When I opened a PDF to inspect its source, the file was quite different to that seen in BBEdit. Was my file system broken?
Would you like to have two or more windows open on the same document, so you can check notes or references while reading? Now you can, for PDFs.
PDF is an invaluable, universal document format which is fundamentally flawed, allowing it to leak unintended content and worse. Here’s how this happens.
Three ways to remove data from PDFs: redaction, deletion of content, and deletion of annotations. Can you trust them, or do they leak data?
That document is damaged and can’t be opened. But you think it’s got versions saved, if only you could get at them. How?
Do you use digital signatures in PDF documents, or do you trust your PDF reader to check them? You could be spoofed into trusting forgeries.
Getting the Find feature right for PDF documents is important. With text find already available, the best solution is distinct from that.
For less than the cost of a year of Adobe Acrobat Pro DC, this is the first choice for anyone who needs more powerful editing tools.
For around half the cost of a year of Adobe Acrobat Pro DC, you can have a superb PDF reader with good general annotation and editing tools.
Can you get malware in PDF? How far can you trust a PDF, or could it be a forgery? How to sign PDFs, and what data may remain hidden inside them.