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PDF Page Counter
Count the pages in a PDF — and see its first-page size and file size — instantly in your browser.
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Quick Answer
Upload a PDF and the tool shows its number of pages, the first page's size in PDF points (72 points to the inch), and the file size. It just reads the document — nothing is changed or saved. Everything runs in your browser; nothing is uploaded.
What the PDF Page Counter Does
This tool inspects a PDF and reports its basic facts: how many pages it has, how big the first page is, and how large the file is. It reads the document without altering it.
It is the quick way to check a PDF's length and page size — useful before printing, uploading to a service with a page limit, or confirming a document is the size you expect.
How It Works
The tool opens the PDF in the browser and reads its structure. It asks the document for its page count, measures the first page's width and height, and reads the file's size, then displays the three figures.
Page dimensions are reported in PDF points, the unit a PDF uses for layout: there are 72 points to an inch, so a US Letter page is 612 by 792 points and an A4 page is 595 by 842. Nothing is written back — the tool only reads.
Processing pipeline
- Open the PDF. Load the document in the browser and read its structure.
- Count the pages. Ask the PDF for its total number of pages.
- Measure page one. Read the first page's width and height in points.
- Report the facts. Show the page count, first-page size and file size.
What it reports
pages = the PDF's page count
first-page size = width × height in points (72 points = 1 inch)
file size = the file's size in kilobytesWorked example
a US Letter PDF → size 612 × 792 points (8.5 × 11 inches)Sizes are in PDF points (72 to the inch). It measures the first page; if a document mixes page sizes, other pages may differ. It only reads — nothing is changed.
Privacy
The PDF stays on your device. It is opened and inspected locally in the browser — no upload, and no copy kept anywhere.
Nothing is stored and there is no account. Refresh or close the tab and the document is cleared from memory — fine for private files. The tool only reads; it never modifies or saves your PDF.
Standards & references
- PDF points — A PDF measures layout in points, with 72 points to an inch. So US Letter is 612 by 792 points and A4 is 595 by 842. The tool reports the first page's size in these units.
- Page count — The page count is read directly from the document's structure, so it is exact — the true number of pages the PDF contains, however the file was produced.
- Read-only — The tool only inspects the PDF. It does not change, optimise or re-save the file; the figures are read and displayed, and your original is untouched.
Accuracy & Limitations
The page count and file size are exact, read straight from the document, and the first page's dimensions are reported precisely in points as the PDF stores them.
It measures the first page only. If a document mixes page sizes — say a landscape chart among portrait pages — the reported size reflects page one, not necessarily the rest.
Sizes are in points, not inches or millimetres. Dividing by 72 gives inches (so 612 points is 8.5 inches); for centimetres, multiply inches by 2.54. The tool shows the raw point values.
It does not count words, images or other contents. It reports pages, first-page size and file size only — for text or image counts, a different tool is needed.
Real-World Use Cases
Checking length
See how many pages a PDF has before printing.
Confirming page size
Check whether a PDF is Letter or A4.
Meeting a page limit
Verify a document fits a submission limit.
Quick inspection
Read a PDF's basic facts without opening it fully.
When to use it — and when not to
Good for
- Counting a PDF's pages
- Checking the first page's size
- Reading the file size
- A quick read-only inspection
Not the best choice for
- Counting words or images
- Measuring every page's size
- Editing or optimising the PDF
- Extracting the content
To count words, extract the text first and use a word counter. To measure every page, a PDF inspector that lists per-page sizes is needed. This tool reports the page count, first-page size and file size only.
Frequently Asked Questions
What does the page counter show?
Three things: the number of pages, the first page's width and height in PDF points, and the file size in kilobytes. It reads them directly from the document without changing anything.
What are PDF points?
The unit a PDF uses for layout, with 72 points to an inch. So a US Letter page is 612 by 792 points and an A4 page is 595 by 842. The tool reports the first page's size in these units.
How do I convert points to inches or centimetres?
Divide points by 72 for inches — 612 points is 8.5 inches. For centimetres, multiply the inches by 2.54. So 612 by 792 points is 8.5 by 11 inches, or about 21.6 by 27.9 centimetres.
Does it measure every page's size?
No, only the first page. Most PDFs use one size throughout, but if a document mixes sizes, the reported dimensions are for page one and may not match the others.
Is the page count always exact?
Yes. It is read straight from the document's structure, so it reflects the true number of pages, regardless of how the PDF was created or what it contains.
Does it change or re-save my PDF?
No. The tool only reads the document to report its facts. It never edits, optimises or saves the file, so your original stays exactly as it was.
Can it tell me if a PDF is Letter or A4?
Yes, indirectly. A first-page size of 612 by 792 points is US Letter, and 595 by 842 points is A4. Comparing the reported size to those tells you which standard it matches.
Why might the file size look large for few pages?
Because file size depends on content, not just page count. Pages with high-resolution images or embedded fonts make a file large even with few pages, while text-only pages stay small.
Does it count words or images in the PDF?
No. It reports pages, first-page size and file size only. To count words, extract the text and use a word counter; for images, a different inspection tool is needed.
Is my PDF uploaded to count the pages?
No. The document is opened and read entirely in your browser. It is never uploaded and no copy is kept, so it stays private on your device.
Can it read a password-protected PDF?
A protected PDF needs to be unlocked first. If it is encrypted, the tool cannot read its structure to report the page count until the password is supplied.
Why check the page count at all?
To confirm a document's length before printing or sharing, to check it meets a page limit for a submission, or simply to verify a PDF is what you expect without opening it fully.
References
Reads the PDF's page count, the first page's dimensions in PDF points, and the file size; it inspects the document locally and changes nothing.
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Ready to try the PDF Page Counter?
It is free, private and runs entirely in your browser — no sign-up, no uploads, no limits.