Displays cookies for the current page in an overlay
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// ==UserScript==
// @name Cookie Viewer
// @namespace http://tampermonkey.net/
// @version 1.1
// @description Displays cookies for the current page in an overlay
// @author
// @match *://*/*
// @grant none
// @license free
// ==/UserScript==
(function() {
'use strict';
// Create overlay element
const overlay = document.createElement('div');
overlay.id = 'cookieOverlay';
overlay.innerHTML = `
<div class="header">
<h3>Cookies for <span class="domain">${location.hostname}</span></h3>
<button class="close">×</button>
</div>
<div class="content"></div>
`;
// Create and append styles
const style = document.createElement('style');
style.textContent = `
#cookieOverlay {
position: fixed;
bottom: 10px;
right: 10px;
background: rgba(0, 0, 0, 0.9);
color: white;
padding: 15px;
border-radius: 8px;
max-width: 400px;
max-height: 50vh;
overflow-y: auto;
z-index: 9999;
font-family: Arial, sans-serif;
box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}
#cookieOverlay .header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 12px;
position: sticky;
top: 0;
background: inherit;
}
#cookieOverlay .close {
background: none;
border: none;
color: white;
font-size: 24px;
cursor: pointer;
padding: 0 8px;
margin-left: 10px;
}
#cookieOverlay .close:hover {
color: #ff4444;
}
#cookieOverlay .content {
font-size: 14px;
line-height: 1.4;
}
#cookieOverlay .cookie-item {
margin: 8px 0;
padding: 6px;
background: rgba(255,255,255,0.1);
border-radius: 4px;
word-break: break-word;
}
#cookieOverlay .domain {
color: #00ff9d;
font-weight: bold;
}
`;
document.body.appendChild(style);
document.body.appendChild(overlay);
// Update cookie display function
function updateCookieDisplay() {
const domainSpan = overlay.querySelector('.domain');
const contentDiv = overlay.querySelector('.content');
domainSpan.textContent = location.hostname;
contentDiv.innerHTML = '';
const cookies = document.cookie.split('; ').filter(Boolean);
if (cookies.length === 0) {
contentDiv.innerHTML = '<div class="cookie-item">No cookies found</div>';
return;
}
cookies.forEach(cookie => {
const [key, ...valueParts] = cookie.split('=');
const value = valueParts.join('=');
const cookieDiv = document.createElement('div');
cookieDiv.className = 'cookie-item';
cookieDiv.innerHTML = `
<strong>${key.trim()}</strong>: <span class="cookie-value">${decodeURIComponent(value)}</span>
`;
contentDiv.appendChild(cookieDiv);
});
}
// Event listeners for page changes
const updateEvents = ['load', 'DOMContentLoaded', 'popstate', 'pushState', 'replaceState'];
updateEvents.forEach(event => window.addEventListener(event, updateCookieDisplay));
// Monitor history changes for SPAs
const originalPushState = history.pushState;
const originalReplaceState = history.replaceState;
history.pushState = function(...args) {
originalPushState.apply(this, args);
window.dispatchEvent(new Event('pushState'));
};
history.replaceState = function(...args) {
originalReplaceState.apply(this, args);
window.dispatchEvent(new Event('replaceState'));
};
// Close button functionality
overlay.querySelector('.close').addEventListener('click', () => {
overlay.style.display = 'none';
localStorage.setItem('cookieOverlayHidden', 'true');
});
// Persist visibility state across page loads
if (localStorage.getItem('cookieOverlayHidden') === 'true') {
overlay.style.display = 'none';
} else {
overlay.style.display = 'block';
}
// Initial update
updateCookieDisplay();
})();