Insert an empty page after any page you choose — for double-sided printing, or to leave room for notes.
Use Add Blank Pages (interactive) — JavaScript required for uploads.
A blank page is added directly after each page you list. The inserted page matches that page size, so mixed-size documents stay consistent.
Runs entirely in your browser — your file is never uploaded. Pages are copied into a new document with blanks interleaved.
Yes, completely free and with no account.
Not in one pass — run the tool again on the result.
Duplex printing often needs a blank so the next section starts on a right-hand page.
This tool works entirely on this page. Your file is opened by JavaScript here, changed in memory, and handed straight back to you — it is never uploaded. Open your browser's Network tab while you use it and you will see nothing leave your device.
Because there is no server doing the work, there is no signup, no watermark, no file size limit, and no daily cap. Nothing is stored, because nothing is received.
Browse all free PDF tools, or read how we handle privacy and security.