Watermarko

Watermarko is a specialized, high-precision utility designed to give users complete control over PDF document watermarking. The core business problem it addresses is that standard PDF watermarking tools often lack the precision needed for professional, legal, or corporate documents. Users are typically forced into rigid placements, limited styling options, and poor scaling controls, which can obscure important text or look unprofessional. To solve this, I developed a lightweight, highly customizable web application using Python and a Streamlit frontend. My methodology involved leveraging robust native Python PDF processing libraries to handle document binaries securely and efficiently. I designed the UI/UX to provide real-time feedback, allowing users to fine-tune custom horizontal and vertical spacing, adjust precise margin scaling (top, bottom, left, right), and apply full typographic customization including font size and color. The outcome is a streamlined document protection workflow that provides a highly customizable alternative to rigid enterprise PDF tools. By keeping the processing logic efficient and the interface intuitive, Watermarko demonstrates advanced manipulation of PDF binaries while delivering a seamless user experience for professionals needing reliable document security.

Key Features