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PDF Max 4 - The PDF Expert!

PDF Max 4 - The PDF Expert!

5,000 - 10,000 downloads

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PDF Max 4 is a must-have app for reading, annotating or editing PDF documents on your Android. It allows you to mark up documents with highlights and handwriting, insert text and stamps, sign and even manipulate PDF pages. Ultimately, PDF Max 4 is the premium choice for filling out PDF forms right on your Android. Moreover, the advanced zoom-in handwriting feature is an unmatched tool to help you fill non-interactive forms or take notes like never before. With PDF Max 4 - There is no substitute!

Since PDF Max 4, the app requires permission(s) as follows:
- Read Phone Status and Identity - required to terminate the read aloud progress when there is an incoming call.
- Find/Use accounts on the device: No longer required since v4.1.0.

PDF Max 4 Features:

- Fast PDF Rendering with large PDF support
- Smooth vertical scrolling - allow you to scroll through your entire PDF document smoothly and efficiency.
- Open documents in multiple tabs.
- Multi-purposes SideBar includes everything you need to skim through your documents like never before: Page Thumbnails, PDF Outlines/Bookmarks, Annotation List & Search Panel.
- PDF Text to Speech
- Advanced PDF Text Reflow: This Amazing Text Reflow feature that helps you read your PDF easily with any kind of PDF. Forget the tedious pan & zoom steps, you now just enjoy reading your documents.
- Smart Zoom: Double-tap on text blocks and PDF Max will zoom the touched text block to fit the screen. Simple & efficient reading.
- Friendly & Easy to use User Interface

- Text markup: Highlight, Underline, Strike out & Squiggle
- Unlimited threaded comments (notes) attached to any annotation.
- Create VOICE ANNOTATIONS: Record and embed voice annotations within the PDF document.
- HANDWRITING with Advanced Zoom-In Writing feature
- Eraser tools to manipulate your handwriting
- Shape tools to draw Line, Arrow, Rectangle & Oval with intelligent snapping
- Rich format Freetext tool to type over PDF pages
- Stamp tool to insert Predefined, Standard Business Stamps & Custom Stamps
- Signature tool to manage and insert your signatures
- Undo/Redo function to correct your mistake

- Manage PDF Pages (Insert, Copy/Cut/Paste, Reorder & Delete PDF Pages)
- Manage PDF Outlines (Table of Contents) , PDF Embedded Links

- Support Text field, checkboxes, radio buttons, dropdown list, buttons & date-time fields
- Support JavaScripted-powered PDF forms
- Support AcroForms & Static XFA Forms
- Zoom-in writing to fill out scanned/non-interactive PDF forms
- Multiple signatures support, plus one-time signature for customer

- Create and manipulate PDF Outlines
- Create and manage PDF Bookmarks
- Create and edit PDF Embedded Links

- Auto syncing with Dropbox, Box, OneDrive & Google Drive with offline support
- Copy/Move PDF documents between cloud storage services
- Built-in PDF Library management

- Bookmarks management with ability to export as PDF Outlines
- Email or Print PDF via Google Cloud Print
- Auto or manual saving
- PDF documents/forms modified by PDF Max are compatible with Adobe Acrobat standard

We can't bring more and better features without your help, so please rate us five stars to encourage faster updates!

Follow us on Facebook at for supports and updates, and feel free to email us at for any inquiry. Now, Let's go annotate!

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Recently changed in this version

- Supported Google Drive two-factors authentication
- Improved support for big PDF files
- Removed Use Accounts/Credentials permissions
- Targeted Android 4.4 Kitkat API level - users who use Kitkat and higher will get more features soon.

Enjoy the world's best PDF app for Android!

Comments and ratings for PDF Max 4 - The PDF Expert!
  • (58 stars)

    by Danny Campbell on 19/08/2014

    I use it to annotate PDF files. No major problems for me. And those of you who don't read the descriptions, this is more than a PDF reader. Read again.

  • (58 stars)

    by Sean Methot on 12/08/2014

    Crash crash

  • (58 stars)

    by Michael Snowden on 05/08/2014

    I can't print or view my annotations on my computer. The app does every thing I need but if I can't print or transfer the doc to my computer with the changes visible and printable the app is not practical. There are other free apps that do less but allow for this transfer of the changes that are more useful for business use. If it were a free app I would give it 3 stars largely because it crashe

  • (58 stars)

    by Sara Bannerman on 30/07/2014

    This app is perfect except it crashes frequently losing all your markup. You have to manually save frequently. Very frustrating. Otherwise great! Please fix the crashing problem-it's bad. Update:even saving constantly doesn't necessarily work. Saved after every edit and still LOST EVERY EDIT when app crashed as it tried to upload to Dropbox. Awful. PLEASE FIX!!

  • (58 stars)

    by Jake Metz on 29/07/2014

    Very good app for study purposes

  • (58 stars)

    by HOMAYOUN KHORRAM on 21/07/2014

    I Can't find a word to appreciate this software enough . It helped me to fill in an 26- page application form easily .

  • (58 stars)

    by Ken Sauve on 17/07/2014

    After installation it won't even open a pdf. Just keeps showing invalid file message. Acrobat opens them no problem and offers almost the same "promised" funciotionallity for free. Waste!!