1.6 I can describe what file format to use for saving images to suit different presentation methods
Jpg images are very popular, used on websites and are described as lossy. SVG and PNG aren’t as popular but have big uses.
See this article below to help you answer this task:
Additional information There are a large number of proprietary and incompatible graphic formats. For photographic images that are to be displayed in web pages .jpg should be used. Jpg (Jpeg) trades off quality against size of file. If a large high resolution image is required for professional photographic work on paper .jpg files will still be large and once reduced in file size cannot be brought back to the original size without the original file. Another disadvantage of jpg is that it does not support image transparencies such that the background can show through. This means logos can be left with undesirable border around them if they are on a background that is a different colour from the main display background. PNG can be used to get around this problem because png does support transparency. Although .png files are compressed they always keep all the original data so that you can get back to the original. This means in situations where it is critical to make the file size as small as possible (e.g. when the image has to be transferred over a low bandwidth connection or storage space is at a premium, jpg will be better. GIMP can edit and convert a very wide range of images between proprietary and open formats and it is free. On-line convertors are also freely available. SVG - scalable vector graphics - should be used to design instruction manuals using diagrams and illustrations. Indeed just about anything that is not a photograph or scanned image. Any .svg image is likely to be small in file size and can be scaled to any output device from high resolution images for paper to large screen TVs. The files stay the same size and the images will be as crisp as the display device is capable of producing. Furthermore, .svg images can be exported to .png from Inkscape and from .png converted to jpg if required in those formats. An increasing number of applications support SVG and it is likely to become increasingly important.
Fill out the “why?” and “Disadvantages of this file format” column in the table below to demonstrate that you know what file formats to use for different reasons.
See this article below to help you answer this task:
Additional information There are a large number of proprietary and incompatible graphic formats. For photographic images that are to be displayed in web pages .jpg should be used. Jpg (Jpeg) trades off quality against size of file. If a large high resolution image is required for professional photographic work on paper .jpg files will still be large and once reduced in file size cannot be brought back to the original size without the original file. Another disadvantage of jpg is that it does not support image transparencies such that the background can show through. This means logos can be left with undesirable border around them if they are on a background that is a different colour from the main display background. PNG can be used to get around this problem because png does support transparency. Although .png files are compressed they always keep all the original data so that you can get back to the original. This means in situations where it is critical to make the file size as small as possible (e.g. when the image has to be transferred over a low bandwidth connection or storage space is at a premium, jpg will be better. GIMP can edit and convert a very wide range of images between proprietary and open formats and it is free. On-line convertors are also freely available. SVG - scalable vector graphics - should be used to design instruction manuals using diagrams and illustrations. Indeed just about anything that is not a photograph or scanned image. Any .svg image is likely to be small in file size and can be scaled to any output device from high resolution images for paper to large screen TVs. The files stay the same size and the images will be as crisp as the display device is capable of producing. Furthermore, .svg images can be exported to .png from Inkscape and from .png converted to jpg if required in those formats. An increasing number of applications support SVG and it is likely to become increasingly important.
Fill out the “why?” and “Disadvantages of this file format” column in the table below to demonstrate that you know what file formats to use for different reasons.