PDF Expert by Readdle

PDF Expert by Readdle

By Readdle Inc.

  • Category: Productivity
  • Release Date: 2013-12-03
  • Current Version: 6.6.13
  • Adult Rating: 4+
  • File Size: 148.65 MB
  • Developer: Readdle Inc.
  • Compatibility: Android, iOS 10.0
Score: 4.5
From 34,581 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.



  • Quality declining

    By Carenac
    I have been using this app for about 3 years now, l recently upgraded my phone to an Iphone Xs, and since then, this app has been crashing on me quite often. It is frustrating since l depend on it to do my job and it’s slowing me down. I hope it gets fixed soon, otherwise, l may need to switch to a different more efficient application.
  • Almost Perfect (Highlighter Issue)

    By UC Berkeley Golden Bear
    I just started using PDF Expert on my iPad with Apple Pencil, and I'm LOVING it so far. So far, I've just had one problem: for documents that cannot be successfully OCR'd, the current pen tool (when used as a highlighter by lowering the ink opacity) applies the color ABOVE the non-OCR text, which hides/mutes the black text more than I'd like (even on 25% opacity). I've noticed that other apps (e.g. Scanbot and OneNote) can apply the highlighting BELOW non-OCR text so that the text is on the top above the highlights. Are there plans to include this dedicated highlighter marker functionality (that applies highlighting UNDER non-OCR text)? This would make PDF Expert the perfect app for me! Thank you so much!!!
  • Open on all my devices every day

    By Joel D. Arnold
    This is one of the most useful apps I have. The feature set is extremely strong and the cross device integration is excellent. Support is also top-notch with quick and helpful responses. The most recent upgrade was one of the few things I suggested and now they’ve taken care of that. If you work with PDFs you should get this app. Plain and simple. Actually, even if you don’t work for PDFs you should still consider it. There’s a good chance that you haven’t used them because it’s been such a pain in that with this great software you’ll start using them now. Furthermore, if you have an iPad Pro this app should come installed. It’s that good. I can promise it will be on your front screen (probably dock) and you will be using it every day. Features I specially love: (1). The ability to easily drag and drop images to re-order or add to a PDF. (2) The ability to quickly and seamlessly move between devices. (3) The ease of annotating with an Apple Pencil, using highlight, various colors, opacity, and pencil width. It’s excellent. I always end reviews with suggestions for improvement. These guys have me stuck because it’s just that good. Only two: 1) A full range of color selections for highlights and pen. In other words, a full color palette with infinite choices rather than the pre-selected colors they give now. 2) Using split screen (iPad) doesn’t quite work right. If you change orientation or move the slider bar between the apps it will usually close the document. That can sometimes be a legitimate pain. That’s it. Thanks for the excellent app guys and your amazing work! Fantastic update.
  • Runs like crap.

    By TSMuhler
    The app freezes and needs an update. It is no longer useable

    By Hazazi hazazi
    Definitely the most useful app on my iPad. Love this app and it’s my daily basics but one side it’s really lacking behind is annotation, poor wrist detection, writings sometimes just stops(I really hate when this happens and it happens a looot), very limited choices of pen colors and horrible handwriting. All features that I get from other cheap annotation apps! It’s shame such a great app doesn’t have good features for writing. Since many use Apple Pencil lately this feature need to be priority. Please you guys need to fix this issues. Edit: this app is getting terrible with Apple Pencil poor wrist direction and letters disappear while you write it’s time to start finding better options! If you’re Apple Pencil user don’t waste your money on this.
  • Excellent ✨

    By Mm750352
    One of the best apps that I have ever purchased because it works not only on my iPhone but also on my pc ; a really complete professional PDF app for both pc and iPhone,thank you Raddle 👌🏻.
  • Freezing constantly on iPad Pro 11.

    By Quentin Biles
    The app will often freeze up and hang when opening on iPad Pro 11. I will have to either quit the app or wait for it to crash before normal function resumes. This has happened more and more lately, and it is starting to get annoying!
  • Not working like advertised

    By glrogers67
    I downloaded this app and paid for the capability to edit PDF’s, and for some reason I can edit just a few pdf’s. I received a pdf format from my attorney, and I can’t edit any of the text like it states. All I can do is highlight with the Apple Pencil and insert text boxes. And to top it off looks like I was charged $9.99 twice!
  • Mostly great!

    By Old Red Eyes
    Please add an option for one continuous (vertical) scrolling doc. Thanks for great product.
  • Misleading....

    By Whisleybreathehtx
    After paying $10 for an app they want an additional $10 for the pro features. How does a basic app cost $10? I am so mad I paid for this, if I known it was $20 for all the features I would have gone another route