DISCLAIMER · UPDATED 27 AUGUST 2026
Review code before you publish it
HTML Online Viewer is a development convenience, not a substitute for security review, accessibility testing or professional advice.
Tool output
Formatting, minification, parsing feedback and preview output are provided for convenience. They may not identify every error or preserve every edge case. Keep a backup and test your final file in the browsers and devices your audience uses.
Security
The preview is sandboxed, but HTML and JavaScript can still request third-party resources or display misleading content. Do not paste secrets, credentials or untrusted code into any online tool. Exported code should receive an appropriate security review before production use.
No professional advice
Information on this site is general educational information. It is not legal, security, accessibility, privacy or other professional advice.
Third-party services
External links and resources loaded by a user's code are controlled by their respective providers. We are not responsible for their availability, accuracy, security or policies.
Questions
For questions about this disclaimer, visit the contact page.