Firefox 106 won’t be a massive update to the open-source and cross-platform web browser, but it will bring a few interesting changes for those who deal a lot with PDF documents, such as annotation capabilities in the built-in PDF viewer to let you write text, draw, or add signatures to PDF files.
This feature was implemented in previous Firefox releases, but it wasn’t enabled by default, which means that you had to manually enable it from the about:config settings by setting the pdfjs.annotationEditorMode variable from -1 to 0. With the Firefox 106 release, the PDF annotation capabilities will be enabled by default.