Add page numbers
Number every page of your PDF, centered at the bottom.
Processed on your device — nothing is uploaded. Works offline.
Don't trust us — test us
Load this page, then turn off your wifi. The tool keeps working, because your file is processed by your own browser — there is no server involved and nowhere to upload to. How to verify this yourself →
Frequently asked questions
Are my files uploaded to a server?
No. All processing happens inside your browser using WebAssembly and JavaScript. Our server only serves the app itself — there is no endpoint that can receive files. You can verify this in your browser's network tab, or turn off your wifi after the page loads: everything still works.
Is there a file size limit?
No hard limit — your device's memory is the ceiling. Files up to a few hundred MB work well on a typical laptop. Very large files may be slow or fail on low-memory devices; nothing is ever truncated silently.
Do I need to create an account?
No. No account, no email, no cookies. The free tools are simply free.