How to Create and Sign a PDF Signature in Acrobat Reader Mobile
Question details
The user needs to know how to create a digital signature or initials and apply it to a PDF document using a mobile application.

- Product
- Adobe Acrobat Reader Mobile
- Device & OS
- not provided
- Scenario
- Signing a PDF document on a mobile device and optionally syncing the signature across devices.
- Observed behavior
- The user seeks the correct workflow to draw, place, resize, and finalize a signature within an unshared and unsecured PDF file.
Verify that the PDF document you intend to sign is not secured with editing restrictions or currently shared for online reviewing, as these conditions will disable the signing tools.
Creating and Placing a Signature Using Adobe Acrobat Reader Mobile
Use the built-in Fill & Sign tools in the mobile app to draw, upload, or capture your signature, and apply it to your PDF document.
The Acrobat Reader mobile app allows you to create a personalized signature by drawing it on your screen, selecting an existing image, or using your camera to capture a handwritten signature. You can easily adjust the placement and size before the document is finalized.
Launch the Acrobat Reader app on your mobile device and open the unsecured, unshared PDF file you need to sign.
Tap the pencil icon (or the tools menu) in the lower right corner, then select the 'Fill & Sign' option from the list.
Tap the signature icon on the toolbar. Choose 'Create Signature' and decide whether you want to draw the signature, choose an image from your gallery, or take a photo of your physical signature.
If you want to use this signature on other devices, toggle the 'Save to Online Profile' option to sync it with your supported Adobe apps.
Tap anywhere on the document to place the signature. Use the bounding box handles to move or resize it to fit the designated signature line.
Sign PDF Documents for Free with WPS Office
WPS Office offers a comprehensive and user-friendly PDF toolkit, allowing you to quickly draw, scan, or type your signature on any mobile device or desktop. It is a lightweight, all-in-one office suite that perfectly handles PDF editing and signing without hassle.
- 1. Open your PDF in WPS Office: Launch the WPS Office mobile app and open the PDF document you need to sign.
- 2. Select the Signature tool: Tap the 'Tools' menu at the bottom, navigate to the 'Annotation' or 'Fill & Sign' tab, and tap 'PDF Signature'.
- 3. Create your signature: Tap 'Create Signature' to smoothly draw your signature directly on the screen or import a saved image.
- 4. Place and save: Tap on the document where you want the signature to appear, adjust its size as needed, and save your signed file.

Frequently Asked Questions
Why are the signature tools greyed out in Acrobat Reader mobile?
The signature tools are automatically disabled if the PDF document is encrypted, password-protected against editing, or currently active in a shared review state. You must use an unsecured version of the document to add a signature.
Can I remove a signature after placing it on the PDF?
If you have just placed the signature and haven't saved or closed the document, you can delete it by tapping the signature and selecting the trash icon. However, once the document is finalized, saved, and flattened, the signature becomes a permanent part of the file and cannot be removed.
How do I sync my mobile signature to my computer?
When creating your signature in the mobile app, ensure the 'Save to Online Profile' option is checked. You must be signed in to your Adobe account for the signature to automatically synchronize with the Acrobat Reader software on your desktop.




