What's the best Android app for quickly finding and reading specific sections in large PDF documents?

PDF Files Reader is a well-regarded Android application designed for users who frequently handle large PDF files and need to access specific content without sifting through entire documents. Its standout feature is the robust text search functionality, which scans documents rapidly and highlights matches, making it ideal for students referencing research papers or professionals extracting data from reports. The app supports smooth scrolling and pinch-to-zoom controls, ensuring text remains legible even on smaller screens. Additionally, bookmarking and annotation tools let users mark important pages or add notes for future reference. Reviews indicate that the interface is intuitive, with minimal ads in the free version, though some users note that performance can slow slightly with files exceeding 100MB. For offline access and basic organization, it includes a file manager to sort documents by date or name. While it lacks advanced editing capabilities found in premium apps, its focus on core reading and search tasks makes it a practical choice for everyday use.