Why Does PDF Alt Text Not Show on Hover in Adobe Acrobat?
Question details
The user is confused because the alternative text assigned to figures and tables in a PDF does not display as a visual tooltip when hovering over them with a mouse.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Verifying accessibility features and alt text on PDF images and tables.
- Observed behavior
- Alt text is present in the object properties but does not display as a hover tooltip on the screen.
Ensure your PDF document is fully downloaded and opened in a dedicated PDF viewer like Adobe Acrobat, as web browser PDF viewers often have limited accessibility inspection tools.
Understand Alt Text Purpose and Verify via the Tags Pane
Alt text in PDFs is designed for screen readers, not as a visual tooltip. You must use accessibility tools to verify its presence.
In HTML web design, the 'title' attribute often creates a hover tooltip, but in PDF documents, alternative text (alt text) is strictly accessibility metadata. It is meant to be read aloud by assistive technologies like screen readers. Therefore, Adobe Acrobat does not natively display it as a pop-up when hovering with a mouse.
Launch Adobe Acrobat and open the PDF document containing the images or tables you want to inspect.
Go to the View menu at the top, select Show/Hide, then Navigation Panes, and click on Tags. This will open the Tags panel on the left side of your screen.
Expand the structural tags in the Tags tree to locate the <Figure> tag corresponding to your image.
Right-click the <Figure> tag and select Properties from the context menu.
In the Object Properties dialog, look at the Alternate Text field. If the alt text is written here, it is correctly applied to the image and will be read by screen readers.
Run the Acrobat Accessibility Checker
Use Acrobat's built-in accessibility tool to automatically scan the document for missing alt text without having to hover over images.
Easily View and Manage PDFs with WPS Office
WPS Office offers a robust built-in PDF tool that makes viewing, editing, and managing your PDF documents simple. While advanced accessibility tagging is handled in specialized tools, WPS PDF provides everything you need for daily PDF reading and editing tasks seamlessly.
- 1. Download and Install: Download WPS Office for free from the official website and install it on your device.
- 2. Open Your PDF: Launch WPS Office and drag and drop your PDF document into the workspace, or use the Open file menu.
- 3. Navigate Smoothly: Use the clean, intuitive interface to scroll through your PDF, zoom in on figures, and review document structure.
- 4. Edit as Needed: Switch to the Edit tab to easily modify text, update images, or convert the PDF into a Word document for extensive formatting.
Frequently Asked Questions
Can I force Adobe Acrobat to show alt text as a tooltip?
No, Adobe Acrobat does not natively support displaying alt text as a mouse-hover tooltip. Alt text is strictly designed as accessibility metadata for assistive technologies like screen readers.
How do I know if my PDF alt text is working correctly?
The most reliable way to test PDF alt text is to use a screen reader like NVDA, JAWS, or the built-in 'Read Out Loud' feature in Acrobat to ensure the text is announced when the figure is reached.
What is the difference between a tooltip and alt text in a PDF?
A tooltip is a visual aid that appears when hovering over interactive elements like form fields or hyperlinks. Alt text is hidden metadata attached to structural tags, specifically meant to be read by screen-reading software for visually impaired users.
Does Microsoft Word alt text carry over to the PDF when exported?
Yes, if you use the 'Save as Adobe PDF' or 'Export' feature in Microsoft Word (or WPS Office) and ensure that the 'Document structure tags for accessibility' option is checked, your image alt text will be properly embedded into the resulting PDF.
