Specify encoding when loading documents Leave feedback

This feature is supported for the following file types:

• Plain-text (.txt) files
• Comma-separated values (.csv)
• Tab-separated values (.tsv)
• E-Mail Message (.eml)

Different encodings use different byte sequences for characters, and opening a file in the wrong encoding leads to incorrect character rendering. To properly render a file, the correct encoding must be specified when opening the file. Another option is converting it to UTF-8 beforehand. By default GroupDocs.Viewer using UTF-8 encoding.

For examle, when you try to open sample-shift-jis.txt file in Notepad the text これはShift_JISエンコード用のサンプルテキストです。 will appear as strange symbols because ANSI is misinterpreting the byte values that are specific to Shift_JIS.

To render text file properly you can set charset using LoadOptions class. In the following code snippet we’ll set Shift_JIS charset and render the text file to HTML:

import com.groupdocs.viewer.Viewer;
import com.groupdocs.viewer.options.HtmlViewOptions;
import com.groupdocs.viewer.options.LoadOptions;

import java.nio.charset.Charset;

// ...

// Specify charset.
LoadOptions loadOptions = new LoadOptions();
loadOptions.setCharset(Charset.forName("Shift_JIS"));

// Render a file.
try (Viewer viewer = new Viewer("sample-shift-jis.txt", loadOptions)) {
    HtmlViewOptions viewOptions = HtmlViewOptions.forEmbeddedResources();
    viewer.view(viewOptions);
}

The following image demonstrates the result: