Arlington PDF Model Inspector
Browse and validate internal PDF document dictionary hierarchies against machine-readable Arlington Specification schemas offline.
How Arlington Inspector Works
Browse and validate PDF document structure hierarchies against Arlington specifications in 3 steps.
Load PDF File
Drag and drop your PDF file. The document is opened locally using secure in-browser memory buffers.
Traverse Objects Tree
Browse the generated directory tree showing the Document Catalog (Root), Info, and Pages directories.
Audit Spec Conformity
Inspect key-value objects in real-time. Any constraint warnings are immediately flagged with warning badges.
Analyze Dictionaries & Object Constraints
Arlington PDF Model is a specification project establishing grammar rules for PDF objects. This tool audits structural tags, trailer fields, date formats, and layout boundaries.
Comprehensive Schema Check
Compares dictionaries against the formal Arlington model constraints for data classes and formats.
Deep Hierarchical Navigation
Expand and collapse document directories to trace object reference IDs and cross-reference maps.
100% Offline Integrity
Your files are parsed and validation constraints are verified completely within your local browser sandbox.
Frequently Asked Questions
Got questions about Arlington PDF Model Inspector? We have compiled the answers for you.
Q.What is the Arlington PDF Model?
The Arlington PDF Model is an open-source, machine-readable specification of the entire PDF file format. It defines all objects, keys, and values allowed in PDF files, along with constraints, types, and links between objects to help developers validate structural compliance.
Q.Why does my PDF trigger Arlington Spec warnings?
Common warnings include metadata dates missing the required prefix (e.g. D: format), Catalog roots missing `/Type /Catalog` definitions, or boundary arrays like `/MediaBox` defined with invalid structures. These issues can cause rendering errors in standard PDF readers.
Q.Are my files processed on external servers?
No. Just like all other CanvaTools utilities, the Arlington PDF Model Inspector works 100% client-side. The file is read, traversed, and audited locally using Javascript memory buffers, ensuring absolute privacy.
Q.Which version of the PDF specifications are validated?
The inspector validates constraints matching the latest machine-readable Arlington schema definitions, covering document structures ranging from standard ISO 32000-1 up to modern PDF 2.0 specifications.