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.
Upload Document
Drag & drop a PDF file here, or click to browse
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.
How Structure Analyzer Works
Our high-performance online utility runs entirely client-side, processing your files securely and instantly inside your web browser. For related functions, you can also use our Linearization and All Tools utilities.
Upload PDF
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Analyze Structure
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
View Layout
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
PDF Analysis Features
Designed for professional results, privacy, and maximum compatibility across all modern desktop and mobile browsers:
Physical Revisions
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Logical Outlines
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Fast Web View
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Accessibility Tree
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Frequently Asked Questions About PDF Structure
Is this structure analyzer free?
Yes. Analyze unlimited PDF structures with no registration.
Which structural elements are analyzed?
Physical layout revisions, linearization tables, logical outlines, and accessibility trees.
Does it check Web View?
Yes. Fast Web View linearization analysis for progressive loading optimization offline.
Do you store PDFs here?
No. All analysis happens locally with complete privacy.