Paint Tool Sai is a popular digital illustration software that gained prominence due to its lightweight nature and ease of use. However, some users have encountered an issue with pixelated lines in their artwork. This problem is often attributed to specific settings within the software, such as canvas size, resolution, brush settings, and stabiliser configurations. Adjusting these settings, such as increasing the canvas size and resolution, can help alleviate the issue and produce smoother lines. Additionally, ensuring that tablet drivers are up to date and properly configured can also contribute to improving the line quality in Paint Tool Sai.
| Characteristics | Values |
|---|---|
| Canvas size | 3600 x 5400 |
| DPI | 300 |
| Stabilizer | High |
| Brush settings | Anti-aliasing |
| Advanced settings | Quality 4 and edge hardness 100 |
| Tablet | Up-to-date drivers |
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What You'll Learn

Increase canvas size
To avoid pixelated lines in Paint Tool SAI, it is recommended to use a larger canvas. One user on Reddit recommends a canvas size of 3600 x 5400 at 300 DPI, which has worked for them in preventing pixelation.
To increase the canvas size in Paint Tool SAI, you can follow these steps:
- Go to the Main Menu of Paint Tool SAI.
- Look for the function that allows you to change the canvas resolution or pixel size. This will enable you to adjust the canvas size without affecting the image itself.
- Make the necessary adjustments to the canvas size, ensuring that it is larger than your current canvas.
- Continue working on your artwork with the new canvas size.
It is important to note that increasing the canvas size may not always completely eliminate pixelation. Other factors such as brush settings, monitor resolution, and tablet drivers can also contribute to pixelated lines.
If you continue to experience pixelation issues, try restarting the program or updating your tablet drivers. Additionally, ensure that your tablet is properly set up in both your control panel properties and in Paint Tool SAI itself.
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Adjust anti-aliasing brush settings
To adjust anti-aliasing brush settings in Paint Tool SAI and achieve non-pixelated lines, follow these steps:
First, ensure that your canvas size is large enough. A bigger canvas can help reduce the pixelation of lines. Some users suggest a canvas size of 3000x3000 or larger, such as 3500x3500px or even 10k x 10k for higher resolution. However, keep in mind that very high resolutions may cause lag on some computers. Experiment with different canvas sizes to find the optimal setting for your computer.
Next, adjust the anti-aliasing settings for your brush. In Paint Tool SAI, the anti-aliasing option is located in the brush settings. Look for a series of different pen tips, ranging from a fine-tip to a thick one with corners. Adjust the anti-aliasing to the desired level, with the fine-tip option being the fuzziest.
Additionally, try using an ink pen with a small circle, 100% density, and advanced settings of quality 4 and edge hardness 100. Set your stabilizer to a high value, such as 10 for drawing and 3 for sketching, to reduce wobbliness in your lines.
If you're still experiencing pixelated lines, make sure your tablet drivers are up to date and properly configured in your control panel properties and Paint Tool SAI. Restarting the program or unplugging and plugging back in your tablet may also help resolve the issue.
By following these steps and adjusting the anti-aliasing brush settings, you should be able to achieve non-pixelated lines in Paint Tool SAI.
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Use a bigger canvas
One way to avoid pixelated lines in Paint Tool Sai is to use a bigger canvas. Some users have reported that increasing the canvas size and resolution has helped them solve the problem of pixelated lines.
A user who had a canvas size of 3000x3000 at 300 DPI and a stabilizer of 15, which was causing pixelated lines, was advised to use a bigger canvas. The user who provided this solution stated that they use a 3600 x 5400 size canvas at 300 DPI and does not face the issue of pixelation.
Another user, who also had a canvas size of 3000x3000 at 300 DPI, was advised to try using a larger document size, such as the Sai paper-sized document templates. The user who suggested this solution stated that they usually work with a canvas size of 1000 x 1000 pixels and do not face the issue of pixelation.
It is worth noting that while increasing the canvas size and resolution can help reduce pixelation, it may also cause some computers to lag. For example, a user stated that a canvas size of 10k x 10k with 300 DPI would cause their old laptop to lag.
In addition to increasing the canvas size, it is also important to ensure that your tablet drivers are up to date and that your tablet is set up properly in your control panel properties and in Sai itself.
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Update tablet drivers
To get non-pixelated lines in Paint Tool SAI, it is important to ensure that your tablet drivers are up to date. Updating your tablet drivers can improve your tablet's performance and fix any issues with line pixelation. Here is a step-by-step guide on how to update your tablet drivers:
Step 1: Check Your Tablet Model and Firmware Version
Before updating your tablet's firmware, it is essential to know your tablet's model and current firmware version. Contact your tablet manufacturer's customer support for guidance on checking the firmware version of your specific tablet model. They may request your tablet's serial number to provide accurate information.
Step 2: Download and Install the Firmware Update Tool
Visit your tablet manufacturer's website or support page to download the latest firmware update tool or software. Once downloaded, install the firmware update tool on your computer by running the installation file and following the on-screen instructions.
Step 3: Open the Firmware Update Tool
After successfully installing the firmware update tool, open the application. Ensure that your tablet is correctly connected to your computer before proceeding. If a "No device detected" message appears, confirm that your tablet is connected properly and that your tablet model is included in the list of supported models.
Step 4: Check for Available Updates
With the firmware update tool open and your tablet connected, the software will automatically identify your tablet model and its current firmware version. It will then check for available firmware updates. If no updates are available, a message indicating "No updates available" will be displayed.
Step 5: Install the Update
If an update is available, you will see an "Update" button on the software page. Click the "Update" button and follow the on-screen instructions to complete the firmware update. For some tablet models, you may need to press an express key to reconnect the device during the update process.
Additional Tips:
- Consider using a larger canvas size, such as 3600 x 5400 at 300 DPI, to reduce line pixelation in Paint Tool SAI.
- Ensure that your tablet is properly set up in your control panel properties and within Paint Tool SAI itself.
By following these steps and ensuring your tablet drivers are up to date, you should be able to improve your tablet's performance and achieve smoother, non-pixelated lines in Paint Tool SAI.
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Restart Paint Tool Sai
If you are experiencing pixelated lines in Paint Tool SAI, there are a few potential solutions. Firstly, ensure that your tablet drivers are up to date and that your tablet is set up properly in your control panel properties and in SAI itself. You can also try unplugging your tablet and plugging it back in, as this has been known to resolve the issue.
If the problem persists, you may need to adjust your canvas settings. Try using a larger canvas size, such as 3600 x 5400 at 300 DPI. This has been reported to improve line quality and reduce pixelation.
If you have important projects that you do not want to lose, it is recommended to transfer them to a USB drive or external hard drive before proceeding.
To reset Paint Tool SAI, follow these steps:
- Navigate to the SAI folder and delete the 'notremoveme.ssd' file. This file will appear as a transparent folder.
- Open the Thumbnail folder and delete all the .SSD files.
- Empty the Recycle Bin to permanently delete the files you just removed.
- Ensure that your USB drive or external hard drive is disconnected from your computer.
- Locate the Paint Tool SAI program, right-click on it, and select "Run as administrator."
- Click "Yes" on the pop-up that appears, and then click "OK" on the subsequent pop-up.
- Allow the program to perform a scan, which should take around 2-3 minutes. A successful scan indicates that there are no .SAI projects or .SSD files on your computer.
By following these steps, you can reset Paint Tool SAI and address issues with pixelated lines.
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Frequently asked questions
Try increasing your canvas size.
This depends on your computer's capabilities and personal preference. Some users report success with a canvas size of 1000 x 1000 pixels, while others use a larger size, such as 3500x3500px or 3600 x 5400 at 300 DPI.
Yes, try changing your brush settings, specifically the anti-aliasing setting. Additionally, ensure your tablet drivers are up to date and that your tablet is set up correctly in your control panel properties and in Paint Tool SAI.
In the brush settings, look for a series of different pen tips, ranging from a fine-tip to a thick one with corners. Adjust this setting to the fine-tip option for smoother lines.
Try unplugging your tablet and plugging it back in, or restarting Paint Tool SAI. If that doesn't work, you may need to change a setting in the misc.ini file in Paint Tool SAI.











































