Desktop app · Free early access
Quantum Redact removes UK personal data from Word documents, PDFs and text files, entirely on your own computer. Nothing is uploaded, so client and patient data never leaves your organisation.
Mac (Apple silicon) and Windows · Version 0.1
![Quantum Redact review screen: counts of names, addresses, postcodes, emails and phone numbers removed, a flagged passage to check, and redacted passages with tags such as [NAME] and [POSTCODE].](/assets/img/redact-review.png)
How it works
A one-page letter takes about a second on a modern laptop.
Drop in a Word document, a PDF with selectable text, or a text file, or paste text straight in.
Our AI model reads each passage and replaces personal data with clear tags such as [NAME] and [POSTCODE]. Pattern rules then catch any structured identifiers it missed.
Every change is listed, with any doubtful passages flagged first so a person can check and correct them.
Save as Word or text. Each save also writes a short report of what types of data were removed, without ever recording the data itself.
What it finds
Organisation names, case and order references, prices, and dates that aren’t dates of birth are left as they are.
Privacy and safety
Download
Each download is about 1 GB, because the AI model is included so the app works without an internet connection.
Apple silicon (M1 or later), macOS 13 Ventura or newer.
First time you open it: this early version isn’t yet signed by Apple, so macOS will warn you. Click Done, then go to System Settings → Privacy & Security and click Open Anyway.
Windows 10 or 11, 64-bit.
First time you run the installer: this early version isn’t yet code-signed, so Windows may show “Windows protected your PC”. Click More info, then Run anyway.
Downloads are hosted on Hugging Face. By downloading, you agree to use the app as described on this page. Automated redaction can miss personal data or remove too much: always review documents before sharing them.
Questions
Yes, during early access. We’d love your feedback in return. If you want to use it across a team or need help adapting it to your documents, talk to us.
No. The AI model runs on your computer and the app makes no network connections. You can check this by switching off your internet connection: it works exactly the same.
No automated tool can guarantee that. Quantum Redact flags passages it’s unsure about, but a person should always review documents before sharing them. Redacted text can sometimes still identify someone through context.
Formatting such as bold words inside a changed paragraph is lost. PDFs are saved as Word or text, not as redacted PDFs, and scanned PDFs aren’t supported yet. Footnotes, comments and tracked changes in Word files aren’t processed yet. It detects UK English personal data in the ten categories above.
The AI model is included in the app, so it works offline from the moment it’s installed, with nothing to download later.
Not yet. The Mac version needs Apple silicon (M1 or later) and macOS 13 Ventura or newer.
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