Can I describe the tone in my own words?

Yes. The Rewrite transform takes a plain-English direction, so you can ask for 'confident but not pushy' or 'warm and apologetic' rather than picking from fixed presets.

Does changing tone overwrite my original text?

No. Your original clip stays in history. The rewritten version is a new result, so you can compare both or revert at any time.

Which AI providers can I use?

Five: Anthropic, OpenAI, DeepSeek, Google, or a custom endpoint. You add your own API key and the transform calls that provider directly from your Mac.

Is there a monthly fee?

ClipHistory is a one-time $19.99 purchase with a 12-month license and no auto-renewal. You pay your AI provider separately for the API usage you trigger.

Change the Tone of Text on Mac (AI App)

Change the Tone of Text on Mac

The same message can read as curt or warm, casual or executive, depending entirely on tone. Rewriting by hand to hit the right register is slow, especially when you're switching between a client email and a Slack reply minutes apart. This guide covers how to change the tone of copied text on a Mac using an AI clipboard transform.

When tone matters most

A few situations where shifting tone earns its keep:

Turning a blunt internal note into a polite customer reply.
Making a rambling message tighter and more direct.
Softening a "no" so it lands without friction.
Translating a casual draft into something appropriate for a formal document.

You already have the words. You just need them dressed differently.

How tone changes work in ClipHistory

ClipHistory is a clipboard manager for macOS that stores your last 150 clips and layers AI transforms on top. The Rewrite transform handles tone: you give it text and a direction, and it returns the same meaning in a different voice.

The flow:

Copy your draft (Cmd+C).
Press Cmd+Shift+V to open clipboard history.
Pick the clip and choose Rewrite.
Tell it the tone you want — more formal, friendlier, more concise — and paste the result.

Your original draft stays in history, so you can compare versions or revert instantly.

Common tone directions

You're not limited to presets. Useful directions include:

More formal — for contracts, proposals, and senior stakeholders.
More concise — strip filler, keep the point.
Friendlier — add warmth without losing professionalism.
More direct — remove hedging and get to the ask.

Because the request goes to a real language model, you can phrase the direction in plain English: "make this sound confident but not pushy." You can also stack qualifiers — "more concise and a bit warmer" — and the model balances them in a single pass rather than forcing you to run two separate edits.

Your key, your model, your Mac

ClipHistory uses your own API key. You pick one of five providers — Anthropic, OpenAI, DeepSeek, Google, or a custom endpoint — and the transform calls it directly. There's no ClipHistory account and no cloud database of your clips.

That means:

The text you rewrite never passes through a ClipHistory server.
You choose the model, balancing speed against quality per task.
Costs are billed by your provider, not bundled into a subscription.

Tone shifting versus full rewriting

Changing tone and rewriting for clarity overlap, but they're different intentions:

Tone shift keeps the structure, changes the register.
Clarity rewrite restructures sentences for readability.
Summarize cuts length while preserving key points.

Keeping these as distinct transforms means you get the result you asked for instead of an unpredictable mix.

A worked example

Original (blunt internal note):

Can't do Friday. Pick another day.

Rewrite with "friendlier and more professional":

Friday won't work on my end, unfortunately. Could we find another day that suits you? Happy to be flexible.

Same message, very different reception. Two keystrokes and a direction.

Reusing your favorite tones

If you constantly shift drafts to the same register — say, a consistent support-reply voice — pin the polished output as a reference, or save a snippet for the recurring openers and closers. Pinned clips don't expire from your 150-clip history, so your house style stays at hand.

Building a tone playbook

Teams and solo writers both benefit from a small, consistent set of tones. Rather than reinventing the register each time, decide on a handful and reuse them:

Customer-facing: warm, clear, never defensive.
Internal: direct and brief, skip the pleasantries.
Executive: concise, confident, leads with the outcome.

Save the opening and closing lines for each as snippets, and let the Rewrite transform handle the body. Over time you spend less effort deciding how to say something and more on what to say.

Tone shifting and translation

Tone and language are different axes. If you need a message that's both in another language and in a particular register, you can chain transforms: Translate first, then Rewrite the result to the tone you want. Because each transform leaves the previous version in your history, you can step back if a translation loses nuance before you apply the tone pass. Keeping the two operations distinct means neither one quietly undoes the other.

Setup at a glance

macOS 12 or later (universal binary: Apple Silicon and Intel)
ClipHistory installed (signed and notarized by Apple)
Your provider API key entered in Settings
Cmd+Shift+V, select clip, choose Rewrite, state the tone

Get ClipHistory for macOS

Hit the right tone every time without retyping. Get ClipHistory for macOS — $19.99, one-time (12-month license, no auto-renewal) and reshape any clip with a shortcut.