Terms of Use

Last updated: April 6, 2026

By using safe.html or the safehtml.com website, you acknowledge that you have read, understood, and agree to be bound by these terms. If you do not agree, do not use this software or website.

MIT License

Copyright © 2026 PING BUSINESS & TECHNOLOGY LIMITED

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

DISCLAIMER OF WARRANTIES

THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT.

The authors make no warranty that:

• The software will meet your requirements
• The software will be uninterrupted, timely, secure, or error-free
• The results obtained from the software will be accurate or reliable
• Any errors in the software will be corrected

LIMITATION OF LIABILITY

IN NO EVENT SHALL THE AUTHORS, CONTRIBUTORS, OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

This includes, without limitation, any direct, indirect, incidental, special, consequential, or exemplary damages, including but not limited to:

• Loss of data, passwords, or encrypted content
• Loss of profits, revenue, or business opportunities
• Unauthorized access to or alteration of your data
• Security breaches resulting from software vulnerabilities
• Damages resulting from file tampering by third parties
• Damages resulting from forgotten or lost master passwords
• Any other pecuniary loss

YOUR RESPONSIBILITIES

You are solely responsible for:

• Your master password — if lost, your data is permanently unrecoverable. No one can help you.
• File integrity — verifying that your safe-*.html files have not been tampered with before entering your master password. Open verify.html locally to check (included in your download).
• Backups — maintaining copies of your encrypted files. The authors are not responsible for data loss.
• Storage security — protecting your files from unauthorized access on your devices and cloud storage.
• Password strength — choosing a master password strong enough to resist brute-force attacks. A passphrase of 20+ characters is recommended.
• Browser environment — ensuring your browser and extensions do not compromise data. A dedicated profile with zero extensions is recommended.
• Secure deletion — removing old versions of saved files when no longer needed.

NO DATA RECOVERY

There is no master key, no backdoor, no password reset, and no recovery mechanism. The encryption is designed so that only the correct master password can decrypt the data. If you forget your master password, your data is permanently and irreversibly lost. The authors cannot and will not assist with data recovery.

CRYPTOGRAPHIC NOTICE

This software uses AES-256-GCM encryption with PBKDF2-SHA256 key derivation (600,000 iterations) via the Web Crypto API built into your browser. The authors make no representations regarding the export, import, or use of cryptographic software. You are solely responsible for compliance with all applicable laws and regulations in your jurisdiction.

SINGLE-FILE ARCHITECTURE

safe.html stores executable code and encrypted data in the same file. This means:

• If a file is tampered with, malicious code could be injected alongside your encrypted data
• The file cannot verify its own integrity — open verify.html locally to check file integrity before entering your master password
• Only open files you generated yourself, or files verified locally with verify.html
• Never enter your master password into a file obtained from an untrusted source

THIRD-PARTY ENVIRONMENTS

The authors have no control over and accept no responsibility for:

• Browser implementations of the Web Crypto API
• Browser extensions that may access page content
• Operating system or cloud storage vulnerabilities
• Network security of your internet connection
• Any third-party software or services used alongside safe.html

Severability

If any provision of these terms is held to be invalid or unenforceable, the remaining provisions shall continue in full force and effect.

Entire Agreement

These terms constitute the entire agreement between you and the authors regarding the use of safe.html and supersede all prior agreements and understandings.

Governing Law

This agreement shall be governed by and construed in accordance with the laws of the Hong Kong Special Administrative Region. Any disputes arising from this agreement shall be submitted to the exclusive jurisdiction of the courts of Hong Kong SAR.

Contact

Official website: https://safehtml.com

Security issues: security@safehtml.com