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chatgpt长对话卡顿是因为前端一次性加载了全部对话，导致每次新增对话时要渲染的聊天太多，因此可以通过设置属性为display=none来部分解决，通过卸载部分DOM来进一步缓解。
// ==UserScript==
// @name ChatGPT 长对话卡顿优化
// @namespace chatgpt-conversation-pruner
// @version 1.0
// @description chatgpt长对话卡顿是因为前端一次性加载了全部对话，导致每次新增对话时要渲染的聊天太多，因此可以通过设置属性为display=none来部分解决，通过卸载部分DOM来进一步缓解。
// @match https://chatgpt.com/*
// @grant none
// @license MIT
// ==/UserScript==
(function () {
'use strict';
/************* 🔧 状态参数（可动态修改） *************/
let KEEP_VISIBLE = 8;
let HIDE_BEYOND = 10;
let ENABLE_REMOVE = false;
const BOOT_CHECK_INTERVAL = 500;
// UI 状态持久化 key
const UI_STATE_KEY = 'cgpt_pruner_ui_minimized_v1';
/*****************************************************/
function getTurns() {
return Array.from(
document.querySelectorAll('article[data-testid^="conversation-turn"]')
);
}
function prune() {
const turns = getTurns();
const total = turns.length;
if (total <= HIDE_BEYOND) return;
const removeBefore = ENABLE_REMOVE ? total - HIDE_BEYOND : -1;
const hideBefore = total - KEEP_VISIBLE;
for (let i = 0; i < total; i++) {
const el = turns[i];
if (ENABLE_REMOVE && i < removeBefore) {
el.remove();
} else if (i < hideBefore) {
el.style.display = 'none';
}
}
}
function startObserver() {
const observer = new MutationObserver(prune);
observer.observe(document.body, { childList: true, subtree: true });
console.log('[ChatGPT Pruner] Observer started');
}
function waitForChat() {
const timer = setInterval(() => {
if (getTurns().length > 0) {
clearInterval(timer);
prune();
startObserver();
}
}, BOOT_CHECK_INTERVAL);
}
/************* 🪟 浮窗 UI（Shadow DOM + 最小化） *************/
function createPanel() {
const host = document.createElement('div');
host.style.position = 'fixed';
host.style.bottom = '20px';
host.style.right = '20px';
host.style.zIndex = '999999';
document.body.appendChild(host);
const shadow = host.attachShadow({ mode: 'open' });
shadow.innerHTML = `
<style>
* { box-sizing: border-box; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial; }
.panel, .mini {
background: #111;
color: #eee;
border-radius: 10px;
box-shadow: 0 6px 20px rgba(0,0,0,.4);
border: 1px solid rgba(255,255,255,.08);
}
.panel {
width: 240px;
padding: 10px;
font-size: 12px;
}
.header {
display: flex;
align-items: center;
justify-content: space-between;
margin-bottom: 8px;
}
.title { font-weight: 600; font-size: 12px; opacity: .95; }
.iconBtn {
width: 26px; height: 22px;
display: inline-flex;
align-items: center;
justify-content: center;
border-radius: 6px;
border: 1px solid rgba(255,255,255,.10);
background: rgba(255,255,255,.06);
color: #fff;
cursor: pointer;
user-select: none;
}
.iconBtn:hover { background: rgba(255,255,255,.12); }
.row { margin-bottom: 8px; }
label { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
input[type="number"] {
width: 70px;
background: #1b1b1b;
color: #fff;
border: 1px solid rgba(255,255,255,.12);
border-radius: 6px;
padding: 4px 6px;
outline: none;
}
input[type="checkbox"] { transform: scale(1.05); }
button.apply {
width: 100%;
margin-top: 6px;
padding: 6px;
border-radius: 8px;
border: 1px solid rgba(255,255,255,.12);
cursor: pointer;
background: rgba(255,255,255,.08);
color: #fff;
}
button.apply:hover { background: rgba(255,255,255,.14); }
.hint { opacity: 0.7; font-size: 11px; margin-top: 6px; line-height: 1.3; }
.mini {
width: 44px;
height: 44px;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
user-select: none;
}
.mini:hover { background: #171717; }
.miniDot {
width: 18px;
height: 18px;
border-radius: 6px;
background: rgba(255,255,255,.14);
border: 1px solid rgba(255,255,255,.14);
}
.hidden { display: none !important; }
</style>
<div class="panel" id="panel">
<div class="header">
<div class="title">Pruner</div>
<div class="iconBtn" id="minBtn" title="最小化">—</div>
</div>
<div class="row">
<label>
<span>真卸载 DOM</span>
<input type="checkbox" id="removeToggle">
</label>
</div>
<div class="row">
<label>
<span>保留最近</span>
<input type="number" id="keepVisible" min="1">
</label>
</div>
<div class="row">
<label>
<span>超过开始处理</span>
<input type="number" id="hideBeyond" min="1">
</label>
</div>
<button class="apply" id="applyBtn">立即应用</button>
<div class="hint">关闭卸载并刷新即可恢复全部历史。</div>
</div>
<div class="mini hidden" id="mini" title="展开设置">
<div class="miniDot"></div>
</div>
`;
const $ = (id) => shadow.getElementById(id);
function setMinimized(minimized) {
$('panel').classList.toggle('hidden', minimized);
$('mini').classList.toggle('hidden', !minimized);
try { localStorage.setItem(UI_STATE_KEY, minimized ? '1' : '0'); } catch (_) {}
}
// 初始化控件值
$('removeToggle').checked = ENABLE_REMOVE;
$('keepVisible').value = KEEP_VISIBLE;
$('hideBeyond').value = HIDE_BEYOND;
// 绑定按钮
$('applyBtn').onclick = () => {
ENABLE_REMOVE = $('removeToggle').checked;
KEEP_VISIBLE = parseInt($('keepVisible').value, 10);
HIDE_BEYOND = parseInt($('hideBeyond').value, 10);
prune();
};
// 最小化/展开
$('minBtn').onclick = () => setMinimized(true);
$('mini').onclick = () => setMinimized(false);
// 读取持久化状态
let initMin = false;
try { initMin = localStorage.getItem(UI_STATE_KEY) === '1'; } catch (_) {}
setMinimized(initMin);
}
waitForChat();
createPanel();
})();