add page numbers to pdf online free

Page numbers help readers navigate a document and reference specific pages, especially for reports, contracts, or academic papers where someone might need to say 'see page 12' during a meeting or review. A document without page numbers makes this kind of reference awkward and imprecise.

You can control where numbers appear, in the header at the top of the page or the footer at the bottom, and how they're aligned, left, center, or right. Footer-center is the most common convention for general documents, while header placement is more common for formal reports with a lot of footer content already in use, like citations or copyright notices.

Beyond just the number itself, you can add a prefix or suffix, turning a plain '5' into 'Page 5' or '5 of 20', which gives readers more context without them needing to guess the total page count themselves. You can also set a custom starting number, which matters for documents that continue a sequence from an earlier section.

After adding page numbers, check a few pages in the preview, particularly the first and last, to confirm the position and formatting look correct throughout the document. This is a fast document-wide setting, so if the position or format is wrong, it will be wrong on every page, making it worth a quick check before finalizing.