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XLSMicrosoft Excel Binary File Format

Files with XLS extension represent Excel Binary File Format. Such files can be created by Microsoft Excel as well as other similar spreadsheet programs such as OpenOffice Calc or Apple Numbers. File saved by Excel are known as Workbook where each workbook can have one or more worksheets. Data is stored and displayed to users in table format in worksheet and can span numeric values, text data, formulas, external data connections, images and charts.

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How to

  How to add watermark to XLS

  • Open this GroupDocs.Watermark free online tool in your favourite browser.
  • Click inside the file drop area to upload a XLS file or drag & drop a XLS file.
  • Your XLS file will be rendered for you to add text and image watermarks instantly.
  • Add text and image watermarks and setup their properties.
  • Download the updated XLS file with watermarks added.

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 GroupDocs.Watermark for .NET API

Powerful document watermarking .NET library & API.
Integrate this library to your document processing solution and manage watermarks for many document formats!

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 GroupDocs.Watermark for Java API

Java version of GroupDocs.Watermark library & API.
Manage watermarks in your documents in Java!

 GroupDocs.Watermark Cloud

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

Open-Source UI/UX Solutions

 GroupDocs.Total for .NET and Java

GroupDocs.Total is an open-source UI/UX solution where all GroupDocs products are working together as one.
GroupDocs.Total provides multiple high quality features against over 120 document formats, such as conversion, signature, parser and much more!

Other Watermark App supported file formats

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