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10 Excellent iPad Apps to Annotate, Highlight, and Add Comments to PDFs

January 29, 2014
One of the first reasons behind me buying iPad was to be able to access and read my PDFs anytime anywhere I want without having to always depend on my Mac for that. However, my experience with reading PDFs on iPad has taught me many things and over the time I came to discover a wide range of great apps to use on my PDFs. These are particularly apps which you can use to annotate, highlight, add notes, record, and comment on the content of your PDFs. I have compiled these apps in the list below and want you to have a look.

1- iAnnotate

This is my favourite of them. iAnnotate is app that lets you read, highlight, and share PDF, Doc, PPT, and images file. As for annotating your PDFs, iAnnotate provides you with a plethora of options to choose from including: pen, highlighter, typewriter, stamp, straight-line, note, underline, strikeout, photo, voice recording, and date stamp tools. Copy and paste annotations, even from one document to another.

2- ezPDF Reader

This is another wonderful app that offers some interesting functionalities to use on your PDFs, these include tools to  add text in text box and sticky notes; highlight, underline, or cross out texts; draw lines, arrows, rectangles, ovals and freehand drawings. Add memo, change color / thickness, resize and move them around as you like.

3- PDF pen for iPad

This app allows you to  add text, images and signatures to PDFs, correct text in original PDF with editable text blocks, fill out PDF forms , add notes, comments, and freehand scribbles , draw lines, arrows, rectangles, ellipses and polygons, and organize your documents using Folders.

4- PDF Hilighter

As its name indicate, PDF Highlighter is a powerful app that enables you to highlight important passages, add text notes, freehand sketches, and even voice memos. All your annotations are saved directly to the PDF file, so that you can review them later on a Mac or PC, using standard software like Acrobat Reader or Mac OS X Preview.

5- PDF Notes

This is an app that you can use to manage all the pdf files on your iPad. Fast display, quick page-turning even a thousand pages, useful finger-writing and email your notes to your friends.
6- PDF Reader

This app does not only read PDFs but also provides a bunch of other interesting services including: Form filling, contract signing, free handwriting, text box, highlighting, sticky notes, stamp tools.

7- Fast PDF

Besides reading PDFs, this app also provides you with the ability to organize your documents in bookshelf with cover images and sort them with your finger, read your documents in different modes, zoom on each page with a pinch gesture of your fingers or with a double tap and view every pdf page in full screen mode.

8- PDF Expert 5

PDF Expert 5 is a very powerful app that you can use  to markup documents with highlights and handwriting, insert text and stamps, sign and even merge PDFs.

9- PDF Forms

PDF Forms is a powerful software tool for work with PDF documents and forms which allows commenting on ready PDF documents, filling forms, signing legal documents such as contracts or notices and sharing processed PDF documents via email, Google Drive or Dropbox or simply print via AirPrint.
10- AnnotDoc

AnnotDoc supports annotation on popular document formats including MS Word, MS PowerPoint, and PDF. Both the original MS Office 2003 format and the latest 2007 and 2010 Open XML format are supported. It also supports exporting the above MS documents to PDF, with the annotations.