How to Add a Text Box to a PDF in Mobile Apps
Question details
The user wants to insert a text box into a PDF document using a mobile application but can only find a basic text tool.

- Product
- PDF Mobile App
- Device & OS
- not provided
- Scenario
- Editing a PDF document on a mobile device to add boxed text annotations.
- Observed behavior
- The user is unable to locate the specific text box function, only seeing options for inserting simple floating text without a visible box.
Before making changes, ensure your PDF document is not restricted or password-protected against editing and annotations. It's also recommended to save a backup copy of the original file.
Use Annotation and Comment Tools in Your Mobile App
Many mobile PDF readers hide the text box feature within the commenting or annotation menus rather than the main edit menu.
In many simplified mobile apps, the primary 'Edit Text' tool is designed only to alter existing document text or add simple typewriter text. To add an actual bounded text box, you typically need to look for annotation tools.
Launch your mobile PDF app and open the document you wish to edit.
Look for the 'Tools', 'Annotate', or 'Comment' icon, typically located at the bottom navigation bar or in a top dropdown menu.
Tap on the 'Text Box' icon (often represented by a 'T' inside a square outline). If your app only provides a basic text tool, you may need to use a rectangle shape tool and place text over it as a workaround.
Tap on the document page where you want the text box to appear, type your text, and adjust the borders or background color using the pop-up formatting toolbar.

Switch to a Desktop PDF Editor for Advanced Features
If your mobile application completely lacks a dedicated text box tool, switching to a desktop PDF editor offers a complete set of layout and editing features.
Easily Add Text Boxes and Edit PDFs with WPS Office
WPS Office provides a comprehensive PDF editor on both desktop and mobile platforms, making it incredibly simple to add text boxes, annotate, and fully edit your PDF files on the go.
- 1. Open your PDF: Launch the WPS Office app and open your PDF document.
- 2. Go to the Comment Tab: Navigate to the 'Comment' tab on the top ribbon (or the 'Tools' menu on the mobile app).
- 3. Select Text Box: Tap or click on the 'Text Box' icon, then click exactly where you want to place it on the PDF page.
- 4. Type and Format: Enter your text inside the box. Use the floating properties panel to easily change the font, text color, box border, and fill color.

Frequently Asked Questions
Why does my mobile PDF app only have a simple text tool?
Many basic or pre-installed mobile PDF readers offer a simplified toolset focused primarily on viewing documents. Features like customizable text boxes are often reserved for advanced annotation tools or full-featured PDF editing apps.
Can I change the border and background color of a text box on a mobile device?
Yes, provided your mobile PDF app supports full text box properties. After inserting the text box, tap on it to reveal a formatting toolbar where you can adjust the border style, thickness, and background fill color.
Is there a difference between the Typewriter tool and a Text Box?
Yes. A Typewriter tool adds simple, floating text directly over the document background. A Text Box tool inserts a distinct rectangular shape that contains your text, allowing you to format the box's borders and background color separately.
Will the text boxes I add on mobile be visible when opened on a computer?
Yes, as long as the text boxes are saved as standard PDF annotations. Always make sure to tap 'Save' or 'Done' before closing the document to ensure your annotations are embedded and compatible across different devices.




