The document becomes Markdown. On your phone.

// 01 · what it is for

Two problems, one gesture.

Handing a document to a language model costs you twice. Once in tokens: office formats carry far more of them than the content needs, and if the alternative is photographing the pages the bill gets worse. The second cost does not show on the invoice: minutes of a meeting, an invoice or a staff list contain names, tax codes and bank accounts, and pasting them into a chat means handing them to a third party.

Markdown says the same things with fewer characters. Redaction takes the people out and leaves the document readable. Here the two happen together, in a single share.

// 02 · how to use it

Share it, or pick it.

The natural gesture is the first one: Mr. Rao is a step you pass through, and you find it inside the share sheet, where the document already is. But it also opens from the app drawer, and there you pick the document yourself.

1. Open the document where you already have it. WhatsApp, email, a file manager, Drive.
2. Tap Share — or "Open with" — and choose Mr. Rao.
3. Tap Copy. The app opens with the work already done. Go to the chat and paste.

If you open Mr. Rao from the app drawer instead, there is "Pick a document", which opens the phone's file picker: from there nothing changes, the document you pick takes the same route as a shared one. It works with selected text in any app too. And if you would rather have a file, Save .md puts one wherever you want.

If you have never used it, «Try an example» converts a fake document that lives inside the app: you see what happens without giving it anything of yours. The three dots at the top right hold «How it works» and the language — Italian or English, for the whole app, so the report and the placeholders come out in the language of whoever receives the document.

// 03 · what comes out

The people leave, the document stays readable.

## Attending

- Mario Rossi,
  tax RSSMRA80A01H501U
- Giulia Bianchi,
  [email protected]

Amount: euro 12,500.00
to IBAN IT60X05428111
01000000123456

## Attending

- {{NAME_1}},
  tax {{CODICE_FISCALE_1}}
- {{NAME_2}},
  {{EMAIL_1}}

Amount: euro 12,500.00
to IBAN {{IBAN_1}}

The placeholders are numbered, and that is not decoration: without numbers three different people would all become the same {{NAME}}, and "{{NAME}} quoted {{NAME}} in front of {{NAME}}" stops meaning anything. The same person keeps the same number throughout the document.

The amount stayed. Amounts and dates are off by default: removing them always would make an invoice or a council resolution unreadable without protecting anyone. If your case is different, two taps turn them on.

// 04 · the network

Not a promise. A permission that is not there.

Most apps that say "your data does not leave" are asking you to trust them. Here you can check for yourself, in ten seconds: Settings → Apps → Mr. Rao → Permissions.

Without that permission it is the operating system that refuses every connection. Not a check in our code, which could have a defect: a rule of the system, which holds even if our code is wrong and even if a third-party library tried to phone home. The document lives in memory only and goes away when you close the app.

// 05 · limits

What it does not do.

For a sense of scale: an issue of the Italian Official Gazette, 208 pages, weighs 2.3 MB and converts in under a second.

// 06 · questions

What everybody asks.

// 07 · source

The code, to whoever asks for it.