Privacy-Safe Document Prep for AI: Keep Sensitive Files Local
How to prepare confidential documents for AI tools while minimizing exposure: local processing, redaction, and sending only what is needed.
Minimize what leaves your device
Every upload is another copy of your data somewhere. Extracting text locally with PDF to Clean Text or the Batch Document Extractor means the only thing you share with an AI is the text you choose.
Redact and trim
Replace sensitive values with placeholders like [CLIENT] or [ACCOUNT]. Then cut to the sections that matter; the Context Compressor helps reduce long documents to their essentials.
- Use consistent placeholders so the AI can still reason
- Remove signatures and contact blocks
- Check your provider's data retention settings
Follow your policy
Local preparation reduces exposure but does not replace your organization's rules on which AI services are approved. When in doubt, ask before sharing.
Try it free in your browser
- PDF to Clean Text — Strips headers, footers, page numbers, and hyphenation. Outputs TXT or Markdown.
- Context Compressor — Reduce token usage with compression strategies tuned for LLMs.
- Batch Document Extractor — Drop PDFs, images, Word docs, and text files together. Get clean text out — combined or zipped one-per-file. Browser-side OCR included.
Tools mentioned
Frequently asked
Do AI Input Lab tools upload my files?
No. Processing runs in your browser, so files stay on your device.
What should I redact?
Names, account numbers, addresses, health details, and anything covered by your company's data policy.
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