I use a screen reader, so of course some kind of text extraction is how I read PDFs all the time. There were some nice gotchas I've found. * Polish ebooks, whi

I use a screen reader, so of course some kind of text extraction is how I read PDFs all the time. There were some nice gotchas I've found. * Polish ebooks, which usually use Watermarks instead of DRM, sometimes hide their watermarks in a weird way the screen reader doesn't detect. Imagine hearing "This copy belongs to address at example dot com: one one three a f six nine c c" at the end of every page. Of course the hex string is usually much longer, about 32 chars long or so. * Some tests I had to take included automatically generated alt texts for their images. The alt text contained full paths to the JPG files on the designer's hard drive. For example, there was one exercise where we were supposed to identify a building. Normally, it would be completely inaccessible, but the alt was something like "C:\Documents and Settings\Aneczka\Confidential\tests 20xx\history\colosseum.jpg". * My German textbook had a few conversations between authors or editors in random places. They weren't visible, but my screen reader still could read them. I guess they used the PDF or Indesign project files themselves as a dirty workaround for the lack of a chat / notetaking app, kind of like programmers sometimes do with comments. They probably thought they were the only ones that will ever read them. They were mostly right, as the file was meant for printing, and I was probably the only one who managed to get an electronic copy. * Some big companies, mostly carriers, sometimes give you contract templates. They let you familiarize yourself with the terms before you decide to sign, in which case they ask you for all the necessary personal info and give you a real contract. Sometimes though, they're quite lazy, and the template contracts are actually real contracts. The personal data of people that they were meant for is all there, just visually covered, usually by making it white on white, or by putting a rectangle object that covers them. Of course, for a screen reader, this makes no difference, and the data are still there. Similar issues happen on websites, mostly with cookie banners, which are supposed to cover the whole site and make it impossible to use before closing. However, for a screen reader, they sometimes appear at the very beginning or end of the page, and interacting with the site is possible without even realizing they're there.