Paper Ghost
PAPER GHOST

Clean your documents
before AI sees them

Strip sensitive data from PDFs, Word documents, spreadsheets, and CSVs. Detect, review, redact. All on your computer.
Your data never touches the internet.

Download for Mac Download for Windows

Paper Ghost
PDF employment_contract.pdf
7 found · 7 accepted
Original

Employment Agreement

This agreement is entered into between Emma de Vries (hereinafter “Employee”) and Bright Future BV (hereinafter “Employer”), represented by Jan Bakker, Managing Director.

The Employee can be reached at or by phone at +31 6 1234 5678. The registered address is Herengracht 421, 1017 BR Amsterdam.

Salary payments will be made monthly to account: NL91ABNA0417164300.

Redacted

Employment Agreement

This agreement is entered into between [PERSON_1] (hereinafter “Employee”) and [COMPANY_1] (hereinafter “Employer”), represented by [PERSON_2], Managing Director.

The Employee can be reached at [EMAIL_1] or by phone at [PHONE_1]. The registered address is [ADDRESS_1].

Salary payments will be made monthly to account: [IBAN_1].

DOC referral_letter.docx
9 found · 9 accepted
Original

Patient Referral Letter

Dear Dr. Sarah Mitchell,

I am writing to refer my patient, Thomas Andersen (DOB: 15/03/1987), for further neurological consultation.

Mr. Andersen can be contacted at or +44 7911 123456. His NHS number is 943 476 5919. Home address: 14 Elm Street, Bristol BS1 5QD.

Kind regards,
Dr. James Chen
Oakwood Medical Practice

Redacted

Patient Referral Letter

Dear [PERSON_1],

I am writing to refer my patient, [PERSON_2] (DOB: [DATE_1]), for further neurological consultation.

[PERSON_2] can be contacted at [EMAIL_1] or [PHONE_1]. His NHS number is [NATIONAL_ID_1]. Home address: [ADDRESS_1].

Kind regards,
[PERSON_3]
[COMPANY_1]

XLS employee_directory.xlsx
12 found · 12 accepted
Original
Name Email Phone Department Location
Emma de Vries +31 6 1234 5678 Engineering Amsterdam
Jan Bakker +31 6 9876 5432 HR Rotterdam
Sarah Mitchell +44 20 7946 0958 Legal London
Tom Visser +31 6 5555 1234 Finance Utrecht
Redacted
Name Email Phone Department Location
[PERSON_1] [EMAIL_1] [PHONE_1] Engineering [LOC_1]
[PERSON_2] [EMAIL_2] [PHONE_2] HR [LOC_2]
[PERSON_3] [EMAIL_3] [PHONE_3] Legal [LOC_3]
[PERSON_4] [EMAIL_4] [PHONE_4] Finance [LOC_4]
How it works

Drop your documents. Review. Export a clean copy. Done.

All local. No data leaves your computer.

01

Drop your file

Drag & Drop PDFs, Word docs, Excel files, or CSVs.

02

Review detections

Accept, reject, or manually add your own redactions.

03

Export a clean copy

Get back a redacted version in the original format, ready to upload to your favorite AI (or anywhere else).

Privacy by design

Built for (and by) people who take privacy seriously

100% local processing

The detection model runs on your device. Your documents are never uploaded, transmitted, or stored on any server. Not ours; not anyone's.


Human in the loop

Every detection is shown before the final export. You decide what gets redacted. Add your own selections for context-specific data no model would catch.


No telemetry. No analytics. No Big Brother.

We don't track what you redact, how often you use the tool, or what's in your documents. We just don't track you, full stop. The only network request is a license validation: your license ID and nothing else. And we also offer an air-gapped version too.

Detection

What it catches

Powered by local AI models trained specifically for PII detection.

Names
Emails
Phone numbers
IBANs
Addresses
Organizations
DOBs
IDs

Custom dictionary

Add your own project terms, internal codes, or domain jargon to catch context-specific words no model would catch.

Multilingual

Works with documents in English, Spanish, French, Italian, Dutch, German and Portuguese (more coming).

Hidden data

Metadata, comments, tracked changes, form fields and embedded attachments are all removed from the redacted file too.

Performant

Fast enough to not break your flow

Designed to be run on your work laptop. Not your gaming rig.

PDF Employment contract
Size
12 pages
Detections
85 entities
Time
under 30s
DOC Legal memo
Size
5 pages
Detections
20 entities
Time
under 20s
XLS HR export
Size
9500 cells
Detections
600 entities
Time
under 2 min
CSV CRM data export
Size
5000 rows
Detections
15k entities
Time
under 4 min
Benchmarked on an intentionally old MacBook from 2019. Performance varies by machine and document complexity.
Pricing

Pay for the size of your team, not the features.

Try it for free first: 3 files per day, personal use only.
Upgrade when you're ready.

Professional
€49
per month + VAT
1 device

For individuals and small teams.

Get started
Team
€149
per month + VAT
Up to 10 devices

For departments that handle sensitive data daily.

Get started
Business
€349
per month + VAT
Up to 25 devices

For organizations rolling it out across teams.

Get started

Need more?

We also offer an Enterprise tier for volume licensing, unlimited devices, and air-gapped deployments.

Contact us →
FAQ

Common questions

Does Paper Ghost work completely offline?
Yes. All document processing and PII detection happens locally on your machine. The only network request is a lightweight license check that sends your license ID and a random uuid. No document data, no usage data, nothing else.
What file formats are supported?
PDF with text layers, Word (.docx), Excel (.xlsx), Text (.txt) and CSV files. Scanned PDFs and images are on the roadmap.
Does redaction handle metadata and hidden data?
Yes. Every redacted file is automatically stripped of document metadata, comments, tracked changes, form fields, bookmarks, and embedded attachments. These hidden layers can contain original PII even after visible text is redacted, so Paper Ghost removes them entirely.
What languages does it support?
Paper Ghost currently performs well with documents written in English, Spanish, French, Italian, Dutch, German and Portuguese.
Can I use this for GDPR compliance?
Paper Ghost helps you remove personal data and other sensitive information from documents before sharing them with third-parties like AI services. It's a tool that assists your compliance workflow, not a legal guarantee. Always review the output.
What does the license check send?
The license check is a tiny HTTPS request with a license ID and a randomly generated UUID. That's it. Air-gapped versions are included in the Enterprise tier too.
I need to audit your software before purchasing.
We have worked with clients requiring security audits in the past. Please reach out and we can discuss your requirements and how to meet them.
I have more questions.
No problem, just contact us!

Don't stop your team from using AI.

Help them keep sensitive data out of it.

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