ByteTools is built with privacy and security as core principles. All tools run 100% client-side in your browser with zero data collection, zero server-side processing, and zero data transmission.

We take security seriously and appreciate the security research community's efforts to help keep ByteTools and its users safe.

We currently support the latest deployed version of ByteTools.io with security updates.

If you discover a security vulnerability in ByteTools, please report it responsibly. We appreciate your efforts to disclose the issue in a coordinated manner.

Preferred Method: Create a Security Advisory

Alternative Methods:

• Email: Contact us via bytetools.io contact form
• Security.txt: See our security.txt for contact information

Please include the following in your report:

• Description of the vulnerability
• Steps to reproduce the issue
• Potential impact and severity assessment
• Any proof-of-concept code (if applicable)
• Your contact information for follow-up

• Acknowledgment: We will acknowledge receipt of your report within 48 hours
• Initial Assessment: We will provide an initial assessment within 7 days
• Updates: We will keep you informed of our progress
• Resolution: We aim to resolve critical issues within 30 days
• Credit: With your permission, we will credit you in our security acknowledgments

ByteTools processes all data entirely in your browser:

• No Server Processing: Your data never touches our servers
• No Data Collection: We don't log, store, or transmit your data
• No Network Requests: Tools work offline after initial page load
• No Third-Party APIs: All processing happens locally

• Code Security: We actively maintain secure code practices
• Dependency Updates: We regularly update dependencies to patch vulnerabilities
• HTTPS Enforcement: All traffic uses HTTPS with HSTS preload
• Content Security Policy: Strict CSP headers prevent XSS attacks

• Browser Security: Security depends on your browser's sandboxing and isolation
• Browser Extensions: Malicious extensions could intercept data
• Local Environment: Compromised devices may expose data
• Third-Party Libraries: We rely on open-source libraries (audited regularly)

Security issues related to:

• Cross-Site Scripting (XSS) vulnerabilities
• Code injection vulnerabilities
• Authentication or session management issues (if applicable)
• Dependency vulnerabilities with available exploits
• Security misconfigurations
• Information disclosure vulnerabilities
• Client-side security bypass techniques

The following are generally not considered security vulnerabilities:

• Vulnerabilities in outdated browsers (we support modern browsers only)
• Social engineering attacks
• Physical access to user devices
• Denial of Service (DoS) attacks against our static site
• Issues requiring browser extensions or modifications
• Theoretical vulnerabilities without proof of exploitability
• Vulnerabilities in third-party services we link to

• ✅ HTTPS Only: Enforced via HSTS with preload
• ✅ Content Security Policy: Strict CSP headers
• ✅ Client-Side Processing: Zero server-side data handling
• ✅ No Cookies: No session cookies or tracking cookies
• ✅ No Analytics PII: Analytics are anonymous only
• ✅ Regular Updates: Dependencies reviewed and updated regularly
• ✅ Static Site: No backend attack surface

• 🔒 No user accounts or authentication required
• 🔒 No data collection or logging
• 🔒 No third-party API calls from tools
• 🔒 Works completely offline after first load
• 🔒 Open source for transparency and auditing

We follow responsible disclosure principles:

1. Private Disclosure: Report vulnerabilities privately first
2. Coordination: We will work with you to understand and fix the issue
3. Public Disclosure: We will coordinate public disclosure timing with you
4. Credit: We will credit researchers (with permission) in our security advisories

Please do not:

• Publicly disclose the vulnerability before we've had a chance to fix it
• Exploit the vulnerability beyond what's necessary to demonstrate it
• Access, modify, or delete other users' data (though our architecture makes this nearly impossible)
• Perform attacks that could harm our service availability

We appreciate the security research community. Researchers who responsibly disclose vulnerabilities will be credited here (with permission):

No vulnerabilities reported yet.

• Security Advisories: Create Advisory
• Security.txt: View security.txt
• General Contact: ByteTools.io

• Privacy Policy: All tools are client-side with zero data collection
• Open Source: GitHub Repository
• MIT License: View License

Last Updated: November 27, 2025