How to Add Check Marks to a PDF on iPhone
Question details
The user needs to insert check marks into specific fields within a PDF form on an iPhone.

- Product
- PDF Reader/Editor
- Device & OS
- iPhone (iOS)
- Scenario
- Filling out a digital PDF form on a mobile device and trying to locate the appropriate checkbox or stylus tool to mark selections.
- Observed behavior
- The user is unable to locate the editing tools necessary to insert check marks after importing a PDF document into their iPhone PDF app.
Ensure your PDF app is updated to the latest version on your iPhone and verify that the PDF document does not have restricted form-filling or editing permissions.
Use the Fill & Sign Tool to Add Check Marks
This is the most direct method to complete form fields using dedicated PDF editing tools like Adobe Acrobat or WPS PDF on your iPhone.
Dedicated PDF applications usually have a built-in feature designed specifically for filling out non-interactive or interactive forms. The Fill & Sign feature provides preset symbols like check marks, crosses, and dots.
Launch your PDF editor app on your iPhone and open the document you wish to edit.
Tap the 'Fill & Sign' or 'Form' option to reveal the form editing toolbar, typically found at the bottom or top of your screen.
Locate and select the checkbox tool, which is usually represented by a check mark icon in the toolbar.
Tap on the specific form field or box within the PDF where you need the mark. You can then save your completed document.

Add Check Marks Using the iOS Markup Tool
If you do not have a dedicated third-party PDF editor installed, you can use the native Markup tool in the iOS Files app to draw a check mark manually.
Easily Add Check Marks to PDFs with WPS Office for iOS
WPS Office offers a comprehensive mobile PDF editor that allows you to effortlessly fill forms, add check marks, sign documents, and edit text directly from your iPhone, without needing complex setups.
- 1. Open PDF in WPS Office: Launch the WPS Office app on your iPhone and open the target PDF file from your local storage or cloud.
- 2. Access PDF Edit Tools: Tap the 'Tools' icon at the bottom menu, navigate to the 'PDF Edit' or 'Annotation' tab, and select the 'Fill & Sign' option.
- 3. Insert the Check Mark: Choose the check mark icon from the floating toolbar, tap the exact location on the form where you want it placed, adjust its size if needed, and save your document.

Frequently Asked Questions
Why can't I edit or add a check mark to my PDF on my iPhone?
Your PDF may be password-protected or have restrictions against editing and form filling. You will need to remove the security restrictions or request an unlocked version of the document from the original author before you can add check marks.
Can I type a check mark instead of using a stamp or drawing one?
Yes, you can use the text tool available in most PDF editors. Simply tap the text tool, place the text box over the form field, and use your iPhone keyboard to insert a check mark emoji (✔️) or special symbol.
Does adding a check mark change the original PDF format?
No. Using a dedicated 'Fill & Sign' tool overlays the check mark onto the PDF as an annotation. It does not alter the underlying text, layout, or original formatting of the document.




