1. Client-Side Processing
PDFex operates entirely within your web browser. All PDF processing, including merging, splitting, compressing, text extraction, image conversion, and portfolio extraction, is performed locally on your device using client-side JavaScript. No files, data, or personal information are transmitted to our servers or stored anywhere. Your documents never leave your computer, ensuring complete privacy and security.
2. Open Source Technology
PDFex utilizes open-source libraries and technologies, including:
- PDF.js - Mozilla's open-source PDF rendering library (Apache License 2.0)
- jsPDF - Open-source PDF generation library (MIT License)
- JSZip - Open-source ZIP file handling library (MIT License)
- Alpine.js - Lightweight JavaScript framework (MIT License)
All source code and dependencies are publicly available and auditable. The application's core functionality is built upon these transparent, community-maintained open-source projects.
3. PDF Format Standards
PDFex complies with international standards for PDF file format handling:
- ISO 32000 - PDF specification standard (ISO 32000-1:2008, ISO 32000-2:2020)
- PDF/A - Archival PDF standards (ISO 19005 series)
- PDF/UA - Universal accessibility standards (ISO 14289-1:2014)
Our implementation adheres to these established ISO standards to ensure compatibility, reliability, and interoperability with PDF documents across different platforms and applications.
4. Patent Considerations
PDFex operates using technologies and methods that reference expired Adobe patents. Many foundational PDF-related patents held by Adobe Systems Incorporated have expired, including:
- Core PDF rendering and display patents (expired)
- PDF document structure and parsing methods (expired)
- PDF compression and encoding techniques (expired)
The PDF format itself is an open standard (ISO 32000), and the implementation methods used by PDFex rely on publicly available specifications and expired patent technologies, ensuring lawful operation.
5. No Warranties
PDFex is provided "as is" without warranties of any kind, either express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement. We do not guarantee that the service will be uninterrupted, error-free, or completely secure.
6. Limitation of Liability
In no event shall PDFex, its developers, or contributors be liable for any direct, indirect, incidental, special, consequential, or punitive damages arising out of your use of or inability to use this service, including but not limited to data loss, corruption, or unauthorized access.
7. User Responsibility
Users are solely responsible for:
- Ensuring they have the legal right to process the PDF files they upload
- Backing up important documents before processing
- Complying with applicable copyright and intellectual property laws
- Verifying the integrity and accuracy of processed files
8. Data Privacy
Since all processing occurs locally in your browser, PDFex does not collect, store, transmit, or have access to any of your files or personal data. No cookies are used for tracking purposes. No analytics or telemetry data is collected about your usage or files.
9. Service Availability
PDFex is provided as a free service and may be modified, suspended, or discontinued at any time without notice. We reserve the right to update, change, or remove features as needed.
10. Governing Law
This disclaimer shall be governed by and construed in accordance with applicable laws. By using PDFex, you acknowledge that you have read, understood, and agree to be bound by this disclaimer.