# Convert Files

KeyView Export SDK enables you to convert many different types of documents to HTML. Converting is the process of extracting the text from a document without the application-specific markup, and applying HTML markup. The conversion process can also include the following:

- Extracting subfiles to expose all subfiles for conversion. See Subfile Extraction.

- Setting conversion options to determine the content, structure, and appearance of the HTML output. See Set Conversion Options.

- Extracting the file's format to detect a file's format, and report the information to the API, which in turn reports the information to the developer's application. See Extract File Format Information.

- Extracting metadata (document properties) from a file. See Extract Metadata.

- Converting character sets to control the character set of both the input and the output text. See Convert Character Sets.

- Implementing callbacks to control the conversion while it is in progress. See HTML Export API Callback Functions.

You can use one of the following methods to convert documents:

- Use the C-language implementation of the API from your C or C++ application. See Use the C-Language Implementation of the API.

- Use the C sample programs. See Sample Programs.

  NOTE: Micro Focus strongly recommends that you convert documents out of process. During out-of-process conversion, Export runs independently from the calling application. Out-of-process conversions protects the stability of the calling application in the rare case when a malformed document causes Export to fail. Convert Files Out of Process.

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