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for large bitmaps as the viewer sees the basics of the bitmap more quickly.
Progressive
- applies only to JPEG. This is similar to Interlaced in that a progressive JPEG displays with increasing
detail as more of the file downloads.
Quality
JPEG only. JPEG format compresses files by discarding unnecessary information. Quality controls how
much information is discarded. Default is 80%, which usually gives the best balance of quality and file
size. Above 80% produces larger files with little improvement in quality.
Below 75% the quality loss may be noticeable and you may need to use a higher setting. Our advice for
the best results is use the lowest quality setting that gives acceptable results.
File size
This tells you the size of the bitmap with the current settings. The smaller the file size, the faster it will
download over the Internet.
Preview window
This shows you how the exported bitmap will look with the current settings. It is a useful check that you
have selected the best settings for this particular graphic.
Export options for JPG
JPEG bitmaps are always 24-bit, true color, but the JPEG compression system means that the quality is
often not as good as a GIF. The quality setting determines how small the resultant file is?the higher the
quality, the larger the file. Quality settings less than 80% usually produce inferior images to those available
from using palette optimized GIFs.
A progressive JPEG is similar to an interlaced GIF. The JPEG displays first as blurred (low resolution)
image. As more of the file loads, the image comes into focus. Note that some older browsers do not
support progressive JPEGs?the image displays when all the JPEG has loaded.
Export options for animated cursors (ANI)
To learn more about creating cursors see creating cursor (CUR & ANI) files.
Because animated cursors can be quite large, you may find that a 16 color, optimized palette per frame,
produces the best results for the smallest file size. However you might need to experiment.
Dithering always makes cursors look better, but also makes them larger. When outputting at 256 colors
you may find that there is no need to turn dithering on.
Current window size lets you export just the area surrounding the text (Crop on) or the entire window
area (Crop
off).
User defined lets you specify the dimensions of the bitmap. With Fit to width
(on the text toolbar) selected, the text and the background scales to suit the values you type in. If you
specified a font size, the size of the text does not change but the background scales to the values you type
in. This is useful if you want to create several headings, all the same height and width.
Export options for animated GIFs
To learn more about exporting animated GIFs see creating animations
.
Because animated GIFs can be quite large, you may find that a 16 or 32 color, optimized palette per
frame, produces the best results for the smallest file size. However you might need to experiment.
Dithering always makes GIFs look better, but also makes them larger. When outputting at 256 colors
you may find that there is no need to turn dithering on.
Current window size lets you export just the area surrounding the text (Crop on) or the entire window
area (Crop
off).
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