Add Watermark to Excel Online Free

Secure your sheets with custom text watermarks.

Related tools: Excel to PDF | Add Serial Number

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Drag & Drop or Click to Upload Excel File

Add Watermark to Excel Online

Adding watermark to Excel files is one of the best ways to protect confidential data and prevent unauthorized sharing. Watermarks help identify ownership and discourage misuse of spreadsheets containing sensitive information.

Why Watermark Excel Files?

  • Protect business spreadsheets
  • Prevent unauthorized distribution
  • Mark documents as confidential
  • Display company ownership
  • Secure financial and employee data

Text Watermark in Excel

This tool inserts watermark text as Excel shapes behind worksheet content. The watermark remains visible even after editing cells and printing sheets.

Custom Watermark Settings

  • Custom watermark text
  • Color selection
  • Opacity control
  • Font size adjustment
  • Diagonal or horizontal rotation

How to Add Watermark to Excel File

  1. Upload XLSX file.
  2. Enter watermark text.
  3. Adjust size, color and opacity.
  4. Preview watermark live.
  5. Download watermarked Excel file.

Supported Excel Formats

  • .xlsx files
  • Multiple worksheets supported
  • Large spreadsheets supported

100% Secure & Private

All watermark processing happens locally in your browser. Files are never uploaded to any server, ensuring complete privacy.

Who Should Use This Tool?

  • Accountants
  • Office professionals
  • Business owners
  • Teachers and students
  • HR departments

Frequently Asked Questions

Is this Excel watermark tool free?
Yes, unlimited usage is free.

Are Excel files uploaded?
No. Files stay on your device.

Can I remove watermark later?
Watermark becomes permanent once saved.

Does it support .xls files?
No. Convert .xls to .xlsx first.