Editing PDF files with Adobe Reader - Video đã phát trên - VTV.VN 1.0

Create, edit, convert, sign, annotate, and compress PDF documents.

Merge various PDFs, split a PDF in separate documents and add protection.

Free

PDF Reader is intended for reading DRM-X protected interactive PDF files.

Free

It is a lightweight, easy-to-use, and secure PDF reader.

It lets you crop or removes the white margins (space) from PDF pages.