Ionic 4:I'm using pdf-viewer to view pdf files. but can't zoom the page in mobile

I am using the pdf-viewer to read the pdf files in the assets folder in a new ionic 4 project and achive it successfully but I can’t customize the pdf like zoom ,goto pageNumber. because of this my pdf readability is poor. Is there any other working plugin to do this in ionic native.

I’m sorry I can’t help right now, but I’m looking for a pdf solution for my app. What pdf-viewer did you integrate and how did you integrate it? If you let me know, maybe I can get it working on my end and figure out how to do the zoom.