PDF page count and document information
Drop a PDF and get everything a printer, a portal or a lawyer might ask you: how many pages, what size each one is in millimetres and inches, which PDF version it uses, whether it is encrypted, whether it carries form fields or signatures, and every metadata field it stores.
How to use the PDF Info
- Drop a PDF.
- Click Inspect PDF.
- Read the document table and the page-size table underneath.
- Download the .txt report if you need to send the details to someone.
Page sizes, four ways
PDF measures everything in points, where one point is exactly 1/72 inch. The table converts each distinct page size into millimetres, inches and pixels at 96 DPI — the CSS reference resolution, so the pixel column tells you how large the page would be in a browser at 100%. Common sizes are named for you: A4 is 595 × 842 points (210 × 297 mm), US Letter is 612 × 792 points (8.5 × 11 in), A3 is 842 × 1191 points. Pages are grouped, so a 300-page document with one oversized foldout shows two rows and tells you exactly which page is the odd one.
Why the page count can surprise you
The number here is the number of sheets in the file, counting covers, blank versos and separator pages. It is often larger than the highest number printed on the pages. Portals that cap submissions at "30 pages" mean this number, so check it here before uploading rather than after a rejection.
The document fields explained
- PDF version — the format level, from 1.4 (Acrobat 5, 2001) to 2.0. Old print workflows occasionally refuse anything above 1.4 or 1.7.
- Encrypted — whether a security handler is present. A file can be encrypted and still open freely; that is the owner-password case explained on our unlock page.
- Linearised — "fast web view". A linearised file can start displaying page 1 before the whole download finishes, which matters for large documents served over the web.
- Form fields — AcroForm is the standard interactive form; XFA is Adobe's XML form technology, which many readers and most browsers cannot fill in. If a government form will not work for you, this row usually explains why.
- Digital signatures — whether signature fields are present. Editing a signed PDF invalidates the signature, so check this before running any other tool on it.
- Creator and Producer — the authoring application and the library that wrote the file. A quick way to tell a scan from an export.
Uses for the report
Print shops want the page count and trim size; self-publishing platforms want both plus the version; grant and tender portals cap the page count and sometimes the file size, which is shown here in the same table. The downloadable .txt copies all of it in a form you can paste into an e-mail.
Reading it costs nothing
Inspection is read-only: no new PDF is written and nothing is uploaded. The document is parsed by PDF.js in your browser, so even a 500 MB archive is examined without a transfer.
Frequently asked questions
How do I count the pages in a PDF without Acrobat?
Drop it here and click Inspect. The page count, along with every page size, appears in a table; nothing is uploaded or installed.
What size are the pages of my PDF?
The page-size table shows each distinct size in points, millimetres, inches and pixels at 96 DPI, and names the standard ones such as A4 or Letter.
Why does it say my form is XFA?
XFA is Adobe’s XML form format. Browsers and most third-party readers cannot fill XFA forms; you need Adobe Acrobat Reader on a desktop.
Does inspecting change the file?
No. Nothing is written and nothing is uploaded — the report is generated from a read-only parse in your browser.
Privacy
This tool runs entirely inside your browser using WebAssembly and the Canvas/File APIs. Your files are never uploaded to ToolFlint or any third party; you can verify this in your browser's network tab or by switching to airplane mode after the page loads. Read how we process files.
Last updated 2026-09-23.