Pressto

Presets turn prompts into one-key transforms. Not a chat.

Version 0.1.0 beta · macOS 26 or later · Apple silicon and Intel
Signed and notarized

The loop

Press the hotkey — ⌃ ⌥ ↩ by default. A panel opens at the pointer.
Paste or type your text.
Pick a preset with ⌘1–⌘9 and press ↩.
The result streams in and is copied when it changes the text. Paste it back where you were working.

What it is, and isn't

Pressto	Not Pressto
One-shot transforms you name and reuse	Multi-turn chat
Your own API keys, or On Device	Hosted tokens or an account
Preset packs you can share as JSON	Cloud sync of your text
Copies only when the transform changed something	Typing into other apps for you

Presets

A preset is a name, a provider, a model, and your instructions. Fresh installs start with Fix, Make Concise, and Improve Prompt, plus bundled Writing, Prompts, and Translate packs. Build your own, export them as a file, and send them to someone else — exports never include API keys.

Bring a key from OpenAI, Anthropic, Google, xAI, Groq, or Cerebras, or point a preset at any OpenAI-compatible endpoint, including a model server running on your own machine. On Device transforms use Apple's Foundation Models and need no key at all.

Privacy

No Accessibility access, no synthetic keystrokes, and Pressto never reads your pasteboard.
Panel text is never written to disk or logged. There is no transform history.
API keys live only in the macOS Keychain, never in presets or exports.
No analytics, no account, no developer-operated server. Cloud transforms go straight from your Mac to the provider you chose.

Read the full privacy disclosure

Beta

Version 0.1.0 is an early beta. It updates itself through a signed feed, so you will get fixes automatically. If something is wrong or missing, telling me is the most useful thing you can do: [email protected].