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PDF Editing Issues

How to Change Freehand Line Color and Thickness in PDF on iOS

Chanuka GeekiyanageChanuka Geekiyanage Oct 19, 2026 869 views

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.

How to Change Freehand Line Color and Thickness in PDF on iOS
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.
Before you start

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.

Solution 1Recommended

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.

1
Open the annotation tools

Tap on the 'Edit' or 'Annotate' tab located at the top or bottom of your screen to reveal the document annotation toolset.

2
Select the freehand tool

Locate and tap the 'Freehand' drawing tool, typically represented by a pen or pencil icon.

3
Access the properties menu

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.

4
Adjust color and thickness

Select your desired ink color from the available swatches, and drag the thickness slider left or right to make the line thinner or thicker.

Adjust Freehand Line Properties via the Annotation Menu
Settings Saved: The application will remember your selected color and thickness for the next time you use the freehand tool.
PDF Annotation Made Easy

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. 1. Download the app: Install WPS Office for free from the Apple App Store on your iOS device.
  2. 2. Open your PDF: Launch WPS Office and open the PDF document you wish to annotate.
  3. 3. Access PDF tools: Tap the 'Tools' icon at the bottom of the screen and switch to the 'Annotation' tab.
  4. 4. Customize the pen: Select the 'Pen' tool, tap it to bring up the color palette and thickness slider, and adjust your settings.
  5. 5. Draw and save: Draw directly on your document and tap 'Done' or 'Save' to preserve your annotations.
Quickly customize freehand drawing colors and stroke weights on your iPhone or iPad.Fully compatible with standard PDF formats and Adobe Acrobat annotations.Supports Apple Pencil for highly precise drawing on iPad.Lightweight app design ensures smooth document scrolling and editing.
microsoft office alternative - wps office

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.