reading and editing pdf's in LibreOffice 7.0

Hi dear great LibreOffice community
I know how to open pdf files in LibreOffice draw, as well as exporting a Writer document into a pdf. However, what I would like to know is how I can read and edit (highlight) pdf files in LibreOffice 7.0
Do I need to install other extensions? Should I read articles in other software programs like Mendeley/Endnote/Zotero?
I am open to tips and suggestions. Thank you very much for your attention.
Con

However, what I would like to know is how I can read and edit (highlight) pdf files in LibreOffice 7.0

Any PDF reader can do that better than LibreOffice Draw can do as long as editing means for you: Highlighting text and making annotations


> Do I need to install other extensions?

No, use a PDF reader (capable of making annotations and highlighting text) instead of using LibreOffice.


>Should I read articles in other software programs like Mendeley/Endnote/Zotero?

The mentioned software programs (extensions) got nothing to do with your question about reading and editing PDFs.

Great! Thank you very much for your prompt reply. Is there a pdf reader that you recommend? Hopefully not a silly question.

There are many PDF readers, some of which work only under the OS they were developed for. You didn’t mention your OS.

OS=Windows
Also, I am looking for ways to edit pdf files (articles I wrote); and I want to delete adds before I post them elsewhere. When I edit in draw and export the edited file as a portable pdf the text does not look the same and the biochemical formulas are distorted. Sigh!!
How can I read and edit pdf files, while maintaining the quality content of a pdf?
Thank you so much for reading this.

When you edit a PDF in Draw, you’re editing a series of graphical pages , not a structured document. This may explain what you experience.

Considering your goal, a PDF viewer is not enough. You need a full-fledged PDF editor. Some have appeared in the past years, most are commercial products (notably one from Adobe whose name I forgot).

No experience with Windows so, sorry, I can’t give advice.

I should consider switching to Linux. In the meantime I found suggestions on the link below:

From my perspective editing PDFs is and will be a hack. PDF is the document type designated for long term retention periods in combination with security features (encryption and signing) for legal purposes (at least in the region I live in). And that direction will make editing PDFs rather more complicated that easier to perform. In that sense: Use LibreOffice Writer and create master documents and export to PDF on demand for the articles your write. Foreign PDF documents lead to a more complicated legal discussion, which I better leave off …

Many thanks for all these valuable comments. Depending on the business needs I may have to invest in Adobe Acrobat and MS Office, although rather not. Switching to OS Linux is a great suggestion, but figuring it all out by myself is too time-consuming. I would definitely need help with setting that up.
At the same time, I believe that there is a future for open-source software and better-operating systems.