Contact Support & Engineering Desk
Have questions about client-side WebAssembly diffing, encountered an edge-case rendering bug, or inquiring about on-premise air-gapped corporate deployments? We're here to help.
Direct Engineering & User Support
For general inquiries, algorithm troubleshooting, formatting feedback, and partner integrations:
Security & Vulnerability Disclosure
For cryptographic reviews, WebAssembly sandbox audits, and responsible vulnerability reports:
Enterprise & On-Premise Deployments
Custom air-gapped Docker containers, white-label UI packaging, and corporate SLAs for legal firms:
Feature Requests & Bug Tracking
Propose new diffing algorithms, request specialized font encodings, or suggest UI enhancements:
1. Technical Support Service Level Agreement (SLA)
While PdfCompare provides its primary web utilities 100% free of charge without mandatory subscriptions, our dedicated engineering team maintains strict response SLAs for user inquiries:
Severity 1 (Critical)
Zero-day security reports: < 4h response
Severity 2 (Normal)
Rendering bug reports: < 24h response
General Support
Feature suggestions: 1-2 business days
2. Responsible Security Disclosure Policy
We prioritize the privacy and security of our users above all else. If you discover a potential vulnerability in our WebAssembly sandbox or CDN header configuration, we appreciate your cooperation in responsibly reporting it to us before public disclosure.
- Email detailed reproduction steps and browser environment details to hello@pdfcompare.app;
- Provide reasonable time for our core team to patch the issue before disclosing it publicly;
- Refrain from executing automated denial-of-service tests or accessing unauthorized third-party infrastructure.
3. Frequently Asked Support Questions
Why did my complex architectural PDF report an error during rendering?
Some scanned PDFs with non-standard CMYK color profiles or heavily encrypted password protections require decryption before client-side parsing. Try unprotecting the file first or selecting Text Redline mode.
Can I run PdfCompare completely offline without an internet connection?
Yes. Once the web application is loaded in your browser, the service worker caches compiled WebAssembly assets. You can disconnect your network (air-gapped mode) and continue diffing documents with zero loss in performance.