To make lines thicker in Procreate, use the upper slider on the left sidebar to increase the brush size while you draw. This is the primary documented method to make lines thicker in Procreate, and you can save that size for the brush by tapping the + symbol to create a Brush Size Memory mark on the slider.
How to make lines thicker in Procreate with the size slider
The size slider is the quickest way to thicken your strokes. While a brush is selected, drag the upper slider on the left sidebar to the right to increase the brush size. Procreate documents this slider as the brushstrokes size control. As you slide, the stroke preview updates in real time, letting you see the new thickness before you draw.
Saving and recalling your brush size
Once you find a thickness you like, you can save it for that specific brush. Tap the + symbol on the slider to create a Brush Size Memory mark. Procreate allows you to set up to four marks for brush size and up to four marks for opacity. You can set four marks for brush size and four marks for opacity. To return to a saved setting later, simply tap the desired mark or slide the slider close to it. To return to a saved setting, slide the slider close to it. This is especially useful when switching between thin lines for detail work and thicker lines for coloring, shading and rendering in Procreate.
Adjusting line thickness in Brush Studio
For more control over how a stroke behaves, open Brush Studio by tapping a brush in the Brush Library to select it, then tapping it again. Inside Brush Studio, the documented controls that affect line thickness include taper settings. You can adjust the taper length at the beginning, end, or both ends of a stroke, which makes a line go from thick to thin smoothly. Brush Studio also includes a Preview Size option so you can see how larger or smaller strokes will look before committing to a change.
Understanding pressure and line thickness
Pressure sensitivity does not have a single universal setting that applies across all brushes. Instead, pressure behavior is adjusted per-brush inside Brush Studio. To customize pressure, open a brush in Brush Studio and locate the pressure-related controls there. This allows you to make a brush respond with thicker strokes when you press harder, or keep a consistent thickness regardless of pressure.
Frequently Asked Questions
Can I thicken lines after I have already drawn them?
No. You must choose the desired brush size before or while you draw.
Is there a universal thickness setting for all brushes?
No. Thickness is handled through the size slider and per-brush Brush Studio settings. Each brush can have its own saved size marks and its own taper, pressure, and preview settings.
How can I preview the stroke size before drawing?
Procreate includes a Preview Size option inside Brush Studio. You can also see the current brush size reflected in the size slider on the left sidebar. As you adjust the slider, the stroke preview updates so you know exactly how thick the line will be.
Does Procreate work on Android devices?
No. Procreate is an iPad app. The current Procreate version is 5.3.14. The current version requires iPadOS 16.3 or newer and supports models such as iPad Pro (M4), iPad Air (M2), iPad Pro 12.9-inch (1st through 6th generation), iPad Pro 11-inch (1st through 4th generation), iPad Pro 10.5-inch, iPad Pro 9.7-inch, iPad (5th through 10th generation), iPad mini (5th through 7th generation), and iPad Air (3rd through 6th generation).
Is there a limit to how thick a line can be made?
You can increase the size slider to its maximum value, and within Brush Studio you can further adjust taper and other properties to achieve very thick strokes.
