Add clean page numbers to any PDF. Customize position, format, and size. Runs entirely in your browser.
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Page numbers are one of the most fundamental elements of professional document design. Whether you're preparing a business report, a thesis, a legal brief, or a presentation handout, numbered pages make navigation dramatically easier. Readers can reference specific content by page number, and physical printouts become far easier to reassemble if shuffled.
Many PDF editors charge a subscription fee just to add page numbers — a simple, trivial operation. This free tool does it instantly, privately, and with full customization, at zero cost.
Bottom Center is the most conventional choice for most documents — books, reports, and academic papers typically place page numbers here. Bottom Left or Bottom Right can be useful for two-sided (duplex) printing, where you want the page number closer to the outer edge. Top Center is less common but useful for documents where the bottom margin is needed for footnotes or other content.
The "Page 1 of N" format is especially useful for multi-page reports and documents shared digitally — readers immediately know how long the document is and how far through it they are. The plain "1" format is clean and minimalist, ideal for books and designs where whitespace is valuable. The "– 1 –" format adds a classic typographic touch.
This tool uses pdf-lib, a pure JavaScript PDF manipulation library. It loads your PDF as binary data, embeds Helvetica (one of PDF's 14 standard fonts), calculates the precise coordinates for each page based on your chosen position and font metrics, then draws the text with a slight opacity for a polished look. The modified PDF is then downloaded directly to your device — no server round-trip, no latency, no privacy risk.
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