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In-memory processing
Page Numbers runs as JavaScript inside this tab.
Never uploaded
Safe for financials, contracts and NDAs.
No caps or sign-ups
File size is limited only by device memory.
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Add page numbers to a PDF before printing, submitting or sharing long reports, contracts and theses, so readers can refer to specific pages.
Also known as Number PDF pages.
Numbers can be placed at the top or bottom of each page, either as a plain number (1) or as Page 1 of N. They are added as real text, so they stay sharp when printed.
Yes. Page Numbers runs entirely inside your web browser using JavaScript, so the file never leaves your device. It is safe for confidential documents such as contracts, financial records and IDs.
There is no fixed limit, because the file is processed on your own device. Very large files depend on your device's available memory; a modern laptop or phone handles hundreds of megabytes.
Yes. ZapConvert runs in any modern browser, including Safari on iPhone and iPad and Chrome on Android, with nothing to install. You can add several files at once and download them together as a ZIP.