Medium Upsell Blocker

Prevent Medium subscription/upsell modals by setting lo-non-moc-upsell-v2|displayed-at in localStorage

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name               Medium Upsell Blocker
// @name:zh-TW         Medium 推銷遮罩阻擋器
// @namespace          wellstsai.com
// @version            v20251112
// @license            MIT
// @description        Prevent Medium subscription/upsell modals by setting lo-non-moc-upsell-v2|displayed-at in localStorage
// @description:zh-TW  透過在 localStorage 中設定 lo-non-moc-upsell-v2|displayed-at,防止 Medium 顯示訂閱或推銷彈出視窗
// @author             WellsTsai
// @match              *://*.medium.com/*
// @match              *://*/*
// @run-at             document-start
// @grant              none
// ==/UserScript==

(() => {
    'use strict';
    const K = 'lo-non-moc-upsell-v2|displayed-at';
    const set = () => { try { localStorage.setItem(K, `"${new Date().toISOString()}"`); } catch (_) {} };
    const isMediumHost = /(^|\.)medium\.com$/.test(location.hostname);
    const isMediumLike = () => {
        const nodes = document.querySelectorAll('meta[name],meta[property],link[href]');
        for (const el of nodes) {
            const s = `${el.content||''}${el.getAttribute('name')||''}${el.getAttribute('property')||''}${el.href||''}`.toLowerCase();
            if (s.includes('medium') || s.includes('com.medium.reader') || s.includes('miro.medium.com') || s.includes('glyph.medium.com')) return true;
        }
        return false;
    };

    if (isMediumHost) {
        set();
        window.addEventListener('DOMContentLoaded', set, { once: true });
    } else {
        const run = () => { if (isMediumLike()) set(); };
        if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', run, { once: true });
        else run();
    }
})();