Add Watermark to XLSX File

In the age of digital documentation, protecting sensitive data and intellectual property is paramount. For Excel users working with financial statements, inventory sheets, project trackers, or internal reports, watermarking is a simple yet powerful way to secure content and maintain brand integrity. Enter Add Watermark to XLSX File — a specialized tool that allows users to insert watermarks into Excel workbooks, with full control over appearance, positioning, and transparency.

Add Watermark to XLSX File is a dedicated utility that automates the process of adding watermarks to Excel spreadsheets. The tool allows users to insert image or text-based watermarks that appear behind cell content, across multiple sheets. With the Preview Panel, users can see exactly how their watermark will appear in the Excel document before the watermark is applied.

The tool is designed to apply custom watermarks across various MS Excel file formats with/without password protection, such as: xls, xlsb, xlsm, xlsx, xlt, xltm, xltx

There are two main types of watermarks supported by our tool:

Text Watermark:

Add watermark text like “Confidential”, “Draft”, or a company name.
Supports multi-line text.
Unicode support for multilingual text.
Choose from a wide range of fonts.
Adjust font size, color, alignment and styles.

Image Watermark:

Add your company logo or official stamp to reinforce authenticity and branding.
Support a wide range of image file formats: avif, bmp, dib, emf, gif, heic, heif, ico, jpeg, jpg, png, psd, svg, tga, tif, tiff, webp, wmf.

Each type of watermark (text/image) can be customized for options such as:

Position on the page (horizontal/vertical alignment).
Rotation angle (e.g., -45° diagonal).
Opacity level (transparency-level).
Scale (resize).

One of the most powerful features in this tool is the Preview Panel, enhanced with zoom in/out capabilities — an interactive thumbnail of how your watermark will appear on a sample spreadsheet page — before applying it to your actual files.

Users can add watermarks to entire document (all sheets) or custom sheets. This capability provides a level of control and customization ideal for business, academic, and creative purposes.

For custom sheets, typing sheet numbers and/or sheet ranges separated by commas. For example: 1-3,5,6-9