It is free and will always be free. It is offline. It does not collect any data at all. Version 01 is a Python file with some dependencies. I will work on releasing a newer version as a Windows executable, “exe”.
RonsTechHub Free! Watermark Tool v01
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What Is the RonsTechHub Watermark Tool?
The RonsTechHub Watermark Tool is a free Python-based desktop application that lets you add text, image, or combined watermarks to every PDF file in a selected folder.
You don’t need any coding experience — it has a clean, simple GUI (graphical user interface) built with Tkinter.
With just a few clicks, you can:
Add a text watermark (for example: “CONFIDENTIAL”, “DRAFT”, or your company name)
Add an image watermark such as your logo
Combine text and image in one watermark
Control the opacity (transparency) of the image watermark
Choose where the watermark appears (top left, centre, bottom right, etc.)
Automatically watermark all PDFs in a folder
And the best part? It’s completely free, lightweight, and doesn’t need an internet connection to run.
Key Features
✅ 1. Batch PDF Watermarking
The program automatically scans your chosen folder and applies the same watermark to every PDF inside — perfect for bulk processing.
🖋️ 2. Text Watermark
Add professional-looking text to your documents. You can write anything — Confidential, Draft, Final Copy, or even your name or brand.
🖼️ 3. Image Watermark with Opacity Control
Add a logo or watermark image and adjust its opacity using a slider (0–100%).
This allows you to fade the image lightly over the document without covering important content.
🔤 4. Text + Image Mode
Combine both text and image for flexible branding — for example, your company logo at the top and a “Confidential” label at the bottom.
📍 5. 9 Position Options
Choose exactly where you want your watermark to appear:
Top Left, Top Centre, Top Right, Middle Left, Centre, Middle Right, Bottom Left, Bottom Centre, or Bottom Right.
💾 6. Automatic Output Folder
All watermarked PDFs are automatically saved in a new “Watermarked” subfolder, so your originals remain untouched.
System Requirements
To use the RonsTechHub Watermark Tool, you’ll need:
Python 3.9+
Installed libraries:
Works on Windows, macOS, and Linux.
How to Use the RonsTechHub Watermark Tool
Run the program
Choose the folder containing your PDF files.
Select the watermark type:
Text only
Image only
Image + Text
Enter your text and/or select your image logo.
If using an image watermark, adjust the opacity slider.
Choose where to place the watermark (top, middle, bottom).
The program will watermark all PDFs and save them in a new
Watermarkedfolder.
Why Use Watermarks?
Watermarks are essential for:
Protecting intellectual property
Branding documents with your logo
Preventing unauthorised copying or editing
Adding professional credibility to your work
The RonsTechHub Watermark Tool gives you complete control without expensive software like Adobe Acrobat or complex online tools.
Example Use Cases
Protecting intellectual property
Branding documents with your logo
Preventing unauthorised copying or editing
Adding professional credibility to your work
The RonsTechHub Watermark Tool gives you complete control without expensive software like Adobe Acrobat or complex online tools.
Example Output
📁 MyDocuments
├── file1.pdf
├── file2.pdf
├── file3.pdf
└── 📁 Watermarked
├── WM_file1.pdf
├── WM_file2.pdf
└── WM_file3.pdf
Conclusion
If you need a free, reliable, and offline PDF watermarking tool, the RonsTechHub Watermark Tool is the perfect choice.
It’s lightweight, beginner-friendly, and designed for educators, professionals, and creators who value simplicity and control.📥 Download it now from GitHub and start watermarking your PDFs today:
👉 https://github.com/RonsTechHub
About RonsTechHub
RonsTechHub is an educational and technology platform dedicated to making IT, automation, and digital tools more accessible for everyone.
Our free resources, tutorials, and projects are designed to help teachers, students, and tech enthusiasts learn real-world skills in computing and software development.
📺 Visit our YouTube channel for tutorials and demos:
👉 https://www.youtube.com/@RonsTechHub
🌐 Official Website:
👉 https://ronstechhub.com/