Redact PDF Online Free — Permanently Remove Sensitive Information in Seconds
The only free browser-based PDF redactor that permanently deletes text, images, and metadata — not just covers them. No Adobe. Free account required. GDPR & HIPAA compliant infrastructure ensures your data stays private.
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Supported: PDF
What Is True PDF Redaction?
PDF redaction is the permanent, irreversible removal of sensitive text, images, and metadata. Unlike simply drawing a black box over text — which only hides it visually and can be reversed by anyone — true PDF redaction deletes the underlying data layer entirely.
When you redact with Plainscan, the selected content is stripped from the PDF's internal structure. This is the standard required by GDPR (Article 17), HIPAA Safe Harbor, and FOIA disclosure protocols.
Technical Difference
Fake Redaction (Annotations)
Black boxes cover text, but the text layer remains. Risk: EXTREME.
True Redaction (Plainscan)
Data is purged from object tree and content stream. Risk: ZERO.
How to Redact a PDF Online — 4 Simple Steps
Permanently purge sensitive data from your files in minutes.
Upload PDF
Drag and drop your file into our secure uploader. We support files up to 100MB.
Select Content
Draw selection boxes over text or images. Pro users get AI-powered PII detection.
Apply Redaction
Click "Apply" to rewrite the PDF structure, stripping the data permanently.
Download
Get your sanitized PDF. Files are auto-deleted from our UK servers in 24 hours.
Choose Your Redaction Power
From manual selection to automated AI PII detection.
| Feature | 🆓 Free | ⭐ Pro | 🤖 AI |
|---|---|---|---|
| True Permanent Redaction | ✅ Unlimited | ✅ Unlimited | ✅ Unlimited |
| Manual Selection | ✅ Yes | ✅ Yes | ✅ Yes |
| Metadata & Hidden Layer Scrub | ✅ Yes | ✅ Yes | ✅ Yes |
| Find & Replace Redaction | ❌ No | ✅ Yes | ✅ Yes |
| AI Auto-detect PII (Names, SSNs) | ❌ No | ❌ No | ✅ Yes |
| HIPAA/GDPR Pattern Templates | ❌ No | ❌ No | ✅ Yes |
| Ad-Free Experience | ❌ No | ✅ Yes | ✅ Yes |
| File Size Limit | 25MB | 200MB | 500MB |
Comprehensive Content Redaction
Personal Data (PII)
- Full Names
- SSNs
- Phone Numbers
- Home Addresses
Financial Info
- Account Numbers
- Credit Card PAN
- Salary Figures
- Bank Balances
Medical PHI
- Patient IDs
- Diagnosis Codes
- Insurance Policy
- Treatment History
Legal & Graphics
- Signatures
- Face Photos
- Witness Names
- Confidential Terms
Industry-Specific Compliance Solutions
Legal & Court Filings
Redact witness names, trade secrets, and privileged communications before filing exhibits. Plainscan meets federal and state court standards for permanent data removal.
Healthcare & HIPAA
Permanently remove PHI from medical records for research or billing. Our AI tier auto-detects all 18 HIPAA Safe Harbor identifiers instantly.
Finance & Banking
Securely black out account numbers and compensation details. Compliant with PCI-DSS and SOX standards for data minimisation and privacy.
Plainscan vs. Adobe vs. Competitors
Why professionals trust our structural redaction engine.
| Feature | Plainscan | Adobe Online | iLovePDF |
|---|---|---|---|
| True Permanent Redaction | YES | YES | YES |
| Zero-Persistence Privacy | YES | NO | NO |
| Free Account | YES | NO | NO |
| AI PII Detection | YES | PAID ONLY | NO |
| Metadata Scrubbing | YES | YES | LIMITED |
Frequently Asked Questions
Everything you need to know about professional-grade PDF redaction.
1Is PDF redaction permanent and irreversible?
Yes. When you redact a PDF with Plainscan, the selected content is permanently removed from the document's internal data structure — including the content stream and associated metadata. Unlike drawing a black box (annotation), our redaction physically deletes the data layer.
2How do I redact a PDF for free without Adobe?
Simply upload your document to Plainscan's redactor above. Draw selection boxes over sensitive info, click 'Apply Redaction', and download your sanitized file. Free account required for basic use.
3Does Plainscan remove metadata from the PDF?
Yes. Plainscan scrubs metadata associated with redacted regions, including XMP fields, incremental update history, and hidden text layers. We ensure no residual data remains in the redacted areas.
4Can redacted text be recovered by forensic software?
No. Because our engine rewrites the PDF structure and physically removes the redacted objects, there is no data left for forensic tools to recover. This is the gold standard for legal and government disclosures.
5Is Plainscan HIPAA and GDPR compliant?
Yes. We meet HIPAA Safe Harbor de-identification requirements and GDPR Article 17 standards. All files are encrypted with AES-256 and automatically purged from our UK servers within 24 hours.
6What is the best free PDF redaction tool in 2026?
Plainscan is the best free PDF redaction tool in 2026 for unlimited, true permanent redaction with no daily limits, free account required, no watermarks, metadata scrubbing, GDPR and HIPAA compliance, and 24-hour auto-deletion — all free.
7What file size does Plainscan support for PDF redaction?
Free users with an account can process files up to 50MB. Pro users can redact PDFs up to 200MB, and AI users can process files up to 500MB.
8Can I redact scanned PDFs (image-based PDFs)?
Yes — with Plainscan's AI tier. Scanned PDFs contain images of text rather than selectable text, so standard redaction tools cannot identify the content. Plainscan's AI tier uses OCR (Optical Character Recognition) to convert the image-based text into a readable layer.
9Does Plainscan store my documents after redaction?
No. Your uploaded file is auto-deleted from Plainscan's servers within 24 hours of upload. You can also manually delete your file immediately after downloading your redacted PDF from your session dashboard.
10Can I redact multiple pages at once?
Absolutely. You can scroll through your PDF, mark multiple areas across any number of pages, and apply all redactions in a single click.
11What is the difference between redaction and sanitization?
Redaction removes specific content you select. Sanitization removes all hidden data (metadata, history, comments) from the entire document. Plainscan performs both during the redaction process for maximum security.
12How do I redact SSNs, names, or other PII patterns automatically?
Plainscan's AI tier automatically detects and highlights common PII patterns including Social Security Numbers, full names, email addresses, phone numbers, and dates of birth across every page of your PDF.
13Is it legal to redact court documents, contracts, and medical records?
Yes — in fact, redaction is legally required in many contexts. Federal Rule of Civil Procedure 5.2 requires redaction of SSNs and financial account numbers from federal court filings. HIPAA mandates redaction of PHI before medical records are shared outside of treatment contexts.