In Android there are countless options to work with PDF files, but not everyone is free, safe or free. Therefore, we have selected Four Open Source applications This will allow you Read, write and modify the pdfs No cost or hidden restrictions.
All the apps you will see are 100% freeWithout intrusive announcements and mainly available in F-Droid (the alternative free software shop that we have already taught you to install). Ready to free you from closed apps? This is our selection:
Mupdf, a complete and functional optional
The first application of this list has already been mentioned in previous occasions. Mupdf is a light app, free and without announcements It allows you to read PDF, XPS, CBZ and EPUB files without protection. It has a touch, zoom, research and highlighting function. In addition, it is fast and compatible with Android 5.0 or higher.
Reader bookstore, a good option to be taken into consideration
The next application in our list is Reader Librara, a very complete tool compatible with formats such as PDF, Epub, Mobi, Djvu, FB2, DOC and many others. In addition, it offers advanced functions such as the addition of annotations, the creation of markers, the writing of notes and even Create drawings directly on the document.
Link | Reader bookstore
Koreader, an app to read and modify the PDF that offers you notes, cuts to the images and much more
The third application we recommend is Koreader, an advanced and open source reader designed for devices with electronic ink screens. It is compatible with formats such as PDF, EPUB and others and offers functions such as Notes, underlined, notes, cuts of margins, Text reflux, export of highlighted tools and many other useful tools for personalized reading.
Link | Koreader
Orion Viewer, of the best apps to read and modify the Open Source PDF for Android
To close this selection, we present Orion Viewer, a free and open source application that allows you to view documents in formats such as PDF, DJVU, XPS, TIFF and others. Also allows you to select the text, Cut the margins and export selected words to external dictionaries, thus facilitating the consultation or translation.
Link | Orion viewer
And you … What do you think? Which of these apps to read and modify the Open Source PDF is the one you liked most? What other application of this type do you know and have not mentioned? Leave us your comment e Share this article on your social networks.
