Upload your PPT or PPTX file and add a watermark
Add a watermark to every slide in your PowerPoint presentation with just one click. Upload your PPT or PPTX file, choose a PNG or JPG watermark image, and our tool applies it to all slides automatically. The watermark is placed slightly tilted in the center of each slide with 50% opacity for a professional, branded look.
Why our PowerPoint Watermark Tool
Adding a watermark to a PowerPoint file has never been easier. Upload your PPT or PPTX, pick your watermark image, and download the result. No software to install, no account to create.
Protect your PowerPoint files with a watermark

100% Online and Free: No Software Needed

Safe and secure processing

Discover the Power of our Free Watermark Tool
Add a watermark to any PowerPoint presentation in seconds — no software, no signup.
Precise watermark placement
Your watermark is placed exactly in the center of every PowerPoint slide, slightly tilted with 50% opacity. Every slide in your PPT or PPTX gets the same consistent, professional watermark.
Works with any language
Our watermark tool works with presentations in any language. Your PowerPoint content stays completely unchanged — only the watermark image is added on top of each slide.
Lightning-fast processing
Your PPT or PPTX file is watermarked in seconds. Upload, pick your watermark image, and download the result — all with a single click.
PNG and JPG watermarks
Upload your watermark as a PNG or JPG image. Logos, brand marks, draft stamps, confidential labels — any image works as a watermark for your PowerPoint slides.
Secure and private
Your PowerPoint files are encrypted during upload and processing. We never share your presentations with third parties, and all files are automatically deleted after watermarking.
No account required
Add a watermark to your first PowerPoint presentation without signing up. Upload, watermark, and download — completely free.
Explore our other tools
Experience the convenience of our free online tools. Our AI tools powered by ChatGPT provide excellent results.
Presentation Length Calculator
Calculate the length per slide for your presentations and PowerPoints.
PowerPoint Compressor
Compress your PowerPoint files and optimize the size of it for easier sharing.
Frequently Asked Questions
Learn how to add a watermark to your PowerPoint presentations to protect and brand your slides.
Want to create presentations with AI in seconds?
Try SlideSpeak today. Generate presentations with AI from PDFs, Word and other data. It's never been easier.