
Paint Tool SAI is a beginner-friendly digital art program that allows users to create custom brushes and select specific areas of their artwork. To select the foreground image in Paint Tool SAI, users can utilize the selection tools, including the “Select” brush, the dotted square, the dotted lasso, and the Magic Wand. The Magic Wand tool has three detection modes: Transparency (Strict), Transparency (Fuzzy), and Color Difference. By choosing Color Difference and adjusting the Color Diff. bar, users can select specific colored areas of their artwork. Additionally, the eyedropper tool allows users to select a specific color from their image by clicking on the desired pixel. These selection tools enable users to manipulate and modify specific areas of their artwork without affecting the rest of the image.
| Characteristics | Values |
|---|---|
| Selection Tools | Brush, Dotted Square, Dotted Lasso, Magic Wand |
| Magic Wand Modes | Transparency(Strict), Transparency(Fuzzy), Color Difference |
| Magic Wand Settings | Color Diff. Bar, Invert, Increment |
| Brush Settings | Size, Opacity, Pen Pressure, Texture |
| Layer Settings | Working Layer, All Image, Selection Source |
| Eyedropper Tool | Click to select a colour from the image |
| Primary Colour | Colour being used for drawing/colouring |
| Secondary Colour | Switched with Primary Colour using double-sided arrow |
| Toggle Transparency | Turns all tools into erasers |
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What You'll Learn
- Use the magic wand tool to select the foreground image
- Invert the selection to choose the area outside the foreground image
- Adjust the selection brush size, opacity, and pen pressure
- Use the eyedropper tool to select the foreground image's colour
- Switch the primary and secondary colours using the double-sided arrow

Use the magic wand tool to select the foreground image
The Magic Wand Tool is your best friend when it comes to selecting things in Paint Tool SAI. It has three detection modes: Transparency (Strict), Transparency (Fuzzy), and Color Difference. The first two modes are not very useful in most cases, so it is recommended to switch to Color Difference.
Using Color Difference, the Magic Wand Tool selects things depending on their colour. The "Color Diff." bar allows you to choose how strict the selection will be. You can adjust the sensitivity of the detection, which is useful when you want to select a specific coloured area or all areas of that colour.
To use the Magic Wand Tool to select the foreground image, first, make sure that you are on the Working Layer. This is the default mode and will only select things that are on your active layer. Next, experiment with the different modes and settings to find what works best for your image. The Invert tool can be useful when coupled with the Increment tool.
Additionally, you can adjust the click point of the Magic Wand Tool while a selection is still active. This is done by clicking and dragging the Control Nub, which looks like a white square with four arrows inside it. This will relocate the click point and reinterpret the selection.
The Magic Wand Tool also has a Subtractive selection mode, which is used to remove areas that are not required. To use this mode, hold down the Alt key while clicking on the areas you want to exclude. This technique is particularly useful for selecting text characters.
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Invert the selection to choose the area outside the foreground image
To invert the selection to choose the area outside the foreground image in Paint Tool SAI, you can use the "Invert" tool. This tool is straightforward to use and is located in the selection bar, along with other useful tools like the "Increment" tool.
The "Invert" tool is used to invert the selection, which can be especially useful when coupled with the "Increment" tool. To use it, first, make sure you are in "Select Mode" by selecting one of the selection tools, such as the Magic Wand or the Selection Brush. The selected area will appear blue.
Next, select the outside area of your foreground image. You can do this by using the Magic Wand tool, which has three detection modes: Transparency (Strict), Transparency (Fuzzy), and Color Difference. Adjust the "Color Diff." bar to choose how strict the color selection will be.
Once you have selected the outside area, you can then use the "Invert" tool to invert the selection and choose the area outside the foreground image. This will allow you to work on the selected area without affecting the foreground image.
Additionally, you can use the "Increment" tool to fine-tune your selection and prevent color bleeding. By selecting outside of your foreground image and clicking "Increment" a couple of times, you can slightly bleed into the image and then use the "Invert" tool to ensure that the color does not bleed through. This technique is useful for selecting lineart before coloring and can also be used to create borders.
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Adjust the selection brush size, opacity, and pen pressure
When selecting a foreground image in Paint Tool SAI, you can adjust the selection brush size, opacity, and pen pressure. The selection brush is used to select areas to move, rotate, scale, or paint without going outside the boundaries.
To adjust the selection brush size, you can use the "Min Size" setting, which determines how small the brush can get when pressing lightly on a pen tablet. You can also adjust the brush size by changing the tablet's pressure settings. By having your tablet pressure detection on the low end, you can achieve a big brush with small lines. Additionally, you can try using a larger brush to draw and then erasing with a smaller brush to create the desired selection.
To adjust the opacity, you can use the "Density" setting, which controls how opaque or transparent the brush is. The "Opacity" setting also allows you to preserve the drawing opacity and prevent it from becoming too thinned out.
To control the pen pressure, you can adjust the pressure sensitivity of the brush. This will determine how the brush size and opacity respond to the pressure applied. By adjusting the pressure range, you can control the blur effect and achieve the desired line thickness.
Overall, by experimenting with the various settings and tools available in Paint Tool SAI, you can effectively adjust the selection brush size, opacity, and pen pressure to suit your specific needs when selecting a foreground image.
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Use the eyedropper tool to select the foreground image's colour
The Eyedropper Tool in Paint Tool SAI allows you to select a colour from your image and use it for painting. This tool is essential for digital artists who want to accurately select a colour from their palette and use it for their artwork.
To use the Eyedropper Tool, you can hover over your desired colour and press the "i" key on your keyboard to select it immediately. This method eliminates the need to switch back and forth between the Eyedropper Tool and your brush, streamlining your workflow.
Additionally, you can customise the tool to suit your preferences. For example, you can assign the Eyedropper Tool to a specific button on your pen, such as the "L" button, and modify your Wacom settings accordingly. This way, you can pick colours without having to click the pen tip, offering a more seamless colour selection experience.
The Eyedropper Tool is a versatile feature in Paint Tool SAI, enabling artists to efficiently select and utilise colours from their palette with ease. By understanding its functionality and customisation options, users can enhance their creative process and produce more intricate and accurate digital artwork.
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Switch the primary and secondary colours using the double-sided arrow
Paint Tool SAI is a user-friendly art program with a wide range of tools and functionalities. One such feature is the ability to switch the primary and secondary colours using the double-sided arrow. This arrow is located between the two selected colours, allowing users to toggle between them effortlessly.
The primary and secondary colour boxes are easily identifiable next to the common tools. Clicking on these colour boxes brings up a new dialog box, providing users with additional colour options and customisation. The double-sided arrow between the colours enables users to switch between their primary and secondary colour choices seamlessly.
This functionality is particularly useful when working on digital illustrations or paintings, as it provides a quick way to alternate between two selected colours without having to select them manually each time. It simplifies the colour selection process and enhances the overall user experience.
Moreover, Paint Tool SAI offers a variety of other colour-related tools, such as the eyedropper tool, which allows users to select a specific colour from their canvas by clicking on the desired pixel. This tool further enhances the precision and efficiency of colour selection within the software.
By understanding and utilising the double-sided arrow for switching primary and secondary colours, as well as exploring other colour selection tools, users can take advantage of the flexibility and convenience that Paint Tool SAI offers for their creative projects.
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Frequently asked questions
To select the foreground image in Paint Tool SAI, you can use the Working Layer selection mode. This will only select things that are on your active layer. You can also use the Magic Wand tool, which has three detection modes: Transparency (Strict), Transparency (Fuzzy), and Color Difference. Switch it to Color Difference and adjust the "Color Diff." bar to select a specific colored area.
There are two brushes called "Select" and "Deselect," as well as a dotted square, a dotted lasso, and the Magic Wand. These tools allow you to select areas to move, rotate, scale, or paint without going outside the boundaries.
You can change the size, opacity, and pen pressure of the Select brush. The Deselect pen acts as an eraser and has the same settings. You can also adjust the detection modes of the Magic Wand tool to select transparent regions or specific color ranges.











































