Categories: CSSScriptWeb Design

Prevent Content Theft on Your Website – SiteGuard.js

SiteGuard is a lightweight JavaScript library that helps you protect your web content through JavaScript security measures.

It blocks unauthorized access and prevents content copying through multiple protective layers:

Developer Tools Detection: Blocks access by monitoring performance metrics
Element Protection: Prevents content dragging
Middle-Click Prevention: Stops new tab exploitation
Right-Click Protection: Blocks context menu access
Keyboard Security: Disables development-related shortcuts
Text Selection Prevention: Restricts content copying

Table of Contents

Toggle

How to use it:

Copy the script and place it directly before the closing <head> tag in your HTML document. This placement prevents users from easily blocking the script and ensures that there are no traces left if content is cleared automatically.

<script>
/*!-----------------------------------------------------------------------------
* SiteGuard - Version 1.1.2
* License: Apache License Version 2.0
* Repository: https://github.com/luizbizzio/siteguard
* Published: 2024-11-08
* -------------------------------------------------------------------------- */function af(){var e=!1;setInterval(function(){var t=performance.now();console.profile(),console.profileEnd(),console.clear&&console.clear(),10<performance.now()-t&&!e&&(e=!0,document.documentElement.innerHTML="",location.reload())},1)}af(),document.addEventListener("dragstart",e=>e.preventDefault()),document.addEventListener("auxclick",e=>{1===e.button&&(e.stopPropagation(),e.preventDefault())}),document.addEventListener("contextmenu",function(e){e.preventDefault()}),document.onkeydown=e=>{[{ctrl:!0,shift:!0,code:"KeyI"},{ctrl:!0,shift:!0,code:"KeyJ"},{ctrl:!0,shift:!0,code:"KeyV"},{ctrl:!0,shift:!0,code:"KeyC"},{ctrl:!0,code:"KeyU"},{ctrl:!0,code:"KeyP"},{ctrl:!0,code:"KeyS"},{ctrl:!0,code:"KeyJ"},{ctrl:!0,code:"KeyF"},{code:"F12"}].some(t=>!!t.ctrl===e.ctrlKey&&!!t.shift===e.shiftKey&&e.code===t.code)&&e.preventDefault()},document.addEventListener("DOMContentLoaded",function(){document.body.style.setProperty("user-select","none","important");let e=document.createElement("style");e.type="text/css",e.media="print",e.innerHTML="* { display: none ; }",document.head.appendChild(e);let t=document.createElement("style");t.type="text/css",t.innerHTML="body {-webkit-touch-callout: none; -webkit-user-select: none; -khtml-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none;}",document.head.appendChild(t)});
</script>

Changelog:

v1.0.0 (03/22/2026)

Best-effort DevTools timing checks
Blocking of common browser interactions (right-click, selection, shortcuts)
Optional content hiding during print

The post Prevent Content Theft on Your Website – SiteGuard.js appeared first on CSS Script.

Prevent Copy/Cut/Paste/Right Click in Browsers – Copyguard

Copyguard-js is a lightweight JavaScript utility that blocks copying, pasting, cutting, and right-clicking to protect web content from unauthorized access. Features: Copy Protection: Blocks Ctrl+C and Cmd+C keyboard combinations across all browsers. Paste Prevention: Disables Ctrl+V and Cmd+V to prevent content insertion into protected areas. Cut Blocking: Prevents Ctrl+X and…

July 29, 2025

In "CSSScript"

Block Dev Tools, Right-Click & Text Selection with PageProtector.js Library

PageProtector.js is a lightweight JavaScript library that adds a layer of client-side protection to deter casual inspection of your web pages. This library targets casual users who might attempt to inspect or copy your frontend code through standard browser interfaces. It combines event blocking, shortcut interception, and runtime detection methods…

July 1, 2025

In "CSSScript"

rssfeeds-admin