Use a browser-based tool that removes the pages you pick and gives you a trimmed copy of the PDF to download. It runs entirely on your device, so the document is never uploaded, and it is free with no account and no watermark.
PDFs often carry more than the recipient needs: a blank scanner page, an internal cover sheet, pricing meant for someone else, or ten pages of boilerplate around the two that matter. Deleting pages before sending keeps the file small and, more importantly, keeps information you did not mean to share out of the document.
The tool reads your PDF in the browser, copies every page except the ones you removed into a fresh document, and lets you download that. Your original file on disk is untouched, so you can always go back to it, and because the work is local nothing is transmitted to any server.
No. You download a new trimmed copy and the original PDF stays as it was.
No. Pages are removed locally in your browser, so the file never leaves your device.
Yes. Select all the pages you want gone and download a single trimmed PDF.