A filter configuration is a set of instructions that tells Lingotek how to extract the text that should be translated from coded content. This coded content could include text from an HTML webpage, or on-screen text from a computer program written in JAVA or C#.
For example, when you upload an HTML file to Lingotek, not all of the content in the file needs to be translated. The filter will identify which parts of the file's content is "code" and should not be translated (e.g. <link rel="shortcut icon" href="/favicon.ico" />) and which parts of the file's content are relevant for translation (e.g. on-screen text, menu items, and text strings).
Once the translation is ready, Lingotek places the translated content back into the code, rebuilding a translated version of the page.