Learn about our Data Processing Policy and technical architecture with zero server dependency

🔒Core Principle: Client-Side Processing

Our HEIC to PDF tool uses a complete client-side processing technical architecture, ensuring your files and data always remain on your device and never leave your browser.

Data Processing Flow

📱

1. File Selection

You select image files in your browser

⚙️

2. Local Convert

Files are converted to PDF in your browser

💾

3. Local Download

Converted PDF downloads directly to your device

Data We Do NOT Store

❌ We absolutely do NOT collect or store the following data:

•
Your Image Files
All HEIC, JPEG, PNG, WebP and other image files are never uploaded to our servers
•
Converted PDF Files
Generated PDF files only exist in your browser memory and local download folder
•
File Content and Metadata
We cannot view or access your file content, EXIF data, or any other information
•
Personal Identity Information
No account registration required, no collection of names, emails, phone numbers, etc.

Technical Architecture Principles

🎯 Technical Design Goals

Our technical architecture design follows these principles:

Zero Server Dependency - File processing completed entirely on the client side
Stateless Design - No storage of any user data or session information
Minimal Data Transfer - Only load necessary code and resources
Offline Capability - Works in environments without network after loading

Technical Implementation Details

🌐 JavaScript Technology Stack

• Canvas API - Image rendering and processing
• File API - Local file reading
• Blob API - Binary data processing
• PDF-lib - PDF document generation

🔄 Memory Management Strategy

• Streaming processing for large files
• Timely release of temporary objects
• Garbage collection optimization
• Memory usage monitoring

⚙️ Core Algorithm Flow

File Reading

Format Parsing

PDF Generation

Download Output

Security Measures

🔐 Transmission Security

• HTTPS/SSL encrypted transmission
• Modern security protocols
• Man-in-the-middle attack prevention

🛡️ Code Security

• Open source algorithms and libraries
• Regular security audits
• No malicious code guarantee

Comparison with Traditional Services

Feature	Our Service	Traditional Online Services
File Upload	❌ Not Required	✅ Required
Privacy Risk	❌ No Risk	⚠️ Risk Exists
Network Dependency	✅ Offline Capable	❌ Network Required
Processing Speed	⚡ Faster Local Processing	⏳ Depends on Network Speed
File Size Limit	✅ Limited Only by Device Memory	❌ Strict Limitations

Frequently Asked Questions

Q: Are my files really not uploaded to servers?

A: Yes, absolutely not. You can disconnect from the internet after continuing to use the convert feature (except for initial page loading), proving that file processing is completely local.

Q: Why do you need some anonymous statistical data?

A: This data helps us understand usage patterns, optimize website performance and user experience. All data is anonymous and not associated with your personal identity.

Q: How can I verify the security of the service?

A: You can open your browser's developer tools and check network requests. You'll find that except for loading page resources, there are no file upload requests.

Technical Support & Feedback

If you have questions about technical implementation or encounter technical issues, please contact us:

Technical Consultation

iam.jesse168@gmail.com

Architecture design, performance optimization, compatibility issues, etc.

Security Feedback

iam.jesse168@gmail.com

Security vulnerabilities, privacy risks and other sensitive issues

Developer Note: If you want to learn about specific technical implementations or contribute code, please review ourLegal Policiesfor relevant terms.