Preview
In Workspace, you can click on the
"Preview" tab to preview the most realistic performance of the currently designed
banner in a web browser. Baner Maker supports exporting banners in GIF, PNG, and
JPG web image formats, which are then loaded by the browser.
GIF Compression
GIF uses the Lempel-Ziv-Welch (LZW) compression method to store and reduce single
or multiple images within the file by up to 40% of their original size. These images
can contain up to 256 colors, and do not lose its original quality during compression.
Although GIF is a "lossless" format, the conversion of imported images to GIF format
may lose some of their quality in the transition from True Color to 256-color. This
allows users to create clear backdrops for their images, letting a Web page's background
colors show through. GIF also supports image interlacing, allowing users to watch
the image "fade-in" as it downloads.
- Colors Count: Specify how many colors the generated
GIF file contains, up to 256 colors.
- Matte Color: This color is filled in the area where
the image is not completely transparent. Usually the background color of the browser
is also set to this color.
- Dither: a method of creating new shades or colors
from a pattern of preexisting shades or colors. Setting the intensity value at 100
gets the best color gradient result for photo realistic images. Setting it at 0
works best for line art images. When working with file size constraints, it's best
to set dither at a low value. When deselect the option "Dither Needed", It is just
same as to set intensity at 0.
- Loop Forever: Check this option and the generated
animation will loop in the browser.
- Loop Times: Used to specify the number of times the
generated animation is limited to play in the browser.
- Save Whole Animation: Save the whole image frames
to an animation if it has more frames.
- Save Active Frame: save the active frame to a static
GIF image.
JPG Compression
JPG is a commonly used method of compression for photographic images. The degree
of compression can be adjusted, allowing a selectable tradeoff between storage size
and image quality. JPEG typically achieves 10:1 compression with little perceptible
loss in image quality. JPEG compression is used in a number of image file formats.
JPEG/Exif is the most common image format used by digital cameras and other photographic
image capture devices; along with JPEG/JFIF, it is the most common format for storing
and transmitting photographic images on the World Wide Web. These format variations
are often not distinguished, and are simply called JPEG.
- Subfile type: Select from available subfile types.
Depending on the current Colors selection, various subfile types are available.
- Matte Color: This color is filled in the area where
the image is not completely transparent.
- Quality: JPG compression always loses some image quality.
Quality specifies the quality of the compressed image, where 100 is the highest
and 1 is the lowest. The higher the image quality adjustment, the longer it takes
to convert and save the file.
- Progressive: Progressive JPG files are the same as
regular JPG files, but the image displays at full size as quickly as possible, and
clarifies as it is loaded.
- Photometic: Specify whether to choose RGB color space
or Ycbcr color space.
PNG Compression
For the Web, PNG really has three main advantages over GIF: alpha channels (variable
transparency), gamma correction (cross-platform control of image brightness), and
two-dimensional interlacing (a method of progressive display). PNG also compresses
better than GIF in almost every case, but the difference is generally only around
5% to 25%, not a large enough factor to encourage folks to switch on that basis
alone. One GIF feature that PNG does not try to reproduce is multiple-image support,
especially animations; PNG was and is intended to be a single-image format only.
- Filters: PNG standardizes a number of filter methods
and filter types that may be used to prepare image data for compression. Filtering
transforms the byte sequence in a scanline to an equal length sequence of bytes
preceded by a filter type byte.
- Compression Level: Specify a compression level of
up to 8. The higher the level, the smaller the image size.
- Interlace: Pass extraction splits a PNG image into
a sequence of reduced images (the interlaced PNG image) where the first image defines
a coarse view and subsequent images enhance this coarse view until the last image
completes the PNG image.