Documentation

Knowledge Hub

Maximize your efficiency with DocInspector — powerful desktop batch processing and free browser-based document tools.

1. PDF & Document Operations

Core utilities for editing, securing, and transforming documents.

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Sanitize PDF Metadata

Recursively scans your entire folder structure to strip hidden XMP/RDF properties, GPS geotags, authors, and revision histories. Supports batch execution alongside other tools, processing files one by one and preserving the original nesting structure. Failed files are isolated in the 'error' folder.

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Add Watermark to PDF

Embeds permanent diagonal text watermarks directly into the PDF content stream to prevent unauthorized redistribution. Processes multi-level directory trees in batch while keeping folder structures intact. Runs sequentially after other active operations. Failed items are isolated in the 'error' directory.

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Encrypt PDF with AES-256

Protects sensitive documents using secure military-grade AES-256 bit encryption. Define granular permissions for printing, editing, and text copying. Executes as the final stage of the batch processing pipeline, running concurrently after other operations have finalized. Keeps folder structure intact; error files go to the 'error' folder.

Redact Sensitive Text

Permanently erases private keywords, personal information, or specific names from the text and OCR layers of the PDF, flattening the document to make it irreversible. Can be chained in batch with pre-conversions or watermarking, executing sequentially. Original folder structures are preserved; failed items are isolated in 'error'.

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Flatten PDF Forms & Layers

Converts interactive form fields, checkboxes, digital signatures, and layered annotations into static, non-editable background content. Protects submissions from tampering. Executes sequentially alongside metadata sanitization or other active batch operations. Preserves nested folder trees; invalid files go to the 'error' folder.

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Repair & Rebuild PDF

Reconstructs corrupted, broken, or unopenable PDFs from their raw binary structure, recovering cross-references and page trees. Includes integrated Smart OCR to handle scanned pages automatically. Runs sequentially as the initial recovery step in the batch pipeline. Preserves folder tree; unrecoverable items go to 'error'.

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Remove Digital Signatures

Strips cryptographic signature objects and certificate-based restrictions from PDFs to allow merging or editing. The visual layout remains completely untouched. Runs concurrently as part of the batch pipeline, executing before redaction or sanitization. Preserves folder hierarchy; errors are logged and isolated in 'error'.

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Convert Any Format to PDF

Transforms Word documents, Excel spreadsheets, PowerPoint presentations, and images into clean, standard PDFs. Excel files get automatic Fit-to-Page scaling. Can be chained in batch with active operations (like watermarking) that execute sequentially on the resulting PDFs. Keeps folder structure; failed jobs go to 'error'.

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OCR Text Extraction

Applies high-accuracy Tesseract OCR to scan image files and image-only PDFs, making all embedded text searchable and copyable. Supports English, Romanian, and Russian. Can be executed in batch, processing multiple files one after another, maintaining the original directory tree. Unreadable items are isolated in 'error'.

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Secure File Shredder

Permanently wipes files from your local hard drive using the military DoD 5220.22-M multi-pass overwrite standard, making recovery mathematically impossible. Fully offline desktop operation ensuring total data privacy. Runs locally on your workstation; no network calls or remote servers are involved.

2. Reports & Summaries

Generate court-ready inventory reports and audit trails.

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PDF Bundle Summary

Generates a clean, printable PDF cover sheet listing every PDF in a directory tree — documenting file names, page counts, sizes, and timestamps. Essential for legal submissions, audits, and case indexing. Runs offline on your desktop workstation, protecting sensitive file records from cloud exposure.

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Advanced Borderou Report

Creates a detailed forensic Excel spreadsheet inventory of your document collections, generating cryptographic MD5 hashes for every file to verify integrity. Scans subdirectories recursively to catalog paths, page counts, authors, and metadata. Operates completely locally inside the secure desktop sandbox.

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Folder Evidence Report

Traverses deep, nested folder hierarchies recursively to build a complete architectural tree directory report of all files (PDF, Word, Excel, images) with exact paths, file sizes, and write times. Ideal for IT compliance audits and litigation discovery. Runs entirely offline on the desktop application.

3. Compliance & Long-Term Archiving

Enterprise-grade standardization for institutional portals.

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PDF/A Archival (ISO 19005)

Converts Office documents, images, and standard PDFs to strictly compliant ISO 19005 PDF/A-2b format. Automatically embeds all fonts, strips dynamic scripts/encryption, and runs Smart OCR on scanned pages. Recursively preserves directory structures in the output ZIP, isolating any failed items in the 'error' folder. Runs sequentially in batch with other options.

Side-by-Side

Feature Comparison

See exactly what each platform offers — choose the right tool for your workflow.

Feature 🌐 Browser / Web Tools 🖥️ Desktop App
General
PriceFree Tier: €0 · Basic: €9.99/mo · Pro: €15/mo3-day Trial: €0 · Basic: €9.99/mo · Pro: €15/mo
Installation RequiredNone — works in any browserWindows Installer (.exe)
Works OfflineNo — requires internetYes ✓ — fully air-gapped capable
License Key RequiredNo for Free Tier · Yes for Basic & ProYes (for activation)
File Processing
PDF Processing✓ Free, Basic & Pro✓ Trial, Basic & Pro
DOCX / Word ProcessingFree, Basic, Pro: Sanitize metadata only✓ Trial, Basic & Pro (sanitize, convert, batch)
XLSX / Excel ProcessingFree, Basic, Pro: Sanitize metadata only✓ Trial, Basic & Pro (sanitize, convert, batch)
Image Processing (JPG, PNG, TIFF)Free, Basic, Pro: Sanitize & convert to PDF✓ Trial, Basic & Pro (sanitize, convert, batch)
Max File SizeFree: 25 MB · Basic/Pro: 100 MB per fileUnlimited (no file size limits)
Max Files per Upload RunFree: Capped by daily limit (100) · Basic: Capped by daily limit (1,000) · Pro: up to 1,300 per runUnlimited (no per-run limits)
Daily Processing LimitFree: 100/day · Basic: 1,000/day · Pro: Unlimited runsUnlimited (no daily limits for Trial, Basic, or Pro)
Multi-Action Pipeline (batch operations)Free & Basic: single action · Pro: multi-actionTrial & Basic: single action · Pro: multi-action pipeline
Core PDF Tools (Browser & Desktop)
Remove Digital Signatures✓ Free, Basic & Pro✓ Trial, Basic & Pro
Sanitize Metadata✓ Free, Basic & Pro✓ Trial, Basic & Pro
Repair & Rebuild PDF (+ built-in OCR)✓ Free, Basic & Pro✓ Trial, Basic & Pro
Add Watermark✓ Free, Basic & Pro✓ Trial, Basic & Pro
Encrypt PDF (AES-256)✓ Free, Basic & Pro✓ Trial, Basic & Pro
Redact Sensitive Text✓ Pro only✓ Trial, Basic & Pro
Flatten to Image-Only PDF✓ Free, Basic & Pro✓ Trial, Basic & Pro
PDF/A Archival Converter✓ Pro only✓ Pro only
Reporting & Evidence
PDF Bundle Summary (Borderou)✓ Free, Basic & Pro✓ Trial, Basic & Pro
Advanced Bundle Report (PDF/Word/Excel)✓ Pro only✓ Trial, Basic & Pro
Folder Evidence Report (full directory tree)— Not available online✓ Trial, Basic & Pro
Format Conversions
Convert format to PDF (Word, Excel, Images)✓ Free, Basic & Pro✓ Trial, Basic & Pro
Advanced — Desktop Only
OCR Standalone (scan entire folders)✓ Free, Basic & Pro (built-in)✓ Trial, Basic & Pro (recursive folder OCR)
Recursive Folder Scan✓ Trial, Basic & Pro
Secure File Deletion (DoD Shredder)✓ Trial, Basic & Pro
FAQ

Frequently Asked Questions

Yes, all browser-based tools are free to use. Free users can process up to 100 files per day. Basic and Pro licenses unlock higher processing limits (up to 1,000 files/day and unlimited files/day respectively).

The browser tools support PDF, DOCX, XLSX, JPG, PNG, and TIFF for metadata sanitization. Watermark, encrypt, redact, flatten, and repair operations currently support PDF. The Bundle Summary and Folder Evidence tools work with any file type. The desktop application supports all these formats plus full batch processing capabilities.

No installation is required. The online tools run using modern web APIs and a secure VPS sandbox backend. Any modern browser (Chrome, Firefox, Edge, Safari) works. For the full desktop application with advanced features like OCR and recursive folder scanning, a Windows installer is available.

Absolutely. The online tools process files in an isolated, secure VPS sandbox, and all files are deleted immediately after download. Your files are never stored or analyzed. The desktop app processes everything locally on your Windows machine with no internet connection required.

Yes. Because both the online tools (which delete files immediately after processing) and the desktop application process files locally or in a temporary isolated environment, there is no permanent data collection or transfer involved. Both approaches are fully GDPR compliant by design.

Document metadata includes hidden information embedded in files — author names, creation dates, GPS coordinates (in images), revision history, software versions, and internal comments. Removing metadata protects privacy, prevents unintended information leakage, and is often required for legal evidence submission and regulatory compliance.

The Advanced Borderou is a detailed inventory report generated as an Excel spreadsheet. It catalogs all files in a selected folder with comprehensive metadata including file names, sizes, types, creation dates, modification dates, SHA-256 hash values, and page counts for documents. It's essential for legal evidence management and compliance auditing.

The Folder Evidence Report is a comprehensive Excel-based audit trail that documents the complete directory structure, file integrity hashes, and metadata for all files in a folder tree. It provides a court-ready snapshot of folder contents and is designed for legal evidence management, chain-of-custody documentation, and compliance requirements.

File format conversions including Word to PDF, Excel to PDF, and Image to PDF are currently in active development for the browser tools and will be available in a future update. In the meantime, these conversion features are already fully available in the desktop application.

Browser Tools are free, require no installation, and handle core operations like sanitize, rebuild & repair, watermark, encrypt, redact, and flatten for individual files. The Desktop App is a licensed Windows application offering advanced features including OCR, batch processing of entire folder trees, recursive scanning, format conversions, secure file deletion (DoD-grade shredder), and full system auditing. See the comparison table above for a detailed breakdown.

Yes. All browser-based tools support batch processing — you can upload up to 100 files simultaneously and apply any operation to all of them in a single run. Free users get 100 files/day; Pro license users have no daily limit.

Yes. DocInspector supports a multi-operation pipeline — you can select several operations (e.g. sanitize metadata + add watermark + encrypt) and apply all of them to your batch of files in a single run, without re-uploading anything.

Yes. Beyond fixing structural corruption, the repair tool applies OCR (Optical Character Recognition) to scanned or image-based PDFs. This converts visual content into real, searchable, selectable, and copiable text — all in one step, without a separate OCR tool.

This happens when a PDF was created from a scan or a photo — the text is an image, not real characters. Use the Repair & Rebuild tool with OCR enabled: it will convert that image-text into real, copiable text without needing any separate software.

Yes, redaction is permanent and forensically sound. The tool finds keywords or regions you specify and replaces them with solid black bars, then flattens the PDF so the hidden content cannot be extracted or recovered. This is suitable for legal, compliance, and court submission use cases.

The Encrypt PDF tool applies AES-256 encryption with a password you set. It supports both user password (required to open the file) and owner password (controls printing, copying, and editing permissions). The encryption is fully compatible with Adobe Acrobat and all standard PDF readers.

Flatten PDF converts all interactive elements (form fields, annotations, signatures) into static content — the visual appearance is preserved but the elements become non-editable. Repair PDF fixes structural corruption in the file itself (broken cross-reference tables, truncated streams) and optionally applies OCR to make text selectable. They solve different problems and can be combined in the pipeline.

The Free plan allows up to 100 files per day with full access to all browser tools. The Basic license raises the limit to 1,000 files/day. The Pro license removes all daily limits (unlimited files/day) and unlocks priority processing. All plans use the same tools with no feature restrictions — only processing volume differs.

Each DocInspector license allows 2 activations: one for the website (any browser) and one for the Desktop App (Windows PC). If you want to switch to a different computer, deactivate the old device first from the license panel, then activate on the new machine.

All document processing is done 100% locally on your machine. An internet connection is only required to verify your license. However, if your internet connection drops, the app features a 24-hour offline bypass, allowing you to continue your work without interruption for a full day. Your files and data never leave your local network.

You have full control over your subscription through our Customer Portal, accessible by clicking "Manage Subscription" on the Pricing or Online Tools pages. In the portal, you can view your active subscriptions, current license keys, and billing history. To add licenses (e.g., for new team members), simply increase the subscription quantity. To move a license, click on your License Key and deactivate an old device to free up a slot. Invoices are generated automatically and emailed to you on your billing date (which starts on the date of your first purchase), and can also be downloaded anytime from the portal. If you upgrade your quantity mid-cycle, you will only be charged a prorated amount for the remaining days of that month or year.