Trados-Tagged RTF Filter

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The Trados-Tagged RTF Filter is an Okapi component that implements the IFilter interface for RTF files prepared with the Trados translation layer of styles.

Warning: This is a filter for READING ONLY. You will not be able to merge back extracted data with this filter.

A Trados-Tagged RTF document is an RTF file that has special styles associated to different parts of the content and has segmentation markers.

Note that a "normal" RTF file translated with Trados and showing segments is not a full Trados-Tagged RTF because the formatting information are true RTF codes rather than some code inside the text with the tw4wInternal style. That is: you see the selected text in bold rather than see the <b> and </b> tags. An example of Trados-Tagged RTF is an HTML document where all the HTML tags are visible and are marked with either the tw4wInternal (red) or tw4wExternal (gray) style.

Processing Details

Input Encoding

The filter decides which encoding to use for the input document using the following logic:

  • The document has encoding information defined for each font in the document. The default encoding is also normally declared in the document.
  • If there is no default encoding declared, the encoding specified by the user is used as the default.


Only the text marked by the Trados segmentation markers is taken into account. Any text outside the segments markers is ignored and concidered non-translatable.


This filter has no parameters.


  • This is a READING ONLY filter. This filter does not generate an output corresponding to the input. It must be used for input only.
  • The filter understands only inline codes that are represented with Trados styles (not RTF with "normal" formatting).