Top 10 iPad apps for working with PDF documents

A list of the most popular free and paid mobile downloads

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Editor’s note: This article contains an updating list of the most popular free and paid iPad apps for working with PDF documents, a popular file type for sharing documents across devices and platforms.

These apps allow users to read PDF documents, convert files to PDF format, fill out forms in PDF documents, and share the files with others, among other tasks. The list is based on a search of the keyword "PDF" at apps-ranking site TopAppCharts.com.