Export bitmaps for the web

To adjust the object-export preview

To export a web-compatible bitmap

To resize an object when exporting a web-compatible bitmap

To customize options for exporting a JPEG bitmap

To specify display-quality options for exporting web-compatible bitmaps

To specify color settings for exporting palette-based web-compatible bitmap

CorelDRAW lets you export documents to the following web-compatible file formats: GIF, PNG, and JPEG.

While specifying exporting options, you can preview an image with up to four different configurations of settings. You can compare file formats, preset settings, download speeds, compression, file size, image quality, and color range. You can also examine previews by zooming and panning within the preview windows.

 

 

Component
Description
1. Preview window
Displays a preview of the document.
2. Preview modes
Lets you preview the adjustments in a single or split frame.
3. Zooming and panning tools
Lets you zoom in and out of a document displayed in the preview window, pan an image displayed at zoom level higher than 100%, and fit an image in the preview window.
4. Preset list box
Lets you choose preset settings for a file format.
5. Export settings
Lets you customize export setting, such as color, display options, and size.
6. Format information
Lets you view file-format information, which is available for each preview frame.
7. Speed list box
Lets you choose an Internet speed for saving the file.

You can export web-compatible files using preset settings. This allows you to optimize the file, without the need to modify individual settings. You can also customize the settings to produce a specific result. For example, you can adjust its color, display quality, and file size.

Choosing a web-compatible file format

This table is a quick reference for choosing a web-compatible file format.

 

File format
Ideal for
GIF
Line drawings, text, images with few colors, or images with sharp edges, such as scanned black-and-white images or logos.
GIF offers several advanced graphic options, including transparent backgrounds, interlaced images, and animation. It also lets you create custom palettes for the image.
PNG
Various image types, including photos and line drawings.
The PNG file format (unlike the GIF and JPEG formats) supports the alpha channel. This allows you to save transparent images with superior results.
JPEG
Photos and scanned images.
JPEG files use file compression to store an approximation of an image, which results in some loss of image data, but does not compromise the quality of most photographs. You can choose the image quality when you save an image — the higher the image quality, the larger the file size.

Exporting palette-based documents

Palette-based documents, such as paletted GIF and 8-bit PNG, allow individual pixels to retain their exact color value. This lets you control the display of colors in the file when exporting. Palette-based documents also allow you to introduce transparency to a file by choosing a color in the image and making it transparent. For information, see Export objects with transparent colors and backgrounds.

To adjust the object-export preview Back to Top

 

To
Do the following
View the bitmap in a single preview frame
Click the Full preview button .
View two versions of the bitmap in side-by-side frames
Click the Two vertical previews button .
View the two versions of the bitmap with one frame placed above the other
Click the Two horizontal previews button .
View four versions of the bitmap in separate frames
Click the Four previews button .
Fit a bitmap in the preview window
Click the Zoom to fit button .
Display each pixel in the image data to a single pixel on-screen
Click the Zoom 1:1 pixel button .
Display a bitmap at its actual size
Click the Zoom to actual size button .
Pan to another area of the bitmap
Using the Pan tool , drag the image until the area you want to see is visible.
Zoom in and out
Using the Zoom in tool or Zoom out tool , click in the preview window.
Change the display options for the object in a preview frame
Click a frame, then choose different export settings from the export settings area.
To export a web-compatible bitmap Back to Top

 

You can also
 
Choose a color mode
In the Settings area, choose a color mode from the Color mode list box.
This option is unavailable for the GIF file format.
Embed the color profile
In the Advanced area, enable the Embed color profile check box.

*

You can choose an Internet connection speed from the Speed list box at the bottom of the dialog box.

You can also export to a web-compatible format by clicking File Export, and choosing a file format from the Save as type list box.

To resize an object when exporting a web-compatible bitmap Back to Top

 

To
Do the following
Choose a unit of measurement for the bitmap
Choose a unit of measurement from the Units list box.
Specify the bitmap dimensions
Type values in the Width and Height boxes.
Resize the bitmap to a percentage of its original size
Type values in the Width % and Height % boxes.
Avoid distortion by maintaining the width-to-height ratio of the bitmap
Enable the Maintain aspect ratio check box.
Specify the bitmap resolution
Type a value in the Resolution box.
Maintain the size of the file on your hard disk when you change the resolution of the bitmap
Enable the Maintain size check box.
To customize options for exporting a JPEG bitmap Back to Top

 

To
Do the following
Control document quality
In the Settings area, choose a quality option from the Quality list box, or type a percentage value.
Choose an encoding setting
In the Settings area, choose an option from the Sub-format list box.
Blur the transition between adjacent pixels of different colors
In the Settings area, type a value in the Blur box.
Load the JPEG file gradually in certain web browsers to display only portions of the image before it finishes loading
In the Advanced area, enable the Progressive check box.
Use the optimal encoding method to produce the smallest JPEG file size
In the Advanced area, enable the Optimize check box.

 

You can also
 
Apply the document-color settings
In the Advanced area, enable the Use document color settings option.
Apply the color-proof settings to the document
In the Advanced area, enable the Use color proof settings option.
Enable the overprinting of black when exporting to CMYK
In the Settings area, enable the Overprint black check box.
Apply a matte color to the object’s background to help blend the edges of anti-aliased objects
In the Settings area, open the Matte color picker, and click a color.
To specify display-quality options for exporting web-compatible bitmaps Back to Top

 

To
Do the following
Apply a matte color to the object’s background to help blend the edges of anti-aliased objects
In the Settings area, open the Matte color picker, and click a color.
Smooth the edges of the object
In the Advanced area, enable the Anti-aliased check box.
Load the file gradually in certain web browsers to display only portions of the image before it finishes loading
In the Advanced area, enable the Interlaced check box.
This option is unavailable for the JPEG file format.
To specify color settings for exporting palette-based web-compatible bitmap Back to Top

 

To
Do the following
Choose a color mode
In the Settings area, choose a color mode from the Color mode list box.
This option is unavailable for the GIF file format.
Choose a color palette
In the Settings area, choose a palette from the Color palette list box.
This option is only available for the GIF or Paletted 8-bit PNG file formats.
Specify a dithering setting and amount
In the Settings area, choose a dithering option from the Dithering list box, and type a value in the box.
This option is only available for the GIF or Paletted 8-bit PNG file formats.
Embed the color profile
In the Advanced area, enable the Embed color profile check box.

 

You can also
 
Load a color palette
In the Settings area, click the arrow next to Color palette list box, and click Load palette.
This option is only available for the GIF or Paletted 8-bit PNG file formats.
Sample a color and add it to a color palette
In the Settings area, click the Eyedropper, and then click in the drawing window to choose a color. Click the Add the sampled color to palette button .
This option is only available for the GIF or Paletted 8-bit PNG file formats.
Add or modify colors
Double-click a color swatch on the color palette.
This option is only available for the GIF or Paletted 8-bit PNG file formats.
Choose the number of colors that you want to display
In the Settings area, choose a value from the Number of colors list box.
This option is only available for the GIF or Paletted 8-bit PNG file formats.
Delete a color from the color palette
In the Settings area, click a color on the color palette, and then click the Delete the selected color button.
This option is only available for the GIF or Paletted 8-bit PNG file formats.

*

You can also add transparency to a palette-based document by choosing a color in the image and making it transparent. For information, see Export objects with transparent colors and backgrounds.

The features documented in the Help are available in the full version of CorelDRAW Graphics Suite 2020. Some features may not be available in this version of the product.

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