For what it's worth, Firefox has had most of these features built into their PDF.js viewer for a while. I believe signatures were recently added. I'm not sure whether there's capability to remove pages or merge PDFs, though.
pdf.js is also available as an extension on chromium based browsers.
I've found that scrolling on pdfs on a high dpi screen using the built in chromium pdf reader is extremely laggy so this has always been a must-have extension for me.
pdf.js is also available as an extension on chromium based browsers.
I've found that scrolling on pdfs on a high dpi screen using the built in chromium pdf reader is extremely laggy so this has always been a must-have extension for me.