HTML Beautifier, Sanitizer, Live Viewer & Search
Format unreadable markup, sanitize malicious or noisy DOM nodes, strip inline styles & tracking attributes, search keywords in real-time, and render live sandboxed previews — 100% in your browser.
HTML Beautifier, DOM Sanitizer & Security Recon
100% Client-SideFingerprint frameworks • Extract hidden APIs & tokens • Audit DOM attack surface • Beautify & live preview
AIzaSyD-98472918472_SECURE_TOKEN_SAMPLEAIzaSyD-98472918472_SECURE_TOKEN_SAMPLEstaging-api.securestack.internaldb-cluster-node-01.us-east.aws.internalhttps://staging-api.securestack.internalapihttps://api.securestack.io/v2/auth/loginapi/api/v1/auth/session-tokenapihttps://support.example.com/docs/firewall-rulesexternaljavascript:void(0)javascript/api/internal/debugapi<!-- Head metadata & internal dev notes --><!-- TODO: remove staging endpoint https://staging-api.securestack.internal before production release --><!-- Login form for credential validation --><!-- Empty tag demo -->Inline executable code (onsubmit) violates Strict Content Security Policy (CSP).
<form onsubmit="console.log(">Inline executable code (onclick) violates Strict Content Security Policy (CSP).
<button onclick="alert(">Inline executable code (onclick) violates Strict Content Security Policy (CSP).
<a onclick="location.href=">External link missing rel='noopener noreferrer' allowing window.opener access.
<a href="https://support.example.com/docs/firewall-rules" target="_blank">Execution of script via href allows DOM-based script injection.
<a href="javascript:void(0)" onclick="location.href='/api/internal/debug'">Smart Indentation & Beautify
Instantly indents nested DOM hierarchies, properly handles void tags, strips redundant whitespace, and formats tags cleanly.
DOM Sanitization & Cleaning
Remove <script> tags, strip inline styles, purge tracking data-* attributes, empty container tags, and remove HTML comments.
Live Sandboxed Preview & Search
Switch between syntax-highlighted searchable code and an isolated iframe preview with instant keyword match counts.