Add Page Numbers to PDF Free — In Your Browser
Drop a PDF, pick a corner, choose font size and starting number, get a clean PDF with page numbers on every page. Browser-only. No upload, no signup, no watermark.
Drop a PDF to add page numbers
Numbering runs locally — your file never leaves your browser
About this tool
WRRK's PDF page-numbering tool stamps a clean page number on every page of a document. Everything runs in your browser using pdf-lib — a JavaScript PDF engine that reads, modifies, and writes pages without ever sending your file to a server. Numbers use built-in standard fonts (Helvetica), so they render in every PDF reader and add almost nothing to file size.
Most online numbering tools force an upload, sit you in a queue, and then trust that the file is deleted afterwards. WRRK keeps the work on your device, the output is unwatermarked, and there's no signup or daily file cap. The starting-number control is handy when this PDF is part of a larger merged document — set the start to the page after the section before it, and the numbering picks up seamlessly.
How to add page numbers (5 steps)
- Drop your PDF. Drag and drop the PDF, or click Choose PDF. The tool reads it locally and shows the page count.
- Pick position. Choose top-left, top-center, top-right, bottom-left, bottom-center, or bottom-right.
- Set style. Pick a font size and the starting number. Most reports use size 10–12 starting at 1.
- Apply. Click 'Add page numbers'. Numbering runs locally — your file is never uploaded.
- Download. Preview the result inline, then click Download to save the numbered PDF.
When to add page numbers to a PDF
- Preparing a thesis, dissertation, or academic submission
- Numbering legal exhibits in a discovery bundle
- Adding folio numbers to a printable photo book
- Numbering chapters of a downloaded ebook for easier reference
- Producing a board pack where every page must be referenceable
- Continuing numbering in a section that follows another PDF
- Adding page numbers to a scanned bundle that came in without them
Frequently asked questions
+−How do I add page numbers to a PDF for free?
Drop your PDF, pick where the numbers should appear (top or bottom corner, or center), set the font size and starting number, and click Apply. The numbered PDF is built locally in your browser and downloads instantly.
+−Are my files uploaded to a server?
No. Page numbering runs entirely in your browser using pdf-lib. Your PDF never leaves your device — the tool works offline once the page is loaded.
+−Can I start numbering from a number other than 1?
Yes. Set 'Start from' to any positive integer. If you set it to 5, page 1 of the PDF prints as 5, page 2 as 6, and so on — useful when this PDF is part of a larger document.
+−Where on the page do the numbers appear?
You can pick any of six positions: top-left, top-center, top-right, bottom-left, bottom-center, or bottom-right. The number is offset 24 points from the page edge for safe margins.
+−Does numbering work on landscape and mixed-orientation PDFs?
Yes. The position is computed per page from each page's actual width and height, so landscape and portrait pages both get correctly positioned numbers.
+−Can I number a password-protected PDF?
If a PDF is encrypted, the tool tries to load it with the ignoreEncryption flag. If that fails, decrypt the source first using its original password, then add page numbers.
+−Does the output have a WRRK watermark?
No. Only the page numbers you configured are added. The output has no other branding or watermark from us.