signalHacker News Show HN2026-10-05
Show HN: Redactpdf.ai: Open-source AI-based PDF redaction tool
Redactpdf.ai is a free, open-source tool that uses Google Gemini 3.8 Flash to detect sensitive details in PDFs. Users review suggestions, adjust them, and download a redacted PDF where text is removed, not just covered. Files are auto-deleted within an hour, and the code is public on GitHub.
- for who
- People who need to share documents or applications without leaking personal details
- why now
- New Gemini API and recent government redaction failures make this open-source tool timely.
- what changes
- They can be sure that redactions are permanent because the text layer is removed, not just covered
- to do
- Use Redactpdf.ai to redact sensitive PDFs now
key points
- Detects names, emails, addresses, Social Security numbers, phone numbers, and financial data
- Uses Google Gemini 3.8 Flash to scan page images and suggest redactions
- Removes text from PDF instead of drawing black boxes, preventing copy-paste leaks
#pdf redaction#open-source ai tool#ai security#gemini api
score
score 8 out of 10. 0-10: how dense the facts are, multiplied by how much you can do with them after reading. 8+ means the topic's evidence bar is met: benchmarks and availability for a new model, amount and investors for a funding round, revenue figures for a solo-money story. Below 5 an item does not enter the digest. A press release scores 3 or less, a reprint loses 2, anything older than 14 days loses 1, a headline that misleads loses 3.
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