No information is lost during the conversion, the new file contains all information that was present in the original.
For example when converting a raster image from TIFF to PNG .
It occurs when the new file no longer contains all of the information that was present in the original. This happens when the target format compresses the data in a lossy manner or is not able to display all of the information of the original.
For example, converting an audio file from WAV to MP3 is lossy. The reverse process, from MP3 to WAV, is lossless. The conversion of a color image into a grayscale image is also lossy (and vice versa). Or conversion of HTML into a text file: Here all formatting is lost.
With this type of conversion, data is converted “in accordance with the spirit ”, ie while retaining the content that is considered essential. This can be done with or without loss of information; the file can also be enriched with information from additional sources during the conversion.
↑ Bernward Mütterlein: Manual for programming with LabVIEW. 2nd edition, Spektrum Akademischer Verlag, Heidelberg 2009, ISBN 978-3-8274-2337-5 , pp. 209-210.
↑ Björn Schüßler, Roman Seer (ed.): The data access of the financial administration in the context of the (digital) external audit. Peter Lang Internationaler Verlag der Wissenschaften, Frankfurt 2010, ISBN 978-3-631-60994-1 , p. 96.