Quickly detect and mask sensitive data before pasting documents, text, or images into ChatGPT, Claude, Gemini, or any other chatbot.
Automated PDF, text & image anonymization. Powered by AI & smart patterns — 100% local.
No need to manually search and redact documents by hand. Pragma Redact automatically detects sensitive information (names, addresses, ID numbers, bank accounts, emails, and more) by combining AI with smart pattern rules. Mask everything in one click — 100% on your device, with no files uploaded to Internet!
Jump straight to a tool:PDFTextImage (OCR)
100% localThe whole app runs in your browser. No data is ever sent to the internet.
Automatic AI & smart patternsAI understands the sentence context, while smart pattern rules instantly catch account numbers, IDs, and contact info — no tedious manual work.
Speed and graphics-acceleration supportThe app uses your device's graphics card power (if available) to speed things up.
Free foreverThe app is available with no sign-up and no quota — just upload your data and go! We use privacy-friendly analytics for site traffic, but never track the contents of your documents.
How it works?
- Load the model in your browser
The sensitive-data detection model is downloaded (usually) once and saved in your browser, so future visits are much faster.
- Automated detection: AI & smart pattern rules
AI understands sentence context (such as names and addresses), while smart pattern rules instantly catch formatted identifiers (like ID numbers, bank accounts, and emails) — no tedious manual redaction.
- Review and save your result
Check the automatically placed masks, adjust them if needed, and download your clean PDF or copy the redacted text. Nothing ever leaves your browser!
Example use cases
Redact your customers' data from support tickets, error logs, reports, and emails before sharing them further.
Mask names, addresses, emails, account numbers (and more) before sending screenshots or text snippets to the internet.
Catch API keys and tokens accidentally embedded in documentation, code, README files, or chat threads.
Frequently asked questions
Is my data uploaded to any server?+−
No. Everything runs entirely in your browser. After the detection model is downloaded the first time, your PDFs, text and images NEVER leave your device. You can verify this by disconnecting from the internet after the model has loaded — the app will still work correctly!
Do I have to manually search for and black out sensitive data?+−
No! That is the primary advantage of Pragma Redact. The application automatically scans your document, identifies sensitive data using AI and smart pattern rules, and places redaction masks immediately. You just review the result or download the completed, anonymized document in one click.
What can I anonymize, and what data is detected?+−
You can anonymize PDFs, plain text, and images. The process is completely automated — AI detects context-dependent information like names and addresses, while smart pattern rules pinpoint ID numbers, bank accounts, emails, phone numbers, and other identifiers. You can also define your own custom rules and adjust masks manually whenever you wish.
Which browsers are supported?+−
Practically all modern web browsers are supported. Note that the app works best / fastest on devices that have so-called graphics acceleration (dedicated graphics cards). Warning: the app may not work correctly on older mobile devices (phones, tablets) due to limited RAM and / or a weak processor (CPU).
Why is the first app launch (and model loading) slow?+−
The first app launch downloads and starts a dedicated detection model from the internet. After that it's saved in the browser's local storage, so later visits to the app are noticeably faster.
Is the Pragma Redact tool free?+−
Yes! The Pragma Redact tool is completely free, with no sign-up and no quota. It runs 100% locally in your browser and is a reasonable alternative to many similar, paid solutions. Get in touch with us if you have specific anonymization needs or want to run the tool in your own infrastructure.