How it works
The PDF Page Info tool extracts and displays metadata and geometric properties from every page of a PDF document — page count, PDF format version, document metadata fields (title, author, subject), and per-page dimensions in points with orientation classification. Use it to audit a batch of PDFs for size consistency, verify that a print-ready file uses the correct page dimensions, or diagnose why a PDF renders oddly in a viewer.
What is reported:
**Document metadata:** - PDF version (e.g., 1.4, 1.7, 2.0) — earlier versions have limited feature support - Title, Author, Subject — the document property fields set by the authoring application
**Per-page dimensions:** - Width and height in PDF points (1 pt = 1/72 inch) - Orientation classification: Portrait (height > width) or Landscape
Common page size reference: - A4: 595 × 842 pt (210 × 297 mm) - US Letter: 612 × 792 pt (8.5 × 11 in) - US Legal: 612 × 1008 pt (8.5 × 14 in) - A3: 842 × 1191 pt (297 × 420 mm)
Mixed page sizes: some PDFs contain pages of different sizes (cover page at Letter, body at A4, appendix pages at Legal). The per-page table reveals these inconsistencies, which can cause unexpected behavior in print dialogs and binding workflows.
Diagnosing wrong-size rendering: if a PDF displays at an unexpected scale in a viewer, the MediaBox dimensions here confirm whether the page coordinates match the expected format. A 612 × 792 Letter document that appears oversized may have been created with incorrect DPI settings.
Privacy: all metadata extraction uses PDF.js in the browser. No document content is uploaded.
Frequently Asked Questions
- The PDF version number (1.0 through 2.0) indicates which version of the PDF specification the file was created to. Higher versions support more features: 1.4 added transparency, 1.5 added cross-reference streams and JBIG2 compression, 1.7 (ISO 32000-1) standardized digital signatures and 3D content, 2.0 (ISO 32000-2) added new encryption and compression options. Most PDFs in the wild are version 1.4–1.7. Version number alone does not guarantee feature compatibility — the creating application determines which features are actually used.
- PDF dimensions are in points (1/72 inch). A US Letter page is 612×792 pt. If the page appears rotated in a viewer, its physical dimensions may show width > height (Landscape) while the content is displayed rotated — the MediaBox size reflects the raw page rectangle before rotation. Some PDFs store page rotation as a separate Rotate entry. This tool reports the raw MediaBox dimensions without applying the Rotate value, which may differ from what you see in a viewer.
- The document was exported or created without metadata fields being set. Many PDF generators leave these fields blank: browser Print → PDF, some LaTeX configurations, many image-to-PDF converters. Blank metadata affects document management systems that index by these fields and reduces SEO value if the PDF is indexed by search engines. To add or edit metadata, use the PDF Metadata Editor tool.
- The tool classifies orientation as Portrait when height > width, and Landscape when width > height, based on the raw MediaBox dimensions. This matches the standard geometric definition. Note that a PDF viewer may display a page rotated (e.g., a scanned Landscape document stored as Portrait with a 90° rotation flag) — this tool reports the geometric MediaBox dimensions, not the viewer-rotation-adjusted display orientation.