Articles
Practical guides on working with PDF files.
How to Merge PDF Files Into One DocumentAdd your PDF files, set the page order, combine them into one document, and check the result. Here is how to merge PDFs without losing control of the sequence.
How to Scan a Book to PDF With Your PhonePhotos of an open book come out curved, two pages to a frame, and unsearchable. Here is how to set up the shot and turn it into a clean PDF.
Why Won't My PDF Print? Six Causes, and the Fix for EachNothing prints, or the pages come out blank, or the print button is greyed out. These are different faults. Here is how to tell them apart and fix each one.
How to Fix "PDF File Size Must Not Exceed 2 MB" Before Your DeadlineThe order to work in — biggest saving first — to bring a PDF under a 2 MB, 1 MB or 200 KB upload limit without making it unreadable.
Why PDF Files Get So Large, and How to Make Them SmallerA three-page PDF that weighs forty megabytes is almost always carrying something invisible. Here is what actually takes up the space and which fixes are safe.
Where PDF to Word Conversion Breaks, and WhyConverted documents lose their layout in predictable places. Here is what a PDF actually stores, which structures survive conversion, and how to prepare a file.
Filling In and Signing a PDF When the Form Will Not CooperateSome PDF forms accept typing and some ignore it entirely. Here is why, what signing a PDF actually means, and how to return one that will be accepted.
Why You Cannot Select Text in a Scanned PDF (and How to Fix It)A scanned PDF holds a photograph of a page, not letters. Here is what OCR really changes, why results vary, and how to turn a scan into editable text.