Lines appear messy, rough, or jaggy
If the lines appear messy or rough, please check the following.
The display scale is too large
If pixels are noticeable as in the image below, check that the displayed size is not higher than 100%.
If the lines look clean at 100% scale, there is no issue with the image’s quality.
You can set the display size to 100% from the View menu > 100%.
■ PCs and tablets
On PCs and tablets, you can also change the magnification by using the Zoom bar.
■ Smartphones
The display scale is too small
If lines are jagged (coarse pixels) as in the image below, check that the displayed size is not lower than 100%.
While the image preview makes the image look rough at specific scales, there is no problem with the image’s quality if the lines look clean at 100% scale.
You can set the display size to 100% from the View menu > 100%.
The quality of the image preview at low scales can be improved through the following settings:
1. Open Preferences.
2. From the left categories, select Canvas.
3. Select High quality under Display quality and press OK.
■ PCs and tablets
■ Smartphones
4. The image preview will be displayed in higher quality.
Noticeable jaggy lines even when the display size is set to 100%
If there are noticeable jaggy lines even when the display size is set to 100%, please check the following.
Expression color
Check the layer’s Expression color under Layer Property.
If the expression color is set to Monochrome, then anti-aliasing is disabled and jaggy lines will be more noticeable.
■ PCs and tablets
■ Smartphones
Monochrome is mainly used for printing manuscripts.
If the manuscript resolution is set to over 600dpi, it will not affect printing quality even if the image looks jagged on a monitor.
See below for how to check resolution.
■ PCs and tablets
You can check it at the top of the screen.
■ Smartphones
1. Select Edit > Change Image Resolution.
2. Confirm the Resolution.
Pen settings
With a brush selected, check Anti-aliasing under the Sub Tool Detail palette.
When Anti-aliasing is None, jagged lines may be noticeable.
■ PCs and tablets
■ Smartphones
You can view sub tool details by clicking the Sub Tool Detail icon on the Tool Property Palette.
■ PCs and tablets
You can also view them from the Window menu > Sub Tool Detail.
■ Smartphones
Anti-aliasing is a method to make the image slightly blurred so that it looks smoother at the actual size.
The pen pressure is not working, or the lines are unstable
If drawing itself is unstable, for example the pen pressure isn't working or the lines are rough, check the following articles.
■Windows/macOS
■iPad
■Galaxy/Android