Free · No sign-up · Runs in your browser

Count the pages in your PDFs.

Drop in a single PDF or a whole folder and get every page count, the total, the paper size and how many sheets it takes to print. Handy for print quotes, translation and typing jobs, court bundles and billing.

Not uploaded — nobody sees it Hundreds of files at once Total and print sheets Export to CSV

Drop your PDFs here, or click to browse One PDF or hundreds · counted on your device

Your PDFs are never uploaded — they’re opened right here in this browser tab, on your device. They never reach a server, so we never see them, copy them or keep them.

At a glance

PDF page counter: quick facts

Count the pages in one PDF or hundreds at once.

Updated 8 October 2026

Price: Free. No sign-up, no watermark.
Shows: Pages per file, a total, page sizes (A4, Letter, landscape) and sheets needed to print.
Accuracy: Exact, scans included, as it reads the PDF’s own page list.
Export: Download the list as a CSV.
Protected PDFs: Usually counted anyway, marked "(protected)".
Privacy: Your PDFs are read in your browser and never uploaded.

How it works

How to count pages in a PDF

A PDF keeps a list of its pages inside the file. Altto opens each PDF on your device, reads that list and the size of each page, and adds everything up. Nothing has to be rendered, so even big batches are quick.

Add your PDFs

Pick one file or select many at once. Folders of hundreds are fine.

Press Count

Each file is opened on your device and its pages counted.

Use the results

See the total and print sheets, then download a CSV or copy the list.

Tips

Getting the most from a page count

A page count is often the first step in a bigger job. These tips save a second trip.

Quoting for printingCheck the page size column: a printer will charge differently for A3 or mixed sizes. Double-sided sheet counts assume each file is printed on its own.
Quoting by the word insteadTranslators and typists often price per word. PDF to Text shows the word count of a PDF along with its text.
Merge before you printPrinting one combined file avoids a blank back page at the end of every odd-length document. Use Merge PDF first.
Spotting blank pagesIf a scan’s count looks too high, it may include blank backs of pages. Delete PDF Pages can find and remove them.

Like every Altto tool, this runs on your device — nothing you add is uploaded. How Altto works

1,000s

of PDFs can be counted in one go. Only the page list is read, not the content, so even a folder of large scans takes seconds rather than minutes.

Paper sizes

Common PDF page sizes

The page size column uses these names. Anything else is shown in millimetres.

Standard paper sizes recognised by the counter
Name	Millimetres	Typically used for
A4	210 × 297	Almost all documents in the UK and Europe
A5	148 × 210	Booklets, flyers and notebooks
A3	297 × 420	Posters, drawings and spreadsheets printed large
US Letter	216 × 279	Documents from the US and Canada
US Legal	216 × 356	Some US contracts and forms

FAQ

Frequently asked questions

How the counting works and what the numbers mean. To split a long PDF into parts, use Split PDF.

How do I count the pages in lots of PDFs at once?

Select them all (or drag a whole batch from a folder) and press Count. Each file gets its own line with its page count and page size, and the total appears at the top. You can download the list as a CSV for a spreadsheet or invoice.

Is it accurate for scanned PDFs?

Yes. The count comes from the PDF’s own list of pages, not from reading the text, so scans, photos and image-only PDFs count exactly the same as typed documents.

Does it work on password-protected PDFs?

Usually, yes. Most protected PDFs still let a program read how many pages they have without the password, so you’ll see the count with “(protected)” next to the name. A file that can’t be read at all shows a dash.

How is the number of sheets worked out?

Single-sided printing uses one sheet per page. Double-sided uses one sheet per two pages, rounded up for each file, because a printer starts every new document on a fresh sheet. Booklet printing and several pages per sheet would use fewer.

What does the page size column mean?

It names the paper size each PDF was set up for, such as A4 or US Letter, and says how many pages are landscape. A file with mixed sizes lists each size with its count, which is worth knowing before you send it to a printer.

Are my PDFs uploaded?

No. Each PDF is opened by a PDF engine running in this tab, and only the page count is read. Nothing is sent to a server, so it’s safe for confidential files and batches you’re billing for.

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