Add Watermark to PPTX Files

In today’s digital era, protecting content integrity and maintaining brand identity in visual materials has become more critical than ever. PowerPoint presentations, widely used for business, education, marketing, and internal communication, are often shared across networks or with external stakeholders. If you want to prevent unauthorized reuse, enforce confidentiality, or simply reinforce branding, adding a watermark to your PowerPoint file is an effective and professional solution.

Add Watermark to PPTX Files allows users to insert text-based and image-based watermarks into PowerPoint files with a preview feature before saving. The tool includes more customization and professional layout controls to ensure the watermark fits seamlessly into the slide design.

The tool is designed to apply custom watermarks across multiple PowerPoint file formats with password protection, such as: potm, potx, ppsm, ppsx, pptm, pptx

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

Text Watermark:

Input any desired text: "Confidential," "Draft Copy," "Company XYZ," etc.
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.
Adjustable brightness and contrast.

Among the various watermarking techniques available, tiled (repeated) watermarking stands out as one of the most effective ways to protect powerpoint files. Unlike a single watermark placed in one corner or the center of a slide, a tiled watermark repeats across the entire slide, making it extremely difficult to remove or ignore. This feature is applied for both text and image watermark.

An advanced feature that brings a subtle but visually strong enhancement is the border lines. Users can insert it to both text and image watermarks. This feature includes options for dash style, line style, thickness, and color customization.

Each type of watermark (text/image) can be customized for placement (horizontal/vertical alignment), rotation, opacity (transparency-level), is background/foreground (behind/in front of content) and scale (resize).

Especially, our tool includes the preview panel (zoom and pan) that lets users inspect how the watermark will appear on each selected slide. If the design doesn’t work for a particular layout, they can refine the settings accordingly.

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

For custom slides, typing slide numbers and/or slide ranges separated by commas. For example: 1,3,5-10,14,20-31