The 5 Best PDF Reading, Editing, and Annotation Apps for Android
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We read books both for information and knowledge. Although both are essential aspects of reading, we cannot tell the difference between them. When you annotate, your mind develops a contextual relationship with the book.

You include facts, criticisms, and links to related documents or web links. This all gives you better navigational cues. We’ll show you five PDF readers for Android that let you read and annotate ebooks to provide you with a better reading environment.

1. Xodo PDF Reader & Editor

Xodo is a feature-rich PDF viewer that lets you read, edit, and annotate ebooks. It comes with a built-in file manager, cloud storage support, and collaboration tools to annotate ebooks and review them in real time. You can fill forms and sign PDF documents How to Sign a PDF: The Best Tools for Electronic Signatures How to Sign a PDF: The Best Tools for Electronic Signatures Need to electronically sign a PDF? Here are the best tools to sign PDF documents from your PC or phone. Read More . It’s also compatible with the latest Adobe Acrobat specifications, which makes annotations consistent with other PDF viewers.

Annotate and View Notes

To create a highlight, tap the center of your screen to bring up the Action Bar. Tap the Annotation Toolbar, then the Highlighter icon. Drag the marker with your finger to the end of a sentence or paragraph to highlight the text. To change the color of the highlight, tap and hold the text to bring the popup menu. Tap Style to change the color, opacity or even annotation type.

If you wish to add a note, tap the selected text, then tap Comment Note to add a comment. Xodo supports many annotation tools including strikeout, underline, link, text, and more. You might also want to enable some options in the Settings screen.

Tap the Hamburger menu and toggle the Continuous Annotation Edit switch. The annotation toolbar will no longer swap with the hand tool, letting you focus on annotating the book. Also, toggle the Copy Annotated Text to Note switch. While adding a note, the selected text gets automatically copied into the annotation’s note.

Export Notes

After marking up a whole chapter, tap the center of your screen to bring up Bookmark icon on the bottom navigation bar. Tap the Annotations tab, then choose Export located at the bottom of the screen. A new document (PDF) will open in a new tab, with a summary of annotations you did on a chapter. Long-press this tab and tap Show in Folder to jump to the file location.

If you’re viewing the same PDF on an app that doesn’t support annotations, you can save a flattened copy of the document. Tap on the Overflow, then choose Save a Copy > Flattened Copy. The flattened copy’s annotations are no longer editable, but you can see the edits in any PDF viewer.

Download: Xodo PDF Reader & Editor (Free)

2. PDF Viewer Pro by PSPDFKit

PDF Viewer Pro is an all-in-one app that lets you annotate, fill forms, sign documents, and edit them. It comes with a built-in file manager, support for cloud storage, and collaboration tools to review edits with your team. The app writes annotations as per standardized Adobe specifications, so you can view them on any device.

Annotate and Export Notes

Open the document you would like to annotate. Tap the Annotation Edit button on the toolbar, then drag a finger to select the text. If you want to change the color of the annotation, tap the selected text and choose a different color from the toolbar.

To add a note, tap the selected text and choose Comment from the toolbar. You can add text annotations, comments with different styles, and callout annotations. Thankfully, the toolbar is not cluttered with a bunch of options. It’s neatly categorized into groups, and you can even drag the toolbar to other locations.

After doing all your markups, tap the Share icon in the toolbar and select an app to share your annotations. You can choose to either Embed or Flatten the annotations. When you embed annotations, they remain editable in other PDF viewers.

You can also share a particular page of the PDF. And the app lets you decide if you want to keep annotations, flatten them, or remove them altogether.

Download: PDF Viewer Pro by PSPDFKit (Free, subscription available)

3. ezPDF Reader

ezPDF is the only Android PDF viewer with embedded multimedia capabilities. The app has a slightly old, skeuomorphic interface, and the red/orange action bar makes the interface non-intuitive. But despite the old interface, the app comes with many useful features. Annotating a document is just the start.

Annotate and Export Notes

The top action bar is always visible while viewing a PDF. It allows you to make all sorts of annotations—adding text, commenting, highlighting, attaching files, creating shapes, and more. The controls are a bit confusing, as some options have an undo button and others rely on the eraser. Tap the Settings icon at the top bar and de-select any options you don’t use to reduce clutter.

To highlight the text, drag the marker to select a desired portion of the text and tap Highlight. To do more with the text you highlighted, tap the AddAnnot option. Here, you can add a note with different colors, attach a file or image, write on a text box, and more.

After you’re done marking up, tap the Annotations List on the action bar and select the annotation types you want to display or export. Then tap the Overflow menu and choose Export. Save or send the file as XFDF, FDF, or plain text. The FDF file format is compatible with Adobe specifications, so you don’t have to worry about annotations disappearing.

Download: ezPDF Reader Free Trial (Free 15-day trial) | ezPDF Reader ($4)

4. PocketBook Reader

PocketBook reader is your virtual library that lets you read ebooks in multiple formats, including PDFs that use Adobe DRM. It enables you to read ebooks in foreign languages with a built-in dictionary and listen to them with its text-to-speech function. The app even includes a barcode scanner to detect metadata, plus much more.

Annotate and Export Notes

To create a highlight, drag the marker to the end of a sentence or paragraph. In the popup that appears, tap Highlight. Then from the color picker box, select the color of your choice. If you marked the wrong text, select the highlighted text and tap Delete.

If you wish to add a note, select the highlighted text and tap Note. Enter your note and tap Save. The note sign will appear on the page. To view or edit the note, just touch the icon. After you’ve marked up as you wish, go to the Reading menu and choose Notes and chapter. Here at the bottom of the Reading menu, tap the Export option.

The note saves in the PocketBook folder as an HTML file. What makes this app unique compared to others is its natural reading settings. At any time, tap the center of your screen to evoke a radial menu. You can adjust brightness, the page display mode, zoom settings, and even create a highlight without going through tedious options.

Download: PocketBook Reader (Free)

5. Moon+ Reader

Moon+ Reader is an innovative app designed to give you complete control over your screen experience. You can fine-tune the screen brightness and tap the screen to effortlessly switch between day and night mode.

In PDF Options, you can change the view mode, increase or decrease the render quality, and enable thumbnail previews on the bottom bar. In Visual Options, you can set the font type, size, alignment, spacing, and more.

Annotate and Export Notes

To have the best experience while reading PDFs on this app, you must tweak specific options. Tap Overflow menu > PDF Options and choose View Mode as Continuous with Render Quality as High. Set the quality to Low if the PDF you’re reading has lots of images.

To create a highlight, drag the blue marker to the end of a sentence or paragraph. In the popup that appears, tap Highlight. You can also underline or strikethrough text with different colors. From the color picker box, choose the color you want to highlight with. Tap Note to add a comment on the selected text.

When you tap Save, a sticky note will appear on the text. After you’re done marking up, tap the Bookmarks button, then Share, and choose to export notes and highlights as TXT or HTML. Do remember that scanned PDFs don’t support any markups. The only option you have is to use OCR on the image The 3 Best Free OCR Tools to Convert Your Files Back Into Editable Documents The 3 Best Free OCR Tools to Convert Your Files Back Into Editable Documents Optical Character Recognition (OCR) software turns printed documents into machine-readable text. Here we show you the best free OCR tools and how they work. Read More , but even then, markups may or may not work.

Download: Moon+ Reader (Free) | Moon+ Reader Pro ($5)

You Can Annotate EPUBs Too

It’s difficult to think critically when you only passively consume information. Deep work requires you to think harder beyond the simple context. Creating annotations is your first step for developing a knowledge-based mindset because you begin to establish connections with different ideas.

The Android PDF apps discussed here will help you become a better reader and thinker. But you can annotate EPUB files too. Some excellent EPUB reader apps lets you annotate and take better notes. If this interests you, check out the best Android ebook reader apps with amazing annotation features 6 Android Ebook Reader Apps With Great Annotation Features 6 Android Ebook Reader Apps With Great Annotation Features Want an ebook reader app for Android with great annotation support? We have several excellent options for you to choose from. Read More .

Explore more about: Android Apps, Ebooks, Note-Taking Apps, PDF, PDF Editor.

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  1. Trisha Mandigo
    January 1, 2019 at 1:45 am

    All I can see in Playstore is WaveEditor and it looks complicated! Can you point me in another direction or is this what I need to record with my Samsung tablet and my blue yedi microphone?

  2. Steve
    August 2, 2017 at 2:09 pm

    PDF Max - Terrible recommendation - ignore. Very buggy. Spent 2 hours annotating a pdf. Did Cloud upload + it crashed loosing all work. Tried again + the google error says the software isn't set up to work with google drive.
    Poor recommendation, MUO. Won't be following your reccs again...

  3. Fred Karl
    March 3, 2017 at 11:51 am

    Thanks for the helpful review. Unfortunately, one important criterion you left out is the ability to upload and download pdf files from custom locations on the Internet, such as computers, NAS drives, and the like.

    I keep my large library of pdf books and articles on a NAS drive and have no trouble accessing it directly from anywhere in the world using PDF Expert on an iPad. But I tried PDF Max and Adobe Reader, and neither has the same capability. Both limit you to a pre-given set of cloud services. PDF Max has four (Google Drive, etc.), and AR only one (a paid Adobe service). I was able to work around this by using another app to download a file, open it in AR, and upload the annotated version, but I'm still looking for a single-app solution for Android.

  4. maggie
    July 19, 2016 at 6:09 am

    Thank you for recommendation. I use PDF Editor frequently, home, office and on the way to visit my client. So i need cross-platform software to help me edit PDF file. I use #PDFelement software to edit PDF document on Mac, Windows & iOS. It's very helpful. Now Android is really what i need. I will try it. Thank you.

  5. David C.
    July 14, 2016 at 11:34 pm

    That is, PDF Max is doing that to me - telling me the PDF files are invalid.

  6. David C.
    July 14, 2016 at 11:33 pm

    Keeps telling me my PDF's are an "invalid file".
    They open fine with other PDF viewing and annotating apps.

  7. Kayla
    May 16, 2016 at 6:58 pm

    While Adobe is free to download, it is worth noting that it is not at all free to create and edit PDF's. You can view PDF's for free, but in order to edit or create you have to subscribe for $9.99/month.

  8. Anonymous
    November 9, 2015 at 3:18 pm

    Thank you very much! I am looking for an app that my music students can use to do homework (in pdf form). Sometimes, this requires writing words and other times it requires writing notes and other musical notation. One of my students uses Notability to do this, but at least half of my students have Windows or Android tablets. Will PDF Max do this? Thank you again!

  9. Anonymous
    October 2, 2015 at 11:32 pm

    Nice commentary ! I Appreciate the information . Does someone know if my business would be able to grab a fillable a form form to work with ?

  10. Anonymous
    June 15, 2015 at 9:58 pm

    Are there any of Android PDF editing apps that edit files directly on Google Drive?

    Neither Xodo or PDF Max do this - both make local copies, and the re upload the results (with a new / different file name).

    • Anonymous
      August 4, 2015 at 2:19 am

      To get around this I use Autosync for Google Drive. With the free version you can auto sync any local folder with Drive. The paid ($5 I think) version gives you all the sync functionality of the desktop Drive app.

  11. Derek Everette
    May 28, 2015 at 4:20 am

    Great article. Just tried PDF Max and it's the best. It can annotate easily and has One Drive support (opens the pdf and re-saves to cloud when done). Just what I needed!

  12. Mohamed
    May 25, 2015 at 4:09 am

    I have an application forms pdf
    what is the best Android APP to use

  13. sarah
    May 2, 2015 at 8:00 am

    my pdf reader (on my tablet) was working like a dream...until i updated it! its now lost all its functions and seems to be pretty much useless? so strange and incredibly infuriating.

  14. Anonymous
    April 24, 2015 at 9:24 pm

    What about pdfannotator?

  15. James
    February 3, 2015 at 9:57 pm

    Too bad you did not review Xodo. It is a great editor and is free and without ads. Better than any reviewed here.

    • Justin Dennis
      February 17, 2015 at 10:44 pm

      i'll have to check it out, thanks for the recommendation!

    • Giovanna
      April 23, 2015 at 7:32 pm

      I confirm. And it is the only one with which you can fill editable pdf, save them and, most important of all, make them visible and printable by every printer

      With the others, some text doesn't appear in the phase of printing

    • GOPESH
      September 2, 2016 at 9:09 am

      I agree with you. Xodo docs is the best.

  16. alan
    February 1, 2015 at 2:39 am

    Foxit?

    The latest version of Adobe Reader often hangs while making annotations.

    • Justin Dennis
      February 17, 2015 at 10:43 pm

      I tried Foxit out, as I said in the conclusion, but it didn't really work for me. Haven't had Adobe Reader hang for me (yet) though.

  17. frotaadriano
    January 30, 2015 at 9:37 am

    Do you know Mantano?
    It's better than those ones.

    • Justin Dennis
      February 17, 2015 at 10:43 pm

      thanks for the recommendation! I'll be sure to check it out.