Show JavaScript
Detect and display embedded JavaScript in PDFs
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Scan Settings
See what JavaScript code is hiding in your PDF. iReadPDF's JavaScript viewer extracts and displays all embedded scripts in PDF documents. Essential for security review, debugging PDF forms, and understanding interactive document behavior.
JavaScript in PDFs can be used legitimately for form calculations and interactivity, or maliciously for exploits. Our viewer shows you exactly what scripts exist, helping you assess documents before opening in vulnerable readers.
Why Use Our Show PDF JavaScript Online for Free?
Who Uses This Tool?
Trusted by professionals across industries for their daily document needs
Security Review
Inspect PDFs for malicious scripts. Security audit documents. Verify document safety.
Form Development
Review form calculations. Debug PDF forms. Analyze form logic.
Document Analysis
Understand document behavior. Analyze interactive features. Review automation.
Compliance Check
Check for prohibited scripts. Verify policy compliance. Security policy enforcement.
Learning
Learn PDF JavaScript. Study form implementations. Educational analysis.
Forensics
Analyze suspicious documents. Extract script evidence. Support investigations.
How It Works
Get started in three simple steps
Upload PDF
Upload the PDF you want to analyze for JavaScript.
View Scripts
See all JavaScript code extracted and displayed with syntax highlighting.
Export
Optionally export the JavaScript code for further analysis.
Powerful Features
Everything you need, nothing you don't
Complete Extraction
Find all JavaScript in document, form, and page actions.
Syntax Highlighting
Code displayed with color-coded syntax.
Location Mapping
See where each script is located in the document.
Search
Search within extracted code.
Risk Indicators
Highlight potentially dangerous patterns.
Export
Download extracted scripts for analysis.
Frequently Asked Questions
Quick answers to common questions
Why do PDFs contain JavaScript?
Legitimate uses include form calculations, validation, and interactivity. Unfortunately, it can also be exploited for malware.
Does viewing execute the scripts?
No, we extract and display the code without executing it. Viewing is safe.
How do I know if scripts are malicious?
We highlight suspicious patterns. Look for obfuscation, external connections, or system commands. When in doubt, don't open the PDF in a regular reader.
Can I remove the JavaScript?
Use our sanitize tool to remove all JavaScript from a PDF.
What about password-protected PDFs?
Enter the password when prompted to analyze JavaScript in protected documents.
Is this safe to use on malicious PDFs?
Yes, we only extract and display code without executing it. The analysis is safe.
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