PDF guides and how-tos
Clear answers to everyday document problems, with the built-in methods for your phone or computer as well as ours.
- How to Resize a Photo to 20 KB or 50 KB for an Online FormGovernment, exam and job portals often want a photo of 20-50 KB and a signature of 10-20 KB. Here's how to hit the exact size and keep it sharp.
- How to Open HEIC Photos on Windows (and Convert Them to JPG)iPhone photos arrive as .HEIC files that Windows and many apps can't open. Here's why, how to view them, and how to convert them to JPG for free.
- How to Compress a PDF to 100 KB or 200 KB for Online FormsUpload portals often reject PDFs over 100 KB, 200 KB or 1 MB. Here's how to get a PDF under the limit without losing readability, on phone or computer.
- How to Turn Photos into a PDF on iPhone or AndroidMake one PDF from several photos or screenshots on your phone: the built-in iPhone and Android methods, and a faster way with page size and margins.
- How to Merge PDF Files into One (Windows, Mac, Phone)Combine several PDFs into one document in the order you want, free: the built-in Mac method, what Windows can and can't do, and a method that works on every device.
- How to Sign a PDF Without Printing ItAdd your handwritten signature to a PDF on your phone or computer, with no printer or scanner: draw it, type it, place it on the page and add the date.
- How to Password Protect a PDF (Free, Strong Encryption)Lock a PDF so it needs a password to open, before you email or share it. How PDF passwords work, how strong they are, and how to send the password safely.
- How to Extract Pages from a PDF (Save Only the Pages You Need)Pull specific pages out of a PDF, such as pages 1-10 or pages 5, 20 and 31, and save them as a new PDF or as separate files. Free, on any device.
- How to Convert a PDF to an Editable Word DocumentTurn a PDF into a Word (DOCX) file you can edit: what converts well, what doesn't, and what to do with scanned PDFs or Arabic text.
- How to Remove a Password from a PDF (When You Know It)Bank statements and e-bills often arrive locked. If you know the password, here's how to save an unlocked copy so you don't have to type it every time.