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PDF Connoisseur – Annotate, Sign, Image to Text(OCR) and Text to Speech(TTS)

By Kdan Mobile Software LTD

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The PDF Connoisseur is your all-in-one office application for iPhone and iPad offering a rich selection of text and page editing/annotation tools, secure file transfer & backup via multiple cloud services as well as file conversion capabilities and iOS 8 special features including an integrated document scanner with auto rectangle detection, OCR and QR code recognition.

[iOS 8 Specials]
•iCloud Drive - store files of any kind of format, access and work on your files using multiple devices including your iPhone, iPad, iPod Touch, Mac or PC
•Document Picker - access, update and edit files from multiple apps
•Touch ID - secure your files with Apple's biometric fingerprint authentication technology; available for iPhone 5s, iPhone 6, iPhone 6 Plus, IPad Air 2, and iPad mini 3.
•Image detection - recognizes rectangles in your scans for accurate post-adjustments
•Photo extension - transfer images from your photo library to PDF Connoisseur and convert them to a single PDF file
•Action extension – use “Export” function to transform webpages or files to PDFs directly from your Safari browser and other apps

[New Voice Reader (Text-to-Speech TTS)]
•Adjust the TTS voice speed
•Use continuous/discrete reading mode to either let the whole document be read out or single lines
•36 voices in 26 languages supported

[Document Scanner with OCR]
•Make continuous scans and adjust afterwards
•Export scanned images as PDF files
•QR code recognition supported
•Optical Character Recognition (OCR) for digitizing printed texts included
•Support to convert scanned documents (text & images) to searchable PDFs or TXT files
•Support and recognize six languages: English, French, German, Chinese, Japanese and Korean

[File Conversion]
•Convert MS Office files, Apple Productivity Apps files, clipboard contents, photos and image files, and other file formats to PDF files

[File Manager & Viewing Mode]
•Fast and stable rendering performance provided
•Display video/audio files added to PDF documents

[File Annotation, Markups & Form Filling]
•Highlight and markup text, add sticky notes, text boxes, shapes, or use freehand drawing etc.
•Audio notes supported
•"Flatten" PDFs for easier sharing
•Insert images/hyperlinks to PDFs
•Fill out PDF forms & sign PDF documents

[Page Editing]
•Rotate, rearrange, extract, add, delete (single) PDF pages
•BOTA list - displays a summary of all annotations applied to PDF files
•Export all annotations via email

[File Transfer & Backup]
•Store and secure your files on Dropbox, OneDrive, Google Drive, Evernote, MyDisk, SugarSync and Box
•File transfer via FTP and WebDAV client
•File backup via WiFi, iTunes, USB and Open-in feature

[Kdan Cloud – Sign up for FREE]
•Sign up now and get 500 MB of free space on Kdan Cloud!
•Subscribe to our premium cloud services and further optimize your productivity with more tools!

[Subscription plans]

•Kdan cloud: $2.99/month or $9.99/year
•Kdan Deluxe Business Pack: $5.99/month or $29.99/year


•Subscriptions will be charged through your iTunes account at the confirmation of purchase
•Your subscriptions will automatically renew unless cancelled at least 24 hours before the end of current subscription period. Your iTunes account will be charged for renewal within 24-hours prior to the end of the current period, for the same duration and at the current subscription price
•You may manage your subscriptions in your iTunes Account Settings after purchase.
•No cancellation of the current subscription is allowed during an active subscription period.

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What's New in Version 3.1

Thanks for waiting. We are thrilled to share several new features and some exclusive PDF functions in our PDF app. Enjoy!

The New “My Markup” features
•Extract & Back up – extract annotations from PDF files and store them separately as XFDF files in “My Markup” folder
•Export & Share – send out XFDF files to share your annotations and comments
•Restore & Import – import annotations to PDFs and help you focus on what matters to you.

New Design for Document Scanner
•Auto edge detection – detect the borders of your document in real time while scanning
•Image processor - add magnifier when adjusting edges
•Scanned project management – easily manage your projects in thumbnail viewing mode
•Scan resolution options – adjust the quality of scanned images to High, Standard and Low

Enhanced OCR Performance
•OCR/PDF conversion - support batch processing that lets you automatically process a series of images.

Smooth PDF reading
•Support to play voice reader(Text to Speech) in the background

Enhanced PDF annotation
•Hyperlink – tap to move around the hyperlink box
•Freehand writing – add undo/redo button
•Signature – write on PDFs smoothly as if you are signing on paper
•Textbox - support to copy/paste text to textbox and adjust width of textbox
•BOTA list – add annotation filters

Enhanced File Manager (for iPad only)
•File name display – file name is displayed in 2 lines
•Rename documents – tap the title of your files to rename files directly

Adonit Stylus Integration
•Connect with your Jot Touch for a better handwriting experience.

iCloud Drive/Document Picker
•Support to sync edited files imported from iCloud Drive or Document Picker

Other performance enhancements and stability improvements


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Customer Reviews

Excellent for PDF heavy users!

I have to read tons of PDF files everyday. Since I use this app, it does make my mobile reading experience much better than ever. I just got a stylus recently and it's really productive when used with this app.

great app

Have had no issues with it! Very easy to transfer files via wifi connection and the cloud. Now I have all the information I need at my fingertips and use it all the time at work.


I have used the PDF reader on my PC and now I am overjoyed to now have the ability to use my phone to listen to a file! My time is used well when I am driving and waiting! Thank you!

PDF Connoisseur – Annotate, Sign, Image to Text(OCR) and Text to Speech(TTS)
View In iTunes
This app is designed for both iPhone and iPad
  • $9.99
  • Category: Business
  • Updated:
  • Version: 3.1
  • Size: 67.7 MB
  • Languages: English, Czech, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5, iPhone 6, and iPhone 6 Plus.

Customer Ratings

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Top In-App Purchases

  1. Deluxe Business Pack$29.99
  2. Deluxe Business Pack$5.99
  3. Kdan Cloud$2.99
  4. Kdan Cloud$9.99