PDF files are not like Word can be edited and changed directly, if you want to edit annotations on PDF files, you need to use some professional software, I have three commonly used ones, all of which are official professional software, rich and powerful, very convenient to use!
1.Edge browser
This browser can not only open and view PDF files directly, but also color annotate and paint PDFs, all of which come with the browser and do not need to install other plug-ins.
However, its functions are limited to color annotation, brushes, erasers, and translations, and the functions are not rich.
2. Swift PDF editor
If you need a full-featured PDF editing software, then this one will definitely meet your needs. It can complete text editing, highlights, circlering, underlining, annotation and many other note-taking functions.
When editing PDF, not only can you change the text, but you can also edit tables, images, formats, etc., like Word, and you can have a high degree of freedom.
When annotating the text, it can also be done in the blank space of the text, and the tools such as drawings and marquees that need to be used can be freely selected. It is also very convenient to insert pictures, text, etc., and the location is optional.
3. Search while listening
It's supposed to be a great note-taking software, but its document editing features are very easy to use, allowing you to upload PDF files and edit them directly.
It can highlight the open document, underline, box select content, excerpt, translate and other operations, and use the left function bar to complete the content that needs to be marked.