How PDF is different from PostScript, how to identify key parts of PDF source code, layout problems, verbosity, flattening and mojibake.
Adobe
From Illustrator in 1987, Mac-only until 1989, through Photoshop in 1990, Mac-only until 1992, to InDesign, Dreamweaver and the dreaded Flash.
For the last 39 years, PostScript has been at the heart of the Mac, bringing desktop publishing, fonts, and the LaserWriter and other printers. It has been removed from Sonoma.
We often need to compare two documents, such as legal agreements or revisions of a report. How can we do this if they’re PDFs?
Preview now offers a tool to redact content from PDF documents. It’s simple to use, but is it safe, or could it lead to disclosure of sensitive information?
A compilation of links to major service status pages and other resources to help you when that service is playing up.
Dealing with protected PDFs in macOS: fully encrypted, and those with controls such as no printing or copying. Oh dear.
This PDF contained 161 scanned pages from a book, but not one word could be accessed as text, despite using OCR on them. What can you do?
A great idea: tag blocks of text in a PDF and build them into reading order, so that they can be read out loud. How well does that work, then?
Open a PDF document, select a URL within it and Copy. Then paste it into a webpage for publication. Simple – but the URL then broke. Why?
The Eclectic Light Company 