can adjust tone without opening another app.

The flow:

1. Copy your draft (Cmd+C).
2. Press Cmd+Shift+V to open clipboard history.
3. Select the clip and run the Rewrite transform, asking for a more formal tone.
4. Paste the polished version (Cmd+V).

The formal version returns as a new clip, so your casual original stays available if you need to dial it back.

What "formal" should and should not change

A good formalization keeps your meaning and removes informality: contractions, slang, filler, and overly casual phrasing. It should not inflate your text with jargon or make it longer for the sake of sounding important. If the rewrite drifts too far, run it again with a lighter touch or edit the result, your original is still in history.

Formal vs. just cleaner

Be clear about what you are after. If your text is casual but otherwise fine, Rewrite for tone is the right move. If it is choppy with stray line breaks from a paste, run Clean first, then formalize. If it is simply too long, Summarize is the tool.

You bring the AI provider

ClipHistory does not host an AI model. You connect your own API key from Anthropic, OpenAI, DeepSeek, Google, or a custom endpoint. That means you pay your provider directly, and the text you formalize goes only to the provider you chose. There is no ClipHistory account and no cloud relay storing your drafts.

Only the specific text you transform is sent, and only when you trigger it. The rest of your clipboard history stays on your Mac.

Build a tone library with snippets

If you send similar formal messages often, opening lines, sign-offs, standard responses, save the polished versions as snippets. A snippet pastes with a keystroke, so you reuse your best phrasing instead of regenerating it.

A note on judgment

AI is good at smoothing tone, but it does not know your relationship with the recipient. Read the result before sending. The goal is to save the mechanical work of formalizing, not to outsource the decision of what to say.

A worked example

Take a casual line: "thanks a ton, this is super helpful, I owe you one." Copy it, open clipboard history with Cmd+Shift+V, and run Rewrite asking for a formal tone. You get back something closer to a measured thank-you that fits a client email, without the slang or the IOU. If it reads stiff, run it again and ask for "formal but warm." Your casual original is still in history, so you can always fall back to it.

This is the practical value of doing it from the clipboard rather than a web tool: the iteration loop is short. Generate, glance, regenerate if needed, paste. No tab switching breaks your concentration on the message itself.

Your own provider, your data

The Rewrite transform runs through the AI provider you connect with your own API key, one of Anthropic, OpenAI, DeepSeek, Google, or a custom endpoint. You pay your provider directly, with no markup. There is no ClipHistory account, no sign-up, and no cloud relay. Only the clip you formalize is sent, and only at the moment you trigger it; the rest of your clipboard history stays on your Mac. For sensitive correspondence, a self-hosted endpoint keeps the text on infrastructure you control.

When formalizing is worth it

Formalizing every message would be overkill. The cases where it pays off are the ones with stakes or visibility: a reply to a client, a note to someone senior, an email that will be forwarded, or anything going to a person you do not know well. For internal chat with a teammate, your casual draft is usually fine as is.

A good rule is to draft fast and formalize last. Write the message the way you would say it, get the substance right, and only then run Rewrite to lift the tone. That keeps the AI focused on register rather than content, which is what it handles best. The model is smoothing how you say it, not deciding what you say.

Requirements

ClipHistory is signed and notarized by Apple and ships as a universal binary for Apple Silicon and Intel Macs. It requires macOS 12 or later. The license is a one-time $19.99 payment for 12 months with no auto-renewal. Your clipboard keeps 150 unpinned clips plus unlimited pinned ones, so your draft and the formal version coexist.

Get ClipHistory for macOS for a one-time $19.99 at https://cliphistory.com/download and shift tone with one shortcut.