Free Online XLSX Watermark App

Add text watermark to your document online from anywhere

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watermark to document

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XLSXMicrosoft Excel Open XML Spreadsheet

XLSX is well-known format for Microsoft Excel documents that was introduced by Microsoft with the release of Microsoft Office 2007. Based on structure organized according to the Open Packaging Conventions as outlined in Part 2 of the OOXML standard ECMA-376, the new format is a zip package that contains a number of XML files. The underlying structure and files can be examined by simply unzipping the .xlsx file.

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How to

 How to add watermark to XLSX document using GroupDocs Watermark App

  • Click inside the file drop area to upload a XLSX file or drag & drop a XLSX file.
  • "Add watermark text and select font, color and size or drop or upload an image if watermark type is Image."
  • Click Add Watermark.
  • Download updated document with watermark added.
  • You may also send the download link to any email address by clicking on Email button.

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 GroupDocs.Watermark for .NET API

Flexible document watermarking .NET library & API.
Build your document watermarking solution with this easy to use API!

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Easy to use cross-platform Cloud solution.
Add watermarks using Cloud API easily using cURL or existing programming SDKs!

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Other Watermark file formats

You can also add watermark to many other file formats. Please see the list below.