Marcus Chen
CorelDRAW and Corel PHOTO-PAINT allow users to create images with transparent backgrounds. This is particularly useful for webpage images, as it allows the image to blend in with the page and for the webpage background to be changed without affecting the image. Users can also preserve layer transparency in Corel Painter, which affects which areas of a layer can be painted on and the results of erasing or deleting images on a layer. While Corel PHOTO-PAINT offers a Transparency tool with three transparency types, Corel Paint Shop Pro does not appear to support transparent images.
| Characteristics | Values |
|---|---|
| File format | paletted GIF or 8-bit PNG |
| Image type | palette-based bitmaps |
| Use case | commonly used on webpages with coloured or patterned backgrounds |
| Use case example | buttons and logos |
| Transparent image background | allows changing the colour or pattern of a webpage background without changing the image background |
| Background colour | must be a single, solid colour that is not used elsewhere in the image |
| Corel Painter | allows preserving layer transparency |
| Default setting | Preserve Transparency is disabled by default |
| Preserve Transparency enabled | confines painting to areas of the layer that already contain images |
| Loading layer's transparency | hold down Control and click the layer (Mac OS) or right-click the layer (Windows) and choose Select Layer Content |
| Transparency tools | Object Transparency, Color Transparency, and Object Transparency Brush |
| Removing transparency | click on the No Transparency icon on the property bar |
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What You'll Learn
Using the Transparency tool
The Transparency tool in CorelDRAW can be used to apply different types of transparencies and adjust settings to create unique effects. The tool can be found in the CorelDRAW Toolbox on the left-hand side of the interface, above the Eyedropper tool. It looks like a black-and-white checkerboard. Once activated, the property bar at the top changes to display the transparency types, with additional options appearing when a transparency type is selected.
There are three transparency tools in PHOTO-PAINT: Object Transparency, Color Transparency, and Object Transparency Brush. The Object Transparency tool can be used to apply bitmap pattern transparency to an object, allowing the object below to show through. The Transparency Picker dropdown allows you to browse through different bitmap patterns, with darker areas indicating higher opacity and lighter areas indicating higher transparency.
Another example of using the Transparency tool is to add a color cast to a photo. First, select the image and create a rectangle the same size as the photo by holding down the Shift key and double-clicking the Rectangle tool. Choose a color for your rectangle, then activate the Transparency tool and click the Uniform Transparency icon. You can adjust the opacity using the Transparency slider.
Fountain transparency is another option, which creates a gradient that fades from white (less transparent) to black (more transparent). You can also use the Transparency Picker dropdown to access different fountain fills and adjust the length and angle of the fill using the white circle. The Transparency tool can be used to create a variety of effects, such as enhancing reflections or creating textured borders.
In Corel Painter, you can preserve the transparent areas of a layer. By default, the Preserve Transparency setting is disabled, allowing you to paint anywhere on the layer. When enabled, the transparent areas are preserved, and you can only paint on areas of the layer that already contain images.
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Preserving layer transparency
In Corel Painter, you can preserve the transparent areas of a layer. This feature is useful when you want to confine painting to specific areas of the layer that already contain images. By default, the Preserve Transparency setting is disabled, allowing you to paint anywhere on the layer.
To enable this setting, go to the Layers panel and hold down Control while clicking the layer on a Mac or right-clicking on Windows. From the menu, choose "Select Layer Content." Alternatively, click the Layer Options button in the Layers panel and select "Create Layer Mask From Transparency."
When Preserve Transparency is enabled, the transparent areas of the layer are protected, and you can only paint on existing images within the layer. This setting also affects the outcome of erasing or deleting images on that layer.
If you want to paint on a shape within the layer, you must first commit the shape to a pixel-based layer. This can be done by converting the shape to an image layer.
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Exporting with transparent colours and backgrounds
CorelDRAW and Corel PHOTO-PAINT allow users to export images with transparent colours and backgrounds. These images are typically used on web pages with coloured or patterned backgrounds. This is especially useful when you want to change the colour or pattern of a webpage background without having to adjust the image backgrounds to match.
To export an image with a transparent background, you must first create the image with a transparent background. To do this, you can use the Transparency tool in Corel PHOTO-PAINT. This tool offers three transparency options: Object Transparency, Color Transparency, and Object Transparency Brush.
The Object Transparency tool allows you to create a transparent background for objects such as buttons and logos. This ensures that the object blends seamlessly with the webpage, without the image background colour appearing as a rectangle on the page.
The Color Transparency feature enables you to select specific colours within an image and adjust their transparency. This can be useful for creating effects such as fading or enhancing reflections.
Additionally, you can use the Object Transparency Brush to paint transparency onto specific areas of your image. This allows for precise control over which areas are transparent and which remain opaque.
Once you have created your image with the desired transparent elements, you can export it in a format that supports transparency, such as GIF or 8-bit PNG. In the Export for Web dialog box, choose a paletted file format from the Format list box. This will ensure that the transparent properties of your image are retained when it is displayed on a webpage.
It is important to note that the background colour of your image should be a single, solid colour that is not used elsewhere in the image for the best results. Additionally, you can explore the use of bitmap patterns to create interesting transparent effects. By utilising the Transparency Picker dropdown, you can browse through various bitmap patterns and adjust their opacity to achieve the desired result.
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Creating palette-based images with transparency
Corel PHOTO-PAINT allows users to create and export palette-based images with transparent colours and backgrounds. These images are typically used on webpages with coloured or patterned backgrounds, such as buttons and logos.
When you place an image with an opaque background onto a webpage, the image background colour appears as a rectangle on the page. By making the image background transparent, it blends seamlessly into the webpage. Additionally, transparent image backgrounds offer the flexibility to modify the webpage background colour or pattern without needing to adjust the image backgrounds accordingly. It is important to ensure that the background colour is a single, solid colour that does not feature anywhere else in the image.
To create a palette-based image with transparency in Corel PHOTO-PAINT, you can utilise the Export for Web dialog box. Choose a paletted file format, specifically GIF or 8-bit PNG, from the Format list box. This capability empowers users to export palette-based bitmaps with transparent colours and backgrounds. These bitmaps can seamlessly integrate objects like buttons and logos into webpages with diverse designs.
Corel PHOTO-PAINT offers a range of tools to work with transparency. The Transparency tool in PHOTO-PAINT includes three primary options: Object Transparency, Color Transparency, and Object Transparency Brush. The Transparency Picker dropdown allows users to browse through various categories of bitmap patterns and adjust their transparency using the nodes. The Mask tool group, specifically the Smart Selection mask tool, aids in selecting objects for transparency adjustments. The Transparency direction can be altered, and the Edit Transparency window provides more precise control over transparency settings.
Additionally, Corel PHOTO-PAINT enables users to create transparent backgrounds for images in other file formats. To achieve the best results, it is recommended to select "None" from the Dithering list box in the Settings area. This feature is available in the "Cutting out images" section of the software.
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Removing transparency
To remove transparency, you can utilise the Transparency tool in Corel Painter. This tool offers three main options: Object Transparency, Color Transparency, and Object Transparency Brush. The Object Transparency tool includes Fountain Transparency, which creates a gradient effect on the object, with options for linear, elliptical, conical, or rectangular gradients. To remove transparency, simply click on the "No Transparency" icon on the property bar.
Additionally, you can use clip masks to make temporary changes to object transparency without permanently modifying the object. If you decide to remove the transparency later, right-click on the object and choose "Clip Mask" followed by "Disable" or "Remove".
For removing single-color backgrounds, Corel Painter offers the PNG Optimizer tool. This tool helps optimise transparent images and can also remove single-color backgrounds to create transparent backgrounds. To use this tool, first select the image type, choosing between palette-based for smaller file sizes or 16.7 Million Colors for better image quality. Next, select the transparency type by choosing "Convert matching colors to transparent" if removing a single-color background, or "Existing" if your image already has transparency. On the next page, use the eyedropper to sample the background color, or skip this step if your background is already transparent. Finally, adjust the slider to choose your preferred image quality and file size, and review the results.
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Frequently asked questions
To save a transparent image in Corel Painter, you must first preserve the layer transparency. By default, the Preserve Transparency setting is disabled, which lets you paint anywhere on the layer. When the setting is enabled, the transparent areas are preserved, and you are confined to painting on areas of the layer that already contain images.
To preserve layer transparency, you can load a layer's transparency to a selection. In the Layers panel, hold down Control and click the layer (Mac OS), or right-click the layer (Windows), and choose Select Layer Content. Alternatively, click the Layer options button in the Layers panel, and choose Create Layer Mask From Transparency.
In Corel Painter, you can add transparency to an image using the Transparency tool. There are three transparency tools: Object Transparency, Color Transparency, and Object Transparency Brush.
