PDF reading
Now common manuals and e-books are pdf, so a used pdf reader is very important.
Native PDF Reader
A very lightweight reader, SumatraPDF, is recommended for local PDF reading. It is small, supports Chinese, and is suitable for temporarily viewing some PDF files.
Online PDF Reader
In fact, I use an online PDF reader more often. The advantage is that it is cross-platform, and files and notes are all on the cloud.
The kami viewer annotation recommended here is itself a web application and also has a chrome plug-in.
Clean and beautiful interface, powerful annotation and comment function, practical backup, and its own cross-platform features as a web application, as well as cloud notes, all make it stand out.
It has good cooperation with google, so the recommended usage here is: first upload the pdf file to google drive, then in kami you can choose to read the pdf file from google drive, and notes and comments can be synchronized to google drive, The benefits of this are also obvious. In case kami blows up, the file pdf body and notes can still be viewed and downloaded in google drive.