Easy Graphics File Converter
2. Converting a Single Image File
When you click on Convert single file the usual file selection dialog box opens, allowing you to specify the file you want to convert. In this example we'll convert the GIF file sunset.gif to JPG, BMP and PNG files.
After clicking on Open the following window appears:
Checking all output file formats gives:
For JPG files the Quality parameter specifies the degree of compression used (100 = none). The smaller the Quality value the smaller the file and the poorer the image quality. 60 to 80 usually provides a good tradeoff between size and image quality.
You can specify a range of quality values (in steps of 5, 10 or 20) so as to produce multiple JPGs with different sizes (see more on this in Optimizing JPG Files)
Click on Convert file and the GIF file is converted to the three other formats. The new files have the same name as the input file (apart from the file extension), except that if a range of qualities is specified then, e.g., "_q60" is appended to show the quality used. The new files are created in the same folder. There is an option — shown above — for displaying a warning if an existing file is about to be overwritten; in this case the conversion can be cancelled or a new filename can be given.
Here is the original GIF image used in this example and the JPG (quality=80) and PNG images resulting from the conversion:
sunset.gif, 70,649 bytes sunset_q80.jpg, 11,417 bytes sunset.png, 65,050 bytes
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