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Editorial Team
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Asked: 2026-06-14T00:27:53+00:00

My Java EE web app uses XSLT transformation to produce CSV reports. If I

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My Java EE web app uses XSLT transformation to produce CSV reports.
If I specify “UTF-16” as the encoding on the XSLT (which seems to be the only way to handle accented characters in the XML) then I get a byte-order-mark character at the start of the CSV output

From what I understand, this is correct behavior. The problem is that this BOM character is visible if the CSV is opened in Excel (appears as: þÿ), but not if I open it in a proper text editor 😉

How can I hide or omit this character so it isn’t visible when the file is opened in Excel?

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1 Answer

  1. Editorial Team

    You forgot to specify which version of XSLT you are using.

    If you are using XSLT 2.0, you can suppress the BOM using the xsl:output element. For example…

    <xsl:output method="xml" byte-order-mark="no" encoding="UTF-16" indent="yes" omit-xml-declaration="yes" />

    What if you are using XSLT 1.0?

    Here are two options:

    1. Upgrade to XSLT 2.0
    2. Upgrade your Excel to 2007 (See here for why)
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