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PDF Editing Issues

How to Fix Missing Underline Markup Tool in Acrobat Reader for iPad

Adam DavisAdam Davis Oct 19, 2026 868 views

Question details

The user is unable to locate the underline markup tool in Acrobat Reader for iPad after a recent application interface update.

How to Fix Missing Underline Markup Tool in Acrobat Reader for iPad
Product
Adobe Acrobat Reader
Device & OS
iPadOS
Scenario
Annotating and marking up PDF documents on an iPad.
Observed behavior
The underline markup feature has disappeared or changed locations unexpectedly due to application interface layouts updating or reverting.
Before you start

Ensure your Adobe Acrobat Reader app is fully updated via the App Store, as missing features are sometimes restored or moved to a permanent location in subsequent patch releases.

Solution 1Recommended

Navigate the Updated Acrobat Interface

Adobe frequently updates its mobile interface. Familiarizing yourself with the new layout is often the quickest way to find relocated markup tools.

Recent updates to Adobe Acrobat Reader on mobile platforms have drastically changed the user interface. Tools that used to sit on the main toolbar might now be nested inside secondary menus or grouped under general commenting features.

1
Open the PDF document

Launch Acrobat Reader on your iPad and open the PDF file you wish to annotate.

2
Access the Commenting menu

Look for a floating action button (often a pencil icon) or tap the 'Comment' tab on the newly redesigned bottom or top navigation bar.

3
Expand the markup tools

If the underline tool is not immediately visible, tap the 'More' icon (three dots) or swipe the toolbar to reveal hidden text markup options, including the underline tool.

Navigate the Updated Acrobat Interface
Provide Feedback to Adobe: If the tool is completely missing in your specific build, Adobe relies on user feedback to refine the new UI. You can submit your feedback directly through the app settings to request the tool's return.
Edit and Annotate PDFs Easily

Use WPS Office to Underline and Annotate PDFs

If changing interfaces in Acrobat Reader disrupt your workflow, try WPS Office. It features a stable, user-friendly PDF editor where underlining, highlighting, and commenting are always straightforward and easily accessible.

  1. 1. Open your PDF in WPS: Download WPS Office from the App Store, launch the application, and open your PDF document from your local storage or cloud drive.
  2. 2. Access Annotation Tools: Tap the 'Tools' menu at the bottom of the screen and select the 'Annotation' tab to reveal all available markup options.
  3. 3. Select the Underline Tool: Tap the 'Underline' icon, choose your preferred line color, and simply drag your finger or Apple Pencil across the text you wish to underline.
  4. 4. Save and Share: Tap 'Done' to apply the annotations. Your marked-up PDF can be saved and seamlessly shared, maintaining perfect compatibility with any PDF viewer.
Intuitive, consistent interface for PDF markup and annotation without unexpected layout changes.Fully compatible with Adobe PDF standards and Microsoft Office document formats.Lightweight and optimized for smooth performance on iPads and tablets.Completely free core features for reading, editing, and managing your PDFs.
microsoft office alternative - wps office

Frequently Asked Questions

Why did the underline tool disappear after I updated Acrobat on my iPad?

Adobe frequently redesigns the Acrobat Reader interface to streamline the mobile experience. During these updates, specific markup tools like underline and strikethrough are often relocated into grouped menus or temporarily removed while the new interface is being tested.

Can I revert to the old version of Acrobat Reader on my iPad?

No, Apple's iPadOS does not officially support rolling back apps to previous versions once they are updated via the App Store. You will need to adapt to the new interface or switch to an alternative PDF reader.

Are annotations made in WPS Office visible in Adobe Acrobat?

Yes. WPS Office uses standard PDF formatting, meaning any underlines, highlights, or comments you add in WPS Office will be fully visible and editable when the file is opened in Adobe Acrobat or any other standard PDF viewer.

How do I report missing features to Adobe?

You can submit feedback directly to Adobe by tapping the Profile or Settings icon inside the Acrobat Reader app, selecting 'Help & Support', and choosing the option to share feedback or report an issue regarding the new UI.