Security Considerations
Client-Side Processing
All document preview happens entirely in your browser. When you upload a file:
- The file is read using the browser's
FileReaderAPI - Content is passed directly to the vue-office renderer
- No file data is sent to any server
URL-Based Preview
When previewing via URL:
- Your browser fetches the document directly from the remote server
- The remote server can log your IP address and request metadata
- Only use URLs from sources you trust
Sensitive Documents
For confidential or sensitive documents:
- Prefer local file upload over public URLs
- Clear history after previewing sensitive files
- Close the browser tab when finished
Third-Party Library
This tool uses the open-source vue-office library. Review the library's source code and license if you have compliance requirements.
No Server Storage
- History is stored in browser local storage only
- Clearing browser data removes all history entries
- No account or cloud sync is involved
Recommendations
- Do not preview classified documents on shared computers
- Verify document sources before opening URLs
- Use HTTPS URLs when possible
- Clear history after working with sensitive files