Hide posts and comments containing specified keywords on Reddit
As of
// ==UserScript==
// @name Reddit Content Filter
// @namespace https://greasyfork.org/en/users/567951-stuart-saddler
// @version 1.2
// @description Hide posts and comments containing specified keywords on Reddit
// @license MIT
// @match *://www.reddit.com/*
// @match *://old.reddit.com/*
// @run-at document-end
// @grant GM.getValue
// @grant GM.setValue
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_addStyle
// @grant GM_registerMenuCommand
// @grant GM_unregisterMenuCommand
// ==/UserScript==
(function() {
'use strict';
let filteredCount = 0;
let menuCommand = null;
let processedPosts = new WeakSet();
let keywordsArray = [];
// Cross-compatibility wrapper for GM functions
const GM = {
async getValue(name, defaultValue) {
return typeof GM_getValue !== 'undefined'
? GM_getValue(name, defaultValue)
: await GM.getValue(name, defaultValue);
},
async setValue(name, value) {
if (typeof GM_setValue !== 'undefined') {
GM_setValue(name, value);
} else {
await GM.setValue(name, value);
}
}
};
const CSS = `
.content-filtered {
display: none !important;
height: 0 !important;
overflow: hidden !important;
}
.reddit-filter-dialog {
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background: white;
padding: 20px;
border-radius: 8px;
z-index: 1000000;
box-shadow: 0 4px 12px rgba(0,0,0,0.15);
min-width: 300px;
max-width: 500px;
}
.reddit-filter-dialog textarea {
width: 100%;
min-height: 200px;
margin: 10px 0;
padding: 8px;
border: 1px solid #ccc;
border-radius: 4px;
font-family: monospace;
}
.reddit-filter-dialog button {
padding: 8px 16px;
margin: 0 5px;
border: none;
border-radius: 4px;
cursor: pointer;
}
.reddit-filter-dialog .save-btn {
background-color: #0079d3;
color: white;
}
.reddit-filter-dialog .cancel-btn {
background-color: #f2f2f2;
}
.reddit-filter-overlay {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: rgba(0,0,0,0.5);
z-index: 999999;
}
`;
// Add CSS
if (typeof GM_addStyle !== 'undefined') {
GM_addStyle(CSS);
} else {
const style = document.createElement('style');
style.textContent = CSS;
document.head.appendChild(style);
}
function getKeywords() {
return GM_getValue('filterKeywords', []);
}
async function showConfig() {
const overlay = document.createElement('div');
overlay.className = 'reddit-filter-overlay';
const dialog = document.createElement('div');
dialog.className = 'reddit-filter-dialog';
dialog.innerHTML = `
<h2 style="margin-top: 0;">Reddit Filter Keywords</h2>
<p>Enter keywords one per line:</p>
<textarea spellcheck="false">${keywordsArray.join('\n')}</textarea>
<div style="text-align: right;">
<button class="cancel-btn">Cancel</button>
<button class="save-btn">Save</button>
</div>
`;
document.body.appendChild(overlay);
document.body.appendChild(dialog);
const closeDialog = () => {
dialog.remove();
overlay.remove();
};
dialog.querySelector('.save-btn').addEventListener('click', async () => {
const newKeywords = dialog.querySelector('textarea').value
.split('\n')
.map(k => k.trim())
.filter(k => k.length > 0);
await GM.setValue('filterKeywords', newKeywords);
closeDialog();
location.reload();
});
dialog.querySelector('.cancel-btn').addEventListener('click', closeDialog);
overlay.addEventListener('click', closeDialog);
}
function updateCounter() {
if (menuCommand) {
GM_unregisterMenuCommand(menuCommand);
}
menuCommand = GM_registerMenuCommand(
`Configure Filter Keywords (${filteredCount} blocked)`,
showConfig
);
}
function processPost(post) {
if (!post || processedPosts.has(post)) return;
processedPosts.add(post);
const postContent = [
post.textContent,
...Array.from(post.querySelectorAll('h1, h2, h3, p, a[href], [role="heading"]'))
.map(el => el.textContent)
].join(' ').toLowerCase();
if (keywordsArray.some(keyword => postContent.includes(keyword.toLowerCase()))) {
post.classList.add('content-filtered');
const parentArticle = post.closest('article, div[data-testid="post-container"]');
if (parentArticle) {
parentArticle.classList.add('content-filtered');
}
filteredCount++;
updateCounter();
}
}
async function init() {
keywordsArray = await GM.getValue('filterKeywords', []);
// Initialize menu
updateCounter();
const observer = new MutationObserver((mutations) => {
for (const mutation of mutations) {
for (const node of mutation.addedNodes) {
if (node.nodeType === Node.ELEMENT_NODE) {
if (node.matches('article, div[data-testid="post-container"], shreddit-post')) {
processPost(node);
}
node.querySelectorAll('article, div[data-testid="post-container"], shreddit-post')
.forEach(processPost);
}
}
}
});
observer.observe(document.body, {
childList: true,
subtree: true
});
// Initial processing
document.querySelectorAll('article, div[data-testid="post-container"], shreddit-post')
.forEach(processPost);
}
// Ensure DOM is ready before initializing
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
})();