QudoPDF Product Documentation
QudoPDF is a fully local PDF utility that handles both watermarking and signing in one place. You can add text or image watermarks with full control over tiling, rotation, and opacity. For signatures, you can draw by hand, type, or upload an image. Throughout the entire process, your files never leave your device.
1. Product Overview
QudoPDF is a locally run PDF utility designed for individuals and teams. It focuses on two core capabilities: adding watermarks to PDFs and signing/annotating PDFs. The tool runs entirely on your local device, so files never need to be uploaded to any server. This makes it suitable for handling contracts, proposals, work documents, and other materials where privacy and security matter.
2. Core Features
| Module | Capabilities | Typical Use Cases |
|---|---|---|
| PDF Watermark | Supports text or image watermarks, with tiling, rotation, opacity, and position adjustments | Contracts, proposals, internal documents |
| PDF Signature | Supports handwritten, typed, or uploaded signature images | Electronic signatures, approval documents |
| Form Filling | Supports entering text, dates, and symbols | Application forms, confirmation sheets, work documents |
| Local Processing | Files are processed locally without cloud upload | Privacy-sensitive document handling |
3. Watermark Feature
QudoPDF allows you to add text or image watermarks to PDF pages, with the following options:
- Text watermark: Customize the watermark text;
- Image watermark: Upload a local image to use as a watermark;
- Tiling: Repeat the watermark across the page;
- Rotation: Adjust the watermark angle;
- Opacity: Control watermark intensity so it does not obscure the main content;
- Position: Set where the watermark appears on the page.
4. Signature and Filling Feature
QudoPDF provides multiple ways to sign and fill documents:
- Handwritten signature: Draw your signature with a mouse or touch device;
- Typed signature: Enter text to generate a signature style;
- Image signature: Upload an existing signature image and insert it into the PDF;
- Content filling: Add text, dates, symbols, and other information to the document.
5. Local Processing
QudoPDF reads, edits, and exports PDF files locally. The entire processing workflow does not upload files to remote servers. For documents involving contracts, quotations, proposals, HR materials, client information, or other sensitive content, this helps reduce the risk of data exposure.
6. Workflow
- Open QudoPDF;
- Import the PDF file you want to process;
- Choose “Add Watermark” or “Sign / Fill”;
- Configure the watermark style or signature content as needed;
- Preview the result and export the processed PDF.
7. Target Users
- Individuals who need to quickly add watermarks to PDFs;
- Professionals who handle contracts, proposals, quotations, and other work documents;
- Teams with higher requirements for file privacy and data security;
- Users who want to avoid tedious steps such as screenshots, collage, and re-layout.
8. Product Positioning
QudoPDF is positioned as a lightweight, local, and easy-to-use PDF watermark and signature tool. It helps users complete common PDF tasks quickly without relying on complex software or uploading files to the cloud.
github: Qudo Tool PDF