Ben Chuanlong Du's Blog

It is never too late to learn.

Extracting Data from PDF Files

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Sometimes, a PDF file is corrupted or encrypted making it hard to extract data from it directly. In this case, you can convert a PDF page to an image first and …

View and Edit PDF Documents Using Okular

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

  1. Okular supporting annotating PDF pages but does not supporting adding/removing PDF pages.

  2. Okular supports rotating all pages of the whole PDF file but does not support rotating a single page …