Analyze & compare
Analysis tools answer questions about a PDF: Compare PDF finds differences between two documents, PDF/A Compliance Checker and PDF Accessibility Checker audit standards, Broken PDF Diagnosis explains why a file will not open, and PDF Word Count measures the text. All run in your browser.
Analysis is where PDF tools get honest. Instead of promising a result, these tools measure the document: what changed between versions, whether a file meets a standard, why it will not open, and how much text it contains.
Every analyzer runs locally and reports what it actually finds — no fabricated compliance badges or invented diagnostics.
How these tools work together
Comparison
Compare PDF finds differences between two PDFs by comparing page text and structure. PDF Compare Report produces a detailed, shareable comparison document. Before / After Compare shows two PDFs side by side for visual review.
Comparison is text- and structure-based, so it reliably catches content changes — the practical use case for contract and revision review.
Standards and accessibility
PDF/A Compliance Checker reports PDF/A indicators honestly — what the file contains rather than a certificate. PDF Accessibility Checker checks title, language, tags and text layer, which are the practical signals of an accessible PDF.
Both tools are honest about scope: they check what is verifiable from the file structure and say so.
Diagnosis and measurement
Broken PDF Diagnosis examines a file that will not open and explains the likely cause. PDF Word Count counts words, characters and pages. Combined with the Optimize category's PDF Health Check and PDF Validator, you can triage any problem document.
When to use analysis tools
Reviewing a revised contract? Compare PDF. Archiving for the long term? PDF/A Compliance Checker. Preparing a document for broad distribution? PDF Accessibility Checker. A file that will not open? Broken PDF Diagnosis.
Analyze & compare tools
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Frequently asked questions
How does PDF comparison work?
Compare PDF compares page text and structure between two documents and reports what changed. It is text-based, so it reliably catches content differences between revisions.
Are the compliance checks real certifications?
No — they are honest indicator checks. They report what the file structure shows, which is useful for triage but is not a certification from a standards body.
Is my file uploaded for analysis?
No. All analysis runs in your browser. Your documents never leave your device.