03 / HOW TO ADD PAGE NU
How to Add Page Numbers to a PDF
Select a PDF file from your computer. The tool checks the file size and page count right in your browser: each file must be no larger than 50 MB and no more than 500 pages.
Once the file is accepted, the tool prints a number at the top or bottom of every page. The number is centered and appears in Helvetica at 10 point. There are no settings to change—the tool just adds numbers in the position you choose.
After processing, simply download your new PDF. The tool works entirely in your browser tab, so you can close the tab after downloading and the working copy is gone.
04 / WHAT HAPPENS INSID
What Happens Inside the Browser
This tool uses PDF code that runs directly in your browser tab. The entire process is client-side: your file is never uploaded to a server, so nothing is stored on any external system. The moment you close the tab, the working copy disappears.
Because the file stays on your device, this is a good option if you are dealing with sensitive documents. There is no need to trust a cloud service with your PDF.
05 / LIMITATIONS AND WH
Limitations and What the Tool Cannot Do
The tool adds the same number to every page, with no option to skip a cover page. If your document has a title page that you want to leave unnumbered, this tool is not the right choice for that task.
The number placement is fixed: centered at the top or bottom of each page, using Helvetica at 10 point. You cannot change the font, size, position, or style, and there are no settings to adjust.
The first number can be any integer from 0 to 999999. If you need to start at a number outside this range, this tool will not work for you.
06 / ERROR CONDITIONS Y
Error Conditions You Might Encounter
If your PDF is larger than 50 MB or has more than 500 pages, the tool will not process it. Check your file's properties and reduce the size or split the document if needed.
If you do not see the numbers after processing, verify that the file is a valid PDF and that it was not password-protected. The tool only works with standard PDF files.
Remember, there are no warning codes or error messages to interpret. The tool either works or it doesn't, and any problem you see will be the result of one of the above conditions.
07 / QUALITY AND ACCURA
Quality and Accuracy
Adding page numbers does not affect the content or quality of your PDF. The numbers are printed as text on top of the page, so the original elements—images, graphs, text—remain exactly as they were.
Because the process runs locally, the output file will be generated without any quality loss from upload and download cycles.
After downloading, always double-check the first and last pages to ensure the numbers appear exactly where you expect them.
08 / PRIVACY AND DATA S
Privacy and Data Security
Since the file is never uploaded, there is no risk of it being intercepted or stored on a third-party server. This tool is a good choice when you need to work with confidential business plans, legal documents, or personal records.
The processing is done by the PDF engine running inside your browser tab, so all you need is a compatible web browser. You can simply close the tab when you are finished—nothing remains.
FAQ
Common questions
Will adding page numbers reduce the quality of my PDF?
No. The tool adds numbers as text on each page, leaving the original content untouched. Since everything runs in your browser and the file is not re-uploaded, there is no quality loss from compression or transfer.
Can I add page numbers to a PDF with a cover page?
No. The tool adds a number to every page without exception. If you need to skip the first page, this tool cannot do that. Consider using a more advanced PDF editor that offers a 'different first page' setting.
What are the file size and page limits?
Each PDF file must be no larger than 50 MB and have no more than 500 pages. If your file exceeds these limits, you will need to compress it or split it into smaller parts before using this tool.
Why is the page number not appearing on my PDF?
Check that you selected a valid, non-password-protected PDF. Also verify the preview or downloaded file—the number is added to the top or bottom center and may be outside the visible area if your page margins are small. Open the output PDF to confirm.
Is it safe to upload my confidential document?
This tool does not upload your file at all. It processes the PDF entirely within your browser tab, so your document never leaves your device. Closing the tab discards the working copy, offering you total privacy.
Can I choose where the page number appears?
Yes, you can choose between the top and bottom of each page. The numbers are always centered, with no option to align left or right. The font and size are fixed at Helvetica 10 point.
What starting number can I use?
You can set the first number to any integer from 0 to 999999. Numbers are printed sequentially from that starting number. If you need a starting number outside that range, this tool cannot accommodate it.