PDF Structure Analyzer
Analyze low-level physical layout revisions, Fast Web View (linearization) hint structures, logical bookmarks outlines, resources catalog profiles, and Tagged PDF accessibility trees offline.
How The Structure Analyzer Works
Inspect physical revisions and logical outlines locally in 3 steps.
Load PDF Stream
Select your file to read its binary streams and markers locally in memory.
Map Revisions & Tags
The tool scans EOF markers for save history, traverses logical tags, and builds outlining trees.
Audit Pages Footprint
Examine resource counts (fonts, XObjects, annotations) and download the full structured report.
Incremental revisions & outlines inspection
Analyze low-level layouts, tag indices, and referenced page resource maps dynamically.
Timeline Revisions Audits
Identify incremental modification timeline offsets and payloads saved to the PDF file.
Private Off-Network Analyzer
Parsing runs locally inside your sandboxed web browser, ensuring document bytes never leak.
Accessibility Tags Profiler
Explore headings, lists, table elements, and page content references layout diagrams.
Frequently Asked Questions
Common questions about local physical & logical PDF audits.
Q.What is a PDF physical layout revision?
When you save modifications in some editors, new elements are appended incrementally after the EOF marker. The analyzer parses these bytes offsets to identify save versions.
Q.Does the structure tree check accessibility compliance?
Yes. It validates accessibility tagging compliance by searching for logical structure tags like headings (H1, H2), list groups (L, LI), and table structures.
Q.Are files parsed on your server?
No. The document bytes are loaded, scanned, and mapped completely inside your web browser sandbox. No networks are used for processing, ensuring complete privacy.
Q.What does the page resources map analyze?
It maps font metrics counts, image XObjects name identifiers, content stream byte lengths, and interactive annotations categories for detailed footprints auditing.