PDF guides
Quick, honest how-tos: shrinking files for email and WhatsApp, signing on your phone, merging on Mac, iPhone and Windows, and keeping documents private.
How to compress a PDF for emailPDF too big to email? Shrink it below your email's attachment limit in your browser, see the quality before…How to make a PDF smaller to send on WhatsAppSend big PDFs on WhatsApp faster: shrink them on your phone or computer in the browser, check the quality,…How to get a PDF under 1 MBForms and job portals often require PDFs under 1 MB. See the exact size of each option before you save, and…How to reduce PDF size without losing qualityMake a PDF smaller with no visible quality loss: remove waste first, then shrink only the pictures, with a…How to merge PDFs on iPhoneCombine PDFs and photos into one PDF on your iPhone, right in Safari. No app to install, no upload, and you…How to merge PDFs on a MacTwo easy ways to combine PDFs on a Mac: with Preview, or with pdfSofo in your browser when you also want to…How to merge PDFs on Windows (no install)Combine PDFs on Windows 10 or 11 in Edge or Chrome, with no software to install and no upload. Reorder pages,…How to sign a PDF on iPhoneSign a PDF on your iPhone in Safari: draw with your finger, type your name, or use a photo of your real…How to sign a PDF without printing itSkip the printer and scanner: add your signature and initials to a PDF on your computer or phone, fill in…How to turn a photo of your signature into a digital signatureSign on paper, snap a photo, and get a clean, see-through digital signature with the paper, shadows and lines…How to remove pages from a PDFDelete one or more pages from a PDF, keep the rest in order, and save a new file. Free, private, in your…How to combine photos into one PDFTurn several photos or scans (JPG, PNG, iPhone photos) into a single PDF, in order and sized to A4 or Letter.…How to remove a password from a PDF you can openMake an unlocked copy of a password-protected PDF you're allowed to open. Enter the password once, then save…Is it safe to upload PDFs to online PDF tools?What happens to your files on online PDF sites, the questions to ask, and how to edit PDFs without uploading…Free PDF tools with no watermark (and no sign-up)Merge, compress, sign and edit PDFs for free with no watermark stamped on your file, no account and no daily…Merge PDF files with no watermarkCombine PDFs into one file for free, with no watermark, no account and no upload. Reorder pages with drag and…How to edit PDFs offlineMerge, sign, crop and compress PDFs without an internet connection. Open pdfSofo once and it keeps working…