PDF Expert
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    Contents
    • Using PDF Expert
      • Getting Started with PDF Expert
      • Highlight, underline, and strikethrough text
      • Text comments, shapes, and pop-up notes
      • Insert stamps to PDFs
      • Customize text and annotation colors
      • Draw on a PDF file
      • Use stickers in PDF Expert for iOS
      • View, search, and remove annotations
      • Export Annotation Summary
      • Content Selection Tool
      • Edit text in PDF files
      • Work with images in PDFs
      • Work with to-page and to-web links
      • Remove sensitive content
      • Supported forms and fields
      • Fill out PDF forms
      • Sign PDF documents
      • Enhance and adjust your scans
      • Convert scanned documents into text (OCR)
      • Scale and measure drawings
      • Polygon and polyline shapes
      • Red Line tools
      • Convert images, MS Office and iWork files to PDF
      • Export PDFs to other formats on Mac
      • Convert PDFs to images, Word, Excel, PowerPoint, Text files on iOS
      • Reading mode
      • Select your way to scroll pages
      • Enable the two-page view
      • Zooming modes in PDF Expert
      • Jump to a specific page
      • Bookmark pages
      • Create a table of contents in a PDF file
      • Turn on the Night or Sepia theme
      • Read PDF text out loud
      • Keep your device awake while reading
      • View two PDFs side by side
      • Add page numbers, bates numbers, and text
      • Use Smart Search
      • AI Chat with PDF
      • Page number indicator
      • Create a new PDF file
      • Add, delete, and rearrange PDF pages
      • Rename files and folders
      • Recents and Favorites
      • Sort files and folders by name, date, and size
      • Password protect PDFs
      • Save the file as flatten
      • Reduce the PDF file size
      • Merge PDFs
      • Manage annotated pages
      • Move files and folders
      • Switch between the Grid and List views
      • Mark files and folders with color tags
      • Open a file in PDF Expert
      • Organize your files with Inbox
      • Page Resize
      • Access your device files via the Files app folder
      • Sync your PDF files through web clouds
      • Sync a folder from cloud storage
      • Connect to Mac or PC via SMB
      • Set up sync with Mac via SFTP
      • Time Capsule setup
      • Share files via the Share button
      • Transfer files between iOS device and desktop using Wi-Fi
      • Transfer files from Safari to PDF Expert for iOS
      • Transfer files between iPad and iPhone using WebDAV
      • Share text with other apps
      • Share files from cloud via a link
      • Transfer files between PDF Expert and your Mac using a USB cable
      • PDF Expert Widgets
      • Turn on the Dark Mode
      • Work with tabs on your iPad
      • Customize the toolbar in PDF Expert for iOS
      • Create your own toolset in PDF Expert for iOS
      • Make PDF Expert your default PDF viewer on Mac
      • Open email attachments in PDF Expert
      • Keyboard Shortcuts
      • Make presentations with PDF Expert and FaceTime
      • Full Screen Mode on Mac
      • Getting Started with Tools tab on Mac
      • Presentation Mode
      • Improve your workflow with Sidecar and Camera Continuity
      • Change the app's language on iOS
      • Convert PDF to black and white on Mac
      • Supported Scripting in AcroForms (Adobe Acrobat forms)
      • Supported Scripting in XFA (LiveCycle Designer forms)
      • URL schemes
    • Troubleshooting
      • PDF Expert quits or doesn't open
      • PDF Expert freezes
      • All files in the app look blank
      • Annotation tools do not work
      • Printing issues on Mac
      • Corrupted files
      • Sync issues
      • Restore accidentally deleted files
      • File cannot be opened
      • Annotations made in PDF Expert are not displayed correctly in a third-party app on iOS
      • File loads slowly
      • Garbled text
      • AI Chat with PDF issues
      • Connection issues on iOS
      • iCloud files don't stay downloaded
    • Billing & Subscription
      • How to get PDF Expert
      • Set up an account for cross-platform app usage
      • How to get PDF Expert Premium
      • Check and manage your subscription
      • How to cancel the free trial
      • The PDF Expert License FAQ
      • The “trial expired” message appears after a purchase
      • Is PDF Expert available on Windows?
      • The PDF Expert Billing FAQ
      • The difference between PDF Expert 2 and PDF Expert 3
    • Contact us

    Troubleshooting

    PDF Expert quits or doesn't open

    On some occasions, PDF Expert might have problems with performance resulting in crashes - here are some troubleshooting steps to try: PDF Expert crashes Mac iOS First, please reboot your iPhone or your iPad. Another temporary solution would be the following: Try disabling iCloud for PDF Expert: open iOS settings >  iCloud > iCloud Drive > d...
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    PDF Expert freezes

    If PDF Expert doesn’t respond or freezes, select your case and follow the steps to solve this issue straight away, or get help from our Support Team. If the app freezes on a certain tool or action Mac iOS Try restarting the app by clicking Force Quit in the Apple menu or on the app's icon in the dock and if it doesn't help, send us an email to rdsup...
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    All files in the app look blank

    There might be situations when your files suddenly appear blank - though these cases are rare, here's how you can try fixing the problem and help us with the investigation if needed.  Mac OS  iOS Please make sure the file is fully loaded - you might also restart the app to make sure this is not a temporary glitch. If nothing changes, please send us ...
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    Annotation tools do not work

    There might be cases when some annotation tools, like Highlight, Underline, or Strikeout don't seem to work - the reason might be file-specific. In order to check that, you can do as follows: Mac iOS Try selecting the text in your file - if it can't be selected, or your file is not searchable, your file is most likely a scan or an image that was sav...
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    Printing issues on Mac

    Sometimes you might face printing issues while working in PDF Expert - while we completely depend on the system printing and do not have much influence over how it works, there could be several troubleshooting options for each case.  1.  Follow the steps to fix file-specific issues Launch PDF Expert and open your PDF. Go to the File section. Select ...
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    Corrupted files

    Mac iOS In case the file can't be opened and instead you see the message about it being corrupted, these are the first aid steps for your PDF:  Restart your app by clicking Force Quit in Apple Menu or on the app's icon in the dock. After this, launch the app again and check if the file can be opened. Try opening the same file in the Preview app and ...
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    Sync issues

    If you have sync issues in PDF Expert for iOS, there are some steps you can take to troubleshoot the problem.  Step 1 First, please make sure you have a stable network connection. Try disabling the Wi-Fi, enabling it again, then open PDF Expert > Synced folder > pull down to refresh and trigger the sync process. Note:  The background sync is n...
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    Restore accidentally deleted files

    Mac iOS Please note that since macOS doesn't have a folder structure like Windows, our app doesn't store any of your files - they are all stored locally on your Mac or in the cloud. You can check whether your file is in the Bin. For this, click the Bin icon in the bottom right corner. If the needed file is here, simply drag & drop it out of the ...
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    File cannot be opened

    If you have issues with opening one of your files in PDF Expert, please see the list of the supported file formats in PDF Expert User’s Guide available here. Note: PDF Expert supports filling out AcroForms created in Adobe Acrobat or other similar apps and Static XFA forms created in Adobe LiveCycle. Dynamic LifeCycle (XFA) forms are not supported b...
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    Annotations made in PDF Expert are not displayed correctly in a third-party app on iOS

    If you open the PDF file, which was annotated in PDF Expert, using a third-party app (e.g. some cloud storage application or email client that uses a simple PDF viewer) and do not see your edits, or they are displayed differently, this means that the third-party app you use might not support all the advanced features supported by PDF Expert and this...
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    File loads slowly

    If the PDF file you're trying to work on in our app somehow looks blurry or has a checkered background instead of displaying the text, you can try several options. Mac iOS First, keep the file open for a while to see if it loads in the end. Check if the file contains vector graphics. These are either diagrams and graphs or text that doesn't look blu...
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    Garbled text

    If the fonts do not display correctly, look garbled, or change to another font while editing, this might be because the font is not supported by the system and thus by our app. It can also indicate that the file has text encoding issues. If you encounter any of these:  the fonts change when you try editing the text, or look garbled the text is displ...
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    AI Chat with PDF issues

    Since we need to establish a stable connection to work with AI-based tools, Chat with PDF also requires several precautions that might influence the way it operates.  If something doesn't work, please:  Disconnect from any VPN and/or disable your Firewall if they are enabled. To disable the Firewall on your Mac, choose Apple menu > System Setting...
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    Connection issues on iOS

    If you're experiencing issues with adding cloud services or network connections, please follow these steps: Disconnect from the cloud service. Relaunch PDF Expert. Reconnect to the cloud service or the server. Additionally, please ensure that in your iOS Settings under PDF Expert, the 'Local Network' option is enabled.  If you have issues with iClou...
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    iCloud files don't stay downloaded

    In case that you have a lot of iCloud files in the app, you could have faced this issue before - the files need to be downloaded again after some time.  This is triggered by the system when you lack free space on your device - the system actually offloads the files to optimize the app's functioning.  There's a way to fix the issue:  Make sure to fre...
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    Features

    • Edit PDF
    • Fill PDF
    • Sign PDF
    • Merge PDF

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