Deprecated in favor of https://f-droid.org/packages/com.artifex.mupdf.viewer.app. The last version has multiple vulnerabilities: * https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15587 * https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14687 * https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14686 * https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14685 MuPDF supports PDF 1.7 with transparency, encryption, hyperlinks, annotations, searching, form editing and more. It also reads OpenXPS and CBZ (comic book) documents.