# Key to Document Reader Tables

The tables in this section provide the following information:

- The file formats supported by the Filter API, Export API, Viewing API, and File Extraction API. The supported versions and the format’s extension are also listed. All of the formats listed in this section can be detected by the KeyView format detection module (`kwad`). For a complete list of formats that can be detected, see Supported Formats.

- The file formats for which KeyView can detect and extract the character set and metadata information (properties such as title, author, and subject).

  Even though a file format might be able to provide character set information, some documents might not contain character set information. Therefore, the document reader would not be able to determine the character set of the document. In this case, either the operating system code page or the character set specified in the API is used.

- The document reader used to filter each format.

Key to Document Reader Tables

Symbol | Description
--- | ---
Y | The format is supported. You can extract metadata for this format. You can determine the character set for this format.
N | The format is not supported. You cannot extract metadata for this format. You cannot determine the character set for this format.
P | Partial metadata is extracted from this format. Some non-standard fields are not extracted.
T | Only text is extracted from this format. Formatting information is not extracted.
M | Only metadata (title, subject, author, and so on) is extracted from this format. Text and formatting information are not extracted.

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