Switch Base of /e/ OS PdfViewer

• /e/ version: 1.13-s-20230724313396-stable
• Device model: Fairphone 4

Summary

Switch to a new base for the /e/ OS PdfViewer, because the current isn't maintained. It also miss simple features like search.

Description

What is the current behavior?

Currently the PdfViewer is based on a app, that isn't maintained anymore at upstream for years. That viewer may have security issues. It also leaks of simple features like searching.

What is the improved behavior?

The PdfViewer should be based on a app, that is actually maintained. Here same suggestion including the old one for comparison:

app	maintained	fulltext search	share button	can shows table of content
PDF Viewer Plus	❌	❌	✅	❌
MJ PDF	✅	✅	✅	✅
MuPDF viewer	✅	✅	❌	✅

Add more suggestion, if you know some.

What does it bring?

More security and features.

Examples

Validation