Powered by Smartsupp
Confidential files stay offline. New here? Try the online demo first—no install.

Offline PII Removal & Bulk PDF Redaction. 100% Offline.

Solo attorneys, paralegals, and small business owners use PII Blackout for offline PII removalautomatically find and permanently black out SSNs, client names, bank accounts, and credit card numbers across entire PDF folders, without uploading a single file to the cloud.

Not ready for a 1.2GB download? Try the free online demo on a sample PDF first—then upgrade to the full offline app for batch jobs and client files. Step-by-step guides live in our PDF redaction guide hub.

Browser preview has page limits. Full redaction runs locally on your PC—desktop files are not uploaded for processing.

Windows & macOS · Free trialGet it on Microsoft Store
  • Desktop files never uploaded for processing
  • Microsoft Presidio
  • GLiNER
  • 70+ PII types detected
  • Batch folder processing
  • Listed on Microsoft Store

Watch batch analyze, highlight review, and permanent blackout—all on your desktop, no cloud upload.

See permanent redaction—not a removable overlay

Compare an original legal PDF with the same page after permanent blackout. Every desktop job can also export a page-by-page TXT redaction report so you can audit what was removed.

Before
Original PDF page with visible names, dates, and company identifiers
After
Same PDF page after permanent redaction with sensitive fields blacked out

Sample from a public SEC filing

PII Blackout desktop app highlighting detected sensitive text in a PDF before redaction

Review highlights before you apply

After Step1 Analyze & Preview, every auto-detected match is highlighted in the PDF. Keep, remove, or draw additional redaction boxes—nothing is blacked out until you confirm.

PII Blackout — Redaction Report
File: client_statement.pdf
Date: 2026-03-15

Page 1:
  • US_SSN: ***-**-6789
  • PERSON: J*** S****

Page 2:
  • BANK_ACCOUNT: ****4521
  • PHONE_NUMBER: (***) ***-7890

Page 3:
  • CUSTOM_KEYWORD: Project Atlas

TXT report for every job

Alongside the redacted PDF, a plain-text report lists every term removed on each page, grouped by entity type—so you can verify results before sharing with counsel or clients.

Built for high-volume offline PII removal

70+
PII types auto-detected

SSNs, names, bank accounts, emails, and custom case keywords

0
cloud uploads

Redaction runs locally—ideal for attorney-client confidentiality

Batch
folder processing

Redact hundreds of PDFs with one set of rules, not one file at a time

How offline PDF redaction works

Built on Microsoft Presidio and the GLiNER PII model—enterprise-grade detection with a human review step before anything is permanently removed.

Two-stage PII detection: regex rules plus AI refinement

Detection runs in two stages for accuracy: PII regex and pattern rules scan every page first, then a dedicated PII language model refines the results—catching edge cases rules miss and filtering false positives. You can also enter custom keywords to search, review, and mark terms specific to your case or organization.

Review highlighted matches before applying redaction

After analysis, every match is highlighted directly in the PDF so you can audit before redaction. Add or remove regions with your mouse until the preview looks right—nothing is blacked out until you confirm.

Permanent pixel-level blackout at 400 DPI

When you apply redaction, each affected page is rendered as a high-resolution image (400 DPI by default) and selected areas are filled with solid black at the pixel level. Sensitive text is erased from the underlying image—not covered with a removable overlay—so copy-paste cannot recover what was removed.

Redacted PDF plus a page-by-page TXT report

You receive two outputs: a redacted PDF and a plain-text report listing every term removed on each page, grouped by entity type, so you can verify results at a glance.

100% local processing—models ship in your models folder

The entire application runs locally. AI models ship in the on-disk models folder—disconnect from the internet and keep working. Network access is only needed briefly to sign in and to verify your subscription when you launch the app; your documents never leave your machine.

Batch PDF redaction for statements, résumés, and legal exhibits

Batch processing lets you run multiple PDFs at once—bank statements, résumés, litigation exhibits, HR records, and discovery productions—without opening each file manually in Adobe.

Try online first. Finish confidential jobs offline.

The online demo lowers the barrier—see redaction work in your browser. The desktop app is the full product for client files, batch folders, and air-gapped workflows.

Online demoDesktop app Main product
Best forQuick preview, first-time visitorsConfidential files, daily redaction work
SetupBrowser only—no installDownload ~1.2GB, install on Windows or Mac
Where files are processedCloud (page and size limits apply)100% on your computer—desktop files not uploaded
Batch folder processingSingle-file previewDrop entire folders—one ruleset for every PDF
Scanned PDF OCRLimitedFull OCR support for image-based PDFs
TXT redaction reportBasic online reportFull page-by-page audit report on every job
Offline after sign-inRequires internetDisconnect and keep redacting locally

Built for law firms and small businesses that redact daily

Whether you are a solo attorney preparing a court filing or a bookkeeper scrubbing client financials, PII Blackout replaces slow manual redaction with repeatable automated workflows.

For law firms & legal teams

  • Redact discovery productions before sharing with opposing counsel
  • Scrub client PII from court filings and public records responses
  • Black out account numbers on financial exhibits and depositions
  • Remove metadata before distributing redacted transcripts
Legal eDiscovery workflow →Medical records (HIPAA) →

For small business owners

  • Redact bank statements before sending to accountants or auditors
  • Scrub employee SSNs from HR records and payroll documents
  • Black out customer PII from contracts before third-party review
  • Clean metadata from PDFs before email or portal uploads

Why law firms and small businesses choose offline redaction

Generic cloud PDF tools send documents to third-party servers. PII Blackout keeps desktop redaction on your machine—so client confidentiality and batch scale are not traded for convenience.

Protect Client Confidentiality

Ethics rules and state bar guidance make cloud uploads risky for privileged documents. PII Blackout processes everything on your local machine—no servers, no document storage, no third-party AI reading your files. See our privacy policy.

Batch PDF Redaction at Scale

Drop an entire discovery folder or client file set. Apply the same redaction rules across every PDF, export clean copies, and move on—what used to take a paralegal all day now takes minutes.

Replace Manual Adobe Redaction

Drawing black boxes page by page in Acrobat is slow and easy to miss. PII Blackout auto-detects PII across every file, lets you review before applying, and renders redacted pages to reduce metadata and recovery risk—not just a visual overlay.

70+ PII types for US legal and business workflows

From SSNs and bank routing numbers to custom case keywords—build repeatable rules once, then run batch PDF redaction across every file in the folder.

Personal
Person names, age, gender, date of birth, nationality, religion
Contact & Location
Email address, phone number, street address, city, state/province, country, postal/ZIP code, general location
IDs
United States Social Security number (SSN), passport number, United States driver’s license number, tax ID number, United States ITIN, license plate number, vehicle identification number (VIN)
Finance
Credit card number, bank account number, bank routing number, International Bank Account Number (IBAN), SWIFT/BIC code, currency, monetary amount
Digital
Internet Protocol (IP) address, Media Access Control (MAC) address, website address (URL), username, password, application programming interface (API) key, digital signature, cryptocurrency
Work
Organization, honorific title, job title
Healthcare (PHI)
Hospital, medical condition, medication, medical license number
Time & Custom keywords
Date and time, plus user-defined keywords (names, project codenames, phrases) for exact-match redaction
View full supported entity list
People & demographics
  • Person name
  • Age
  • Gender
  • Date of birth
  • Nationality
  • Religion
  • Honorific title (e.g., Mr., Ms., Dr.)
Contact & location
  • Email address
  • Email (general)
  • Phone number
  • Street address
  • City
  • State or province
  • Country
  • Postal code / ZIP code
  • Location (general)
Financial information
  • Bank account number
  • Credit card number
  • Bank routing number (US)
  • International Bank Account Number (IBAN)
  • SWIFT/BIC bank identifier code
  • Currency
  • Monetary amount
Online identifiers & credentials
  • Website address (URL)
  • Internet Protocol (IP) address
  • Media Access Control (MAC) address
  • Username
  • Password
  • Application programming interface (API) key
  • Digital signature
Cryptocurrency
  • Cryptocurrency (generic)
  • Bitcoin address
  • Ethereum address
  • Litecoin address
Work & organizations
  • Organization
  • Job title
Identity documents
  • Identification number (generic)
  • ID card number
  • Passport number
Vehicles
  • License plate number
  • Vehicle identification number (VIN)
  • National registration plate number
  • Vehicle registration number (India)
  • Vehicle registration number (Nigeria)
  • Vehicle registration number (United Kingdom)
Healthcare identifiers (PHI)
  • Hospital
  • Medical condition
  • Medication
  • Medical license number
  • United States National Provider Identifier (NPI)
  • United States Medicare Beneficiary Identifier (MBI)
  • United Kingdom National Health Service (NHS) number
  • Australia Medicare number
Country-specific tax & national IDs
  • Australian Business Number (ABN)
  • Australian Company Number (ACN)
  • Australian Tax File Number (TFN)
  • India Aadhaar number
  • India Goods and Services Tax Identification Number (GSTIN)
  • India Permanent Account Number (PAN)
  • India passport number
  • India voter ID number
  • Nigeria National Identification Number (NIN)
  • Singapore National Registration Identity Card / Foreign Identification Number (NRIC/FIN)
  • United Kingdom National Insurance number (NINO)
  • United Kingdom passport number
  • United Kingdom postcode
  • United States bank account number
  • United States driver’s license number
  • United States Individual Taxpayer Identification Number (ITIN)
  • United States passport number
  • United States Social Security number (SSN)
  • Tax identification number (generic)
Dates & times
  • Date and time

Simple pricing for solo practitioners

No enterprise contracts. Download automated document redaction software and choose a license that fits your caseload or document volume. Online browser redaction has separate monthly limits — see each plan.

Free
Free tier
$0
  • English language support
  • Up to 3 PDFs per day (desktop)
  • Up to 15 pages per document (desktop)
  • Try core offline redaction — no credit card

Need batch processing, OCR, or watermark-free exports?

PDF redaction guides & resources

Step-by-step pages for offline PII removal, bulk redaction, bank statements, scanned PDFs, and blacking out sensitive fields—aligned with how attorneys and business owners actually search.

How to Black Out Information on a PDF

How to black out information on a PDF (and black out info on PDF) safely: true removal vs overlays, free tool options, the Ctrl+A copy test, and step-by-step verification.

Read →
How to Redact a PDF

How to redact a PDF the right way: true removal vs black boxes, offline workflow, verification, metadata scrub, and links to document-specific guides.

Read →
How to Create a Redacted Bank Statement

How to create a redacted statement (bank statement PDF): what lenders accept, fields to remove, why black boxes fail, the Ctrl+A test, and offline tools that permanently remove account numbers.

Read →
How to Redact a PDF for Free

Blackout PDF free download options reviewed honestly: desktop trial vs online tools, Mac Preview Redact, and why free upload sites fail for bank statements—plus the Ctrl+A verification test.

Read →
How to Remove Metadata from PDF

How to remove metadata from PDF files: document properties, XMP, annotations, form fields, attachments, and verification after content redaction.

Read →
Can Blacked Out Text in a PDF Be Recovered?

Can blacked out PDF text be recovered? Yes—if redaction was only an overlay. How copy-paste, pdftotext, and metadata expose "hidden" text and how to fix it.

Read →
How to Black Out Credit Card Statements in PDF

How to black out credit card statements in PDF: card numbers, billing address, merchant names, and payment barcodes. Includes the copy-paste test and offline redaction steps.

Read →
How to Redact Financial Documents

Redact financial documents the right way: document-type checklists for statements, W-2s, payroll, and invoices; why black boxes fail; offline batch workflow; and verification before sharing with lenders or auditors.

Read →
How to Redact a Scanned PDF (OCR Required)

Redact scanned PDFs and image-only documents: detect image vs. text layers, OCR workflow, burn-in redaction for faxes and phone photos, and verification when copy-paste tests fail.

Read →
Offline PII Removal

Remove names, SSNs, and account numbers from PDFs on your desktop—no cloud uploads.

Read →
Bulk PII Redaction

Apply the same rules across folders of bank statements, HR files, or discovery PDFs.

Read →
What Is PII Redaction?

Definition, examples of what PII should be redacted, and best practices for PII detection.

Read →

Built for professionals who cannot upload client files to the cloud

PII Blackout was created because manual Adobe redaction is slow and most online tools require you to upload confidential PDFs. The desktop app combines Microsoft Presidio and GLiNER with a review-first workflow: highlight matches, confirm regions, then apply permanent pixel-level blackout locally.

Operated by SHAO SHUAI. Listed on Microsoft Store. Questions: support@piiblackout.com.

Typical workflows

  • Discovery & court filings

    Run batch redaction across a production folder, review the TXT report page by page, then share redacted PDFs—without uploading privileged files to a website.

  • Bank statements & tax packets

    Scrub account numbers and SSNs from client PDFs before sending to accountants or auditors. Local processing keeps financial records off third-party servers.

  • Résumés & HR records

    Auto-detect names, emails, and phone numbers, deselect false positives, and export clean copies—faster than opening every PDF in Adobe manually.

Illustrative use cases based on common offline redaction workflows—not individual customer testimonials.

FAQ

Common questions from attorneys and business owners about offline automated document redaction.

What is offline PII removal?
Offline PII removal means detecting and permanently removing personal data from PDFs on your own computer—names, SSNs, bank accounts, credit card numbers—without uploading files to a website or cloud service.
Is PII Blackout an online redaction tool?
The main product is downloadable desktop software for Windows and Mac—client files stay on your machine during redaction. We also offer a limited free online demo so you can see results before installing the full offline app.
Can I try PII Blackout before downloading the desktop app?
Yes. Use the free online demo to upload a PDF, review auto-detected highlights, and download a redacted sample—no install required. For confidential files, batch folder jobs, OCR on scanned PDFs, and the full TXT redaction report, download the offline desktop app.
Is the online demo the same as the desktop app?
They share the same PII detection approach, but the online demo runs in your browser with page and file-size limits and cloud processing. The desktop app runs 100% locally after sign-in, supports batch folder processing, scanned PDF OCR, custom keywords at scale, and exports a page-by-page TXT redaction report.
What technology powers PII detection?
PII Blackout uses Microsoft Presidio and the GLiNER PII model in a two-stage pipeline: regex and pattern rules scan first, then a dedicated PII language model refines matches. You can add custom keywords and review every highlight before applying permanent pixel-level blackout.
Is this suitable for solo attorneys and small law firms?
Yes. PII Blackout is built for firms that handle discovery, court filings, and client document sharing without enterprise redaction budgets. Batch folder processing and offline operation help meet confidentiality and ethics requirements.
Does it support bulk and batch PDF redaction?
Yes. Drop an entire folder of PDFs, set detection rules once, and apply consistent redaction across every file—ideal for discovery productions, FOIA responses, bank statements, HR records, and other high-volume offline PII removal workflows.
What types of PII can it detect?
70+ entity types including SSNs, names, emails, phone numbers, bank accounts, credit cards, passport numbers, and custom keywords you define for case-specific terms.
Can I manually draw redaction areas like Adobe?
Yes. After Step1 Analyze & Preview finishes (and before Step2 Apply Redaction), you can manually draw blackout regions with your mouse, then export with both auto and manual redactions.
Can I unselect automatically detected redactions?
Yes. After Step1 Analyze & Preview and before Step2 Apply Redaction, every auto-detected match can be manually kept or deselected, so you stay in full control of what gets redacted.
Does it remove metadata from PDFs?
It supports workflows to help remove metadata from PDF exports so you can reduce accidental leakage.
What does Settings → Output Dpi do?
Output Dpi controls how sharply redacted pages are rendered when you run Step2. Choose 150, 200, 300, 400, or 600 from the menu bar—higher values produce clearer PDFs but larger files and slower processing. 300 is a good default for most jobs.
Will I receive an invoice after purchase?
Yes. After your purchase is completed, an invoice is automatically sent to your email address.
Does the software need internet access to redact files?
Internet is required for account sign-in, but document redaction runs locally on your computer and files are not uploaded to the cloud. After signing in, you can disconnect from the internet and continue processing PDFs offline.
Which operating systems are supported?
Windows and macOS are supported.
How is this different from drawing black boxes in Adobe Acrobat?
Manual black boxes in Acrobat are slow and easy to miss. PII Blackout auto-detects PII across every page and file, lets you review before applying, and renders redacted pages to reduce metadata and recovery risk—not just a visual overlay.
What is the safest way to black out text in a PDF?
Use automated document redaction software that permanently removes underlying content, verify output before sharing, and scrub metadata from the exported file.

Stop redacting PDFs one page at a time

Try the online demo to see results in minutes—or download PII Blackout for offline batch redaction with client files that never leave your computer.