PDF Info Inspector
Inspect PDF metadata, page count, page sizes and orientation
About this tool
PDF Info Inspector reads a PDF locally and produces a detailed report covering file size, page count, document metadata (title, author, subject, creator, producer), portrait/landscape page summary and per-page dimensions in both PDF points and millimeters. Useful when preparing files for printing (paper-size sanity check), validating output from automated pipelines, or troubleshooting mismatched page orientations before further processing. The first 10 page dimensions are listed in a table view, and the full report can be exported as JSON for downstream automation. All analysis happens in your browser using pdf-lib; the file never leaves your device. Maximum file size is 50 MB.
Frequently Asked Questions
Is my PDF uploaded anywhere?
No. The PDF is parsed entirely in your browser using pdf-lib. No file or metadata leaves your device.
Why are dimensions shown in both pt and mm?
PDF stores page sizes in points (1 pt = 1/72 inch). We add millimeter conversion for printing workflows that work in physical units.
Can I export the analysis result?
Yes. Click Export JSON report to download a structured JSON containing metadata, page count, orientation summary and all page dimensions.
Why only the first 10 pages are shown in the table?
The on-screen table is capped at 10 rows for readability. The exported JSON includes every page.
Does this work on password-protected PDFs?
Generally no. pdf-lib can open many lightly-protected files but reliable inspection requires removing the password first.
What is the file size limit?
50 MB. The limit is set client-side and depends on browser memory.
When is this most useful?
Pre-print page-size sanity checks, troubleshooting mixed-orientation scans, validating automated PDF generation output.
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