How to Change Freehand Line Color and Thickness in PDF on iOS
Question details
The user needs to locate the menu options to customize the color and thickness of freehand lines while annotating a document on an iOS device.

- Product
- PDF Editor
- Device & OS
- iOS
- Scenario
- Drawing or adding freehand annotations to a PDF file on an iPhone or iPad.
- Observed behavior
- The user is looking for the specific controls within the mobile application's interface to change the appearance of the freehand annotation tool.
Ensure you have the latest version of the app installed on your iOS device and verify that the PDF file is not password-protected or restricted from editing.
Adjust Freehand Line Properties via the Annotation Menu
You can quickly change the look of your freehand drawings by accessing the built-in properties palette within the annotation tool.
The freehand drawing tool on iOS is designed with a quick-access menu that allows you to swap colors and adjust stroke width on the fly. This menu usually appears as a secondary popup or a toolbar expansion when the pen tool is active.
Tap on the 'Edit' or 'Annotate' tab located at the top or bottom of your screen to reveal the document annotation toolset.
Locate and tap the 'Freehand' drawing tool, typically represented by a pen or pencil icon.
Tap the pen icon a second time, or tap the color indicator circle that appears next to it, to open the tool's settings palette.
Select your desired ink color from the available swatches, and drag the thickness slider left or right to make the line thinner or thicker.

Annotate PDFs Smoothly with WPS Office for iOS
WPS Office for iOS provides an intuitive mobile interface with robust PDF annotation tools. You can effortlessly draw, highlight, and add comments to your PDF documents with fully customizable colors and line thicknesses.
- 1. Download the app: Install WPS Office for free from the Apple App Store on your iOS device.
- 2. Open your PDF: Launch WPS Office and open the PDF document you wish to annotate.
- 3. Access PDF tools: Tap the 'Tools' icon at the bottom of the screen and switch to the 'Annotation' tab.
- 4. Customize the pen: Select the 'Pen' tool, tap it to bring up the color palette and thickness slider, and adjust your settings.
- 5. Draw and save: Draw directly on your document and tap 'Done' or 'Save' to preserve your annotations.

Frequently Asked Questions
Can I change the color of a freehand line after I have already drawn it?
Yes, you can tap on an existing freehand line to select it. A popup menu will appear allowing you to change its color, adjust its thickness, or delete the annotation entirely.
Why is the freehand tool grayed out on my PDF?
The freehand tool may be unavailable if the PDF is locked or has specific editing restrictions set by the author. You will need to enter the document's permission password to unlock annotation capabilities.
Does changing the line thickness affect all my future drawings?
Yes, the annotation tool typically remembers your most recently used color and thickness settings for the freehand pen, applying them to your future strokes until you change the settings again.
Can I use an Apple Pencil to draw freehand lines on my iPad?
Absolutely. Modern PDF editors on iOS, including WPS Office, fully support Apple Pencil integration, providing pressure sensitivity and higher precision for your freehand drawings.




