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. 

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.

Both text and image watermark are tiled watermark - a watermark pattern that repeats across the entire worksheet instead of appearing once in the center. This repetition ensures that the watermark remains visible regardless of scrolling, zooming, printing, or copying.

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).

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

Features:

• Drag-and-drop interface for easy file selection.
• Support multiple Excel file formats with password protection.
• Support for both text and image watermarks.
• Tiled (repeated) watermark pattern covers the full worksheet area.
• Support multiple image formats.
• Full customization: font, size, opacity, color, rotation, position, etc.
• Custom sheet selection: Choose specific sheets to watermark.
• Export watermarked files without losing original format fidelity.