Pick position
Choose footer or header placement.
Add page numbers to a PDF header or footer before printing or sharing a packet. Numbers are drawn on every page in your browser.
PDFProcessed privately in your browser — files are not uploaded.
Your PDF is not uploaded to stamp numbers.
Choose footer or header placement.
SortMyFile writes page numbers with pdf-lib and lets you download the result.
Add page numbers to header or footer — A portal rejects the file shape and you must fix it without desktop Acrobat. You inherited a messy packet from a scanner or email thread and need a clean file before a form upload.
Page Numbers is built for private, in-browser work. Upload-based PDF sites often store temporary copies on someone else’s disk; SortMyFile’s default is the opposite — processing stays on your device for this utility. Your PDF is not uploaded to stamp numbers. If a step needs a one-time language pack or WASM library from a CDN, that is asset delivery — not your document contents being sent to SortMyFile for server-side processing. Close the tab when you are done if you want memory cleared.
Add page numbers to header or footer. Before you run Page Numbers, keep an original copy of every source file. Spot-check the download on the same device you will use for the portal or email. Large scans and phone photos are limited by browser RAM — if a run stalls, shrink the input first or split the job. SortMyFile browser tools stay free forever with no daily caps.
Add page numbers to header or footer — A portal rejects the file shape and you must fix it without desktop Acrobat. You inherited a messy packet from a scanner or email thread and need a clean file before a form upload. People reach for Page Numbers when a form, HR desk, or messaging app rejects the current file shape, size, or format and installing desktop software is overkill. Pair it with add-bookmarks-to-pdf, merge-pdf, compress-pdf when you need a short pipeline (for example compress then OCR, or HEIC to JPG then JPG to PDF). Results are not a substitute for official portal rules — always re-read the receiving site’s instructions before a deadline.
Page Numbers trades convenience for honesty about browser limits. Extremely large files, corrupted inputs, or DRM-protected media can fail. Password-protected PDFs need a password you already know — SortMyFile does not crack encryption. Free use does not require an account; Pro (when checkout ships) is planned to raise limits and reduce ads. Until then, the free tier is enough for most one-off private jobs.
Common questions
The free tool uses sequential numbering from 1. Custom start indices may arrive in Pro later.
Add page numbers to header or footer. It runs in your browser on SortMyFile so you can finish the job without an upload converter.
No. Page Numbers processes locally in the tab. We do not operate an upload API for this tool.
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