PDF Expert by Readdle

PDF Expert by Readdle

By Readdle Inc.

  • Category: Productivity
  • Release Date: 2013-12-03
  • Current Version: 6.1.9
  • Adult Rating: 4+
  • File Size: 135.89 MB
  • Developer: Readdle Inc.
  • Compatibility: Requires iOS 10.0 or later.
Score: 4.5
From 16,399 Ratings


PDF Expert 6 is an essential app for anyone who reads, highlights, signs and fills out PDFs on their iPhone and iPad. With an additional in-app purchase PDF Expert 6 acquires the unique superpower to edit existing PDF text, replace images and hide sensitive data. “PDF Expert is one of my must-have iPad apps and a desktop-class PDF reader”. – MacStories.net “I was blown away at how easy the app is to use”. – MakeUseOf “The best app for managing, editing, and reading PDFs on your iPad”. – The Sweet Setup *** WITH PDF EXPERT 6 YOU CAN *** HIGHLIGHT AND REVIEW PDFS • Mark important information in books, journals or documents with the first class annotation tools: highlight, underline, strikethrough and others. • Insert predesigned stamps such as Approved, Not Approved, Confidential and more. • Create diagrams and schemes using shapes such as arrows, circles or rectangles. FILL FORMS • Work with static PDF forms created in Adobe Acrobat. • Fill out any PDF forms with interactive fields such as text fields, checkboxes and radio buttons. SIGN DOCUMENTS • Use e-signatures to sign contracts and agreements on the go. • Sign documents with signatures synchronized across all your devices: Mac, iPhone, iPad. DRAW WITH YOUR FINGER OR APPLE PENCIL • Draw with your finger or Apple Pencil to make handwritten notes or highlight text in scanned books. EDIT OUTLINES • Edit outlines in a few taps to structure your data and for better navigate through the file. PROTECT CONTENT WITH PASSWORD AND ENCRYPTION • Restrict access to PDF Expert with a password. • Protect your files from unauthorized reading with a password. • Enable iOS Data Protection to encrypt everything while your iPad or iPhone is not in use. WORK IN THE CLOUD • Connect to other document storage providers like Dropbox, iCloud Drive, Box, OneDrive, Google Drive etc. Work with files right in the storage and all edits will be saved there without downloading the document. • Enable 2-way sync with storages to provide the continuous work with documents among all devices. CREATE NOTES • Add comments to the texts you read using sticky notes and drawing tools. MAKE BOOKMARKS • Make Bookmarks when it comes to intuitive navigation through PDF files. READ PDFs WITH EASE • Quickly open PDF documents from email, the web, or any app that supports “Open In…” • Enable full text search, scroll, zoom in and out. • Choose Single Page or Continuous scroll mode. • Use Text to Speech feature to hear the selected text read out loud. *** WITH PRO FEATURES OF IN-APP PURCHASE YOU CAN*** With additional in-app purchase you can have the unique superpower that allows you to edit PDFs. New features come as an additional in-app purchase for pros. EDIT PDF TEXT • Edit or modify existing text. The font, size, and opacity of the original text are automatically detected, so you can make edits easily. EDIT PDF IMAGES • Easily add, replace and resize images in your PDFs. Or change a logo or a graph. PDF Expert will handle those edits easily. ADD LINKS • Now linking any part of the text to a different page or even a website is fast. Moreover, links can be added to the images. REDACT SENSITIVE DATA • Using the Redact feature you can permanently erase or hide any sensitive information in your PDFs. PDF Expert is also available in the Mac App Store. It has been voted “App of the Year Runner-up” by Apple.



  • Awesome

    By shawsome.brian
    I use PDF expert multiple times every day at work to shuffle pages around, combine PDFs, and sign them. The stability of this app merits praise. Every single other part of my workflow has broken down at one point or another, but PDF expert has never crashed on me. Even working inside of 170-200 page PDFs with complicated formatting. The ability to keep folders synced in the background is super handy, and it works great in split screen. The “Edit Text and Images” upgrade is well worth the price. I’d love it if Readdle could add a page cropping tool next. Especially one that considers Trim / Bleed / Registration and other standard printers’ marks.
  • Horrible functionality

    By Jamrock21
    Have any of these developers actually tried to edit a PDFon a mobile device with this thing? If they did they would remove this from the App Store. I almost smashed my phone from frustration. REFUND
  • PDF Expert

    By fisika
    Excelente herramienta
  • Great app

    By Austin0977
    Use it everyday, works well. Great app
  • Stop bothering me for Reviews!

    By Shaw417
    Why does an app I PAID FOR interrupt my work flow to ask me to write a review... you asked for it.
  • Great PDF app

    By JBFLY
    Full document viewer, organizer, editor. Changes the way I use my iPad. Definitely the best PDF app I have used on iOS. Highly recommend for people who work extensively with PDF files.
  • Worked for a while for Large Books but not anymore. Crashes helplessly

    By Joy-boy
    Crashes each time I open large PDF book. This is persistent issue. I was fixed for a while but again crashes each time opening a book of couple hundred MBs. I respect the efforts developers put it but it is useless for me if it cannot open books. This issue old I raised it more than a year ago and instead of getting better it's getting worse. I hope developers are listening. Otherwise 5 star if you are limiting to small sized PDFs.
  • Glad I upgraded ! Review update 1

    By Mauijoe
    Jan 2018 update Completely worth the upgrade cost. Does everything I need to do on biz trips and edit / signoff on all PDFs. Use this app every week and without the app my work could not be achieved. Ability to edit, add, remove pages, combine files- app does it all.
  • Great app for learning languages, especially for JW’s

    By O. Jonathan
    I have been learning chinese for the past 2 1/2 years. This app has been a huge help because it remains so easy to take notes, catalogue, share and open in other apps when necessary. I also really appreciate all the features to make annotations in publications so I can make certain information stand out after I have studied it.
  • Trying to use it to test web page edits

    By STMRadio
    Am learning how to transfer edit changes on a web page to PDF Expert to see if revised code works. Had to do this when I discovered “refresh page” in Safari wasn’t always refreshing its cache, so edits that should have worked failed. Lots of wasted time. But I am having one problem, when accessing iCloud Drive, PDF Expert sometimes freezes, and I have to reboot the iPad to unfreeze it. I will try the wifi connect to my desktop next, maybe that will be more reliable. Something about a WebDav (?) too. Lots to learn. When I turned wifi drive on the wifi help won’t open anymore, just says Internal Error.