Sanitize PDF
Sanitize PDF files by neutralizing executable JavaScript, automated launch actions, tracking streams, and embedded attachments.
Hidden XML metadata, author names, creation software history, embedded thumbnails, and invisible annotation objects are deleted directly in local browser memory.
The FileTools PDF Sanitizer is a dedicated security hardening utility designed to neutralize active code and risky structural components from PDF documents directly in your browser. It scans and strips executable JavaScript scripts, automatic launch actions (OpenAction), event triggers (/AA), embedded file payloads, and tracking hooks before files enter secure enterprise networks. Only need to strip author names and creation timestamps for privacy without altering document structure or forms? Use our focused PDF Metadata Remover (/pdf-metadata-remover) instead.
Key Challenges Solved
- ✓ Fear of malware or active scripts in untrusted pdfs.
- ✓ Need to clean sensitive metadata and attachments before sharing.
- ✓ Cannot upload confidential documents to external servers.
Who Is Sanitize PDF Built For?
Cybersecurity professionals and compliance officers
Legal and corporate teams sharing sensitive disclosures
Privacy-conscious users defanging inbound attachments
Active Script & Metadata Sanitization: Neutralizing Hidden Document Threats
Stripping JavaScript actions, embedded attachments, and tracking tags
What We Verified
- ✓ JavaScript action neutralization: Purges /OpenAction, /AA (Additional Actions), and embedded JS streams that could trigger malicious code in PDF viewers.
- ✓ Attachment removal: Strips hidden file payloads embedded in the /EmbeddedFiles and /Names dictionaries.
- ✓ Metadata cleansing: Wipes /Info and XMP metadata trees, removing internal workstation names and editing history.
- ✓ Preserves visual layout: Document pages, text fonts, and graphics remain intact while background attack vectors are eliminated.
Why This Happens (Technical Architecture)
PDF files are not static images; they can execute embedded JavaScript and host arbitrary binary attachments inside catalog dictionaries. When sharing documents publicly or complying with secure submission rules, sanitization strips these dynamic vectors. FileTools inspects and cleans the PDF document catalog, guaranteeing a inert document without cloud uploads.
Key Features & Benefits
Active Content Removal
Neutralizes executable JavaScript, OpenAction triggers, and interactive event hooks.
Embedded Attachment Cleansing
Strips embedded file payloads (/EmbeddedFiles, /AF) that can deliver malicious payloads.
Deep Metadata Scrubbing
Purges author names, software signatures, creation dates, and unindexed XMP metadata streams.
Granular Sanitization Controls
Choose exactly which elements to remove while preserving form fields and annotations when desired.
How to Use Sanitize PDF
- Select or drag and drop your PDF file into the PDF Sanitizer.
- Review detected active elements, metadata dictionaries, and attachments.
- Select your desired sanitization options and click "Sanitize PDF".
- Download your cleansed, safe PDF along with an itemized security report.
Common Use Cases
Red-Team / Security Compliance
Cleanse outbound documents submitted to courts, government portals, or public repositories.
Malicious Attachment Neutralization
Defang suspicious PDF files by neutralizing launch actions and embedded script routines.
Whistleblower & Privacy Protection
Eradicate device identifiers, author usernames, and revision histories before public disclosure.
Continue Your Workflow
Recommended logical next steps after using Sanitize PDF:
PDF Metadata Inspector
Inspect document properties, creation dates, embedded JavaScript actions, attachments, and catalog structure directly in your browser.
Use PDF Metadata Inspector →PDF to PDF/A
Prepare and convert PDF documents for long-term archiving with ISO 19005-2 PDF/A-2b compliance metadata and color profiles.
Use PDF to PDF/A →Password Protect PDF
Add passwords and lock editing, copying, and printing permissions on PDF files with standard 128-bit encryption.
Use Password Protect PDF →You May Need This Before
Common preparation and prerequisite steps before Sanitize PDF:
Flatten PDF
Flatten interactive PDF form fields into permanent page content to lock form values and ensure universal reader compatibility.
← Prerequisite: Flatten PDFPDF Repair
Diagnose and recover damaged, corrupted, truncated, or unreadable PDF documents directly in your browser.
← Prerequisite: PDF RepairPDF Metadata Inspector
Inspect document properties, creation dates, embedded JavaScript actions, attachments, and catalog structure directly in your browser.
← Prerequisite: PDF Metadata InspectorRecommended Workflows Featuring Sanitize PDF
Connected step-by-step processing routines for complete document tasks:
Redact & Sanitize Public Legal Filings
Permanently destroy confidential account numbers, purge hidden XMP metadata dictionaries, and sanitize embedded scripts.
Client-Side PDF Dictionary Neutralization
Sanitization operates directly on the PDF indirect object graph using pdf-lib. The catalog dictionary is queried for /Names, /JavaScript, /OpenAction, /AA, and /AcroForm entries. Targeted keys are purged at the dictionary level, indirect object streams are dereferenced, and a rebuilt, unpolluted PDF byte stream is generated.
Cleansing a Corporate Briefing Before Public Release
A company needs to distribute a whitepaper without leaking internal author IDs, revision dates, or draft annotations.
The PDF Sanitizer strips the /Info dictionary, dereferences /EmbeddedFiles, and clears metadata streams within 500ms.
Important Operational Notes & Realistic Limitations
- Visual text content containing printed phone numbers or visible names cannot be removed automatically; use a redaction tool for visual redactions.
- Encrypted password-protected PDFs must be decrypted before dictionary sanitization.
- If your goal is solely to remove author identities and creation dates without altering embedded scripts or active features, use PDF Metadata Remover.
Online PDF Tools Without Uploading Files: Private In-Browser Guide
Discover how client-side WebAssembly and PDF.js process sensitive documents directly in your browser with zero server uploads and total privacy.
Frequently Asked Questions
How do I sanitize a PDF that contains JavaScript?
Sanitize PDF cleans and hardens documents in your browser: remove JavaScript from PDF files, block launch actions and tracking streams, and clean PDF malicious streams with the pdf sanitizer without upload. If you only need author and date fields gone, use PDF Metadata Remover.
How is Sanitize PDF different from PDF Metadata Remover?
Sanitize PDF is built for security hardening—it neutralizes active risks such as embedded JavaScript, launch actions, tracking streams, and suspicious file attachments. PDF Metadata Remover is a lightweight privacy tool that strips author names, software signatures, and timestamps while leaving active elements, form fields, and interactive links intact.
What is PDF sanitization?
PDF sanitization is the process of inspecting and removing active code, scripts, automated actions, embedded payloads, and hidden metadata that could pose security or privacy risks.
Does sanitizing a PDF affect visible text or layout?
No. Visual layout, page fonts, and graphics are preserved intact. Only active code, embedded files, and metadata are pruned.
Can this tool remove PDF malware or exploits?
Yes. Most PDF exploits rely on JavaScript execution, OpenAction auto-execution, or malformed embedded streams. Stripping these dictionaries neutralizes common PDF attack vectors.
How is this different from Remove PDF Metadata?
Remove Metadata only strips author and date fields. The PDF Sanitizer performs deep structural surgery: stripping JavaScript, launch actions, URI actions, embedded attachments, and tracking streams.
Are my confidential documents private?
Yes. Processing is 100% client-side via WebAssembly and JavaScript. Zero bytes are uploaded to any server.