Built for PDF developers and security researchers, our Hex Viewer allows you to look 'under the hood' of a PDF document. By mapping the ArrayBuffer of your file to a formatted grid, you can inspect the PDF magic number, version headers, and internal object streams. This tool is essential for identifying file corruption, hidden metadata, or structural anomalies without installing a desktop hex viewer.
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Advanced PDF Hex Inspector
Inspect raw binary data, headers, and indirect objects of any PDF file. Secure, browser-only hex editor for developers and researchers.
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About Advanced PDF Hex Inspector
1
Select PDF
Select the document you wish to inspect locally.
2
Generate Dump
Our engine creates a virtual hex dump in milliseconds.
3
Audit Code
Scroll through the hexadecimal and ASCII streams to find specific object data.
Key Features
Formatted Byte Grid
View 16-byte offsets with corresponding ASCII decoding side-by-side.
Header Inspection
Instantly find the %PDF- header to verify file integrity.
Sandbox Security
Perform forensic analysis on untrusted files safely within your browser's restricted memory.
Frequently Asked Questions
This version is a Viewer only to ensure document integrity. Use our 'Fix Corrupt Header' tool if you need to modify the binary stream.
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Instantly repair broken %PDF- headers and recover corrupted PDF binaries.
Convert PDF Version
Safely overwrite the PDF version specification header (e.g. down to 1.3 or 1.4).
PDF to JSON Spatial Mapping
Extract raw text streams with precise X,Y coordinates and dimensions as a JSON.
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