// ==UserScript==
// @name Gemini Chat Markdown Exporter (Thoughts Included)
// @namespace https://github.com/NoahTheGinger/Userscripts/
// @version 0.4.2
// @description Export the current Gemini chat to Markdown via internal batchexecute RPC (with Thoughts content when present).
// @author NoahTheGinger
// @match https://gemini.google.com/*
// @grant none
// @run-at document-end
// @license MIT
// ==/UserScript==
(function () {
'use strict';
// ---------------------------
// Utilities
// ---------------------------
function $(sel, root = document) {
return root.querySelector(sel);
}
function getCurrentTimestamp() {
return new Date().toISOString().slice(0, 19).replace(/:/g, '-');
}
function sanitizeFilename(title) {
return (title || 'Gemini Chat').replace(/[<>:"/\\|?\*]/g, '_').replace(/\s+/g, '_');
}
function downloadFile(filename, mime, content) {
const blob = content instanceof Blob ? content : new Blob([content], { type: mime });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = filename;
document.body.appendChild(a);
a.click();
a.remove();
URL.revokeObjectURL(url);
}
function stdLB(text) {
return text.replace(/\r\n/g, '\n').replace(/\r/g, '\n');
}
// ---------------------------
// Page state helpers
// ---------------------------
/**
* Detect route and build the correct source-path and account-aware RPC base.
* Supports:
* - /app/:chatId
* - /gem/:gemId/:chatId
* - /u/:index/app/:chatId
* - /u/:index/gem/:gemId/:chatId
*
* Returns:
* {
* kind: 'app'|'gem',
* chatId: string,
* gemId?: string,
* userIndex?: string,
* basePrefix: '' | '/u/:index',
* sourcePath: string
* }
* or null when not on a conversation page.
*/
function getRouteFromUrl() {
const path = location.pathname.replace(/\/+$/, ''); // trim trailing slash(es)
const segs = path.split('/').filter(Boolean); // remove empty segments
if (segs.length === 0) return null;
let basePrefix = '';
let userIndex = null;
let i = 0;
// Optional "/u/:index" prefix
if (segs[0] === 'u' && /^\d+$/.test(segs[1] || '')) {
userIndex = segs[1];
basePrefix = `/u/${userIndex}`;
i = 2;
}
// /app/:chatId
if (segs[i] === 'app' && segs[i + 1]) {
const chatId = segs[i + 1];
return {
kind: 'app',
chatId,
userIndex,
basePrefix,
sourcePath: `${basePrefix}/app/${chatId}`
};
}
// /gem/:gemId/:chatId
if (segs[i] === 'gem' && segs[i + 1] && segs[i + 2]) {
const gemId = segs[i + 1];
const chatId = segs[i + 2];
return {
kind: 'gem',
gemId,
chatId,
userIndex,
basePrefix,
sourcePath: `${basePrefix}/gem/${gemId}/${chatId}`
};
}
return null;
}
function getLang() {
return document.documentElement.lang || 'en';
}
function getAtToken() {
const input = $('input[name="at"]');
if (input?.value) return input.value;
const html = document.documentElement.innerHTML;
let m = html.match(/"SNlM0e":"([^"]+)"/);
if (m) return m[1];
try {
if (window.WIZ_global_data?.SNlM0e) return window.WIZ_global_data.SNlM0e;
} catch {}
return null;
}
function getBatchUrl(route) {
const prefix = route.basePrefix || '';
return `${prefix}/_/BardChatUi/data/batchexecute`;
}
// ---------------------------
// Batchexecute calls
// ---------------------------
async function fetchConversationPayload(route) {
const at = getAtToken();
if (!at) throw new Error('Could not find anti-CSRF token "at" on the page.');
const chatId = route.chatId;
const convKey = chatId.startsWith('c_') ? chatId : `c_${chatId}`;
// Keep a large page size so long histories export in one go.
// Aligning shape with current RPC (5th arg [1]) but using 1000 for size.
const innerArgs = JSON.stringify([convKey, 1000, null, 1, [1], [4], null, 1]);
const fReq = [[["hNvQHb", innerArgs, null, "generic"]]];
const params = new URLSearchParams({
rpcids: 'hNvQHb',
'source-path': route.sourcePath,
hl: getLang(),
rt: 'c'
});
const body = new URLSearchParams({ 'f.req': JSON.stringify(fReq), at });
const res = await fetch(`${getBatchUrl(route)}?${params.toString()}`, {
method: 'POST',
headers: {
'content-type': 'application/x-www-form-urlencoded;charset=UTF-8',
'x-same-domain': '1',
'accept': '*/*'
},
body: body.toString() + '&'
});
if (!res.ok) {
const t = await res.text().catch(() => '');
throw new Error(`batchexecute failed: ${res.status} ${res.statusText}${t ? `\n${t.slice(0, 300)}` : ''}`);
}
return res.text();
}
async function fetchConversationTitle(route) {
const at = getAtToken();
if (!at) return null;
const fullChatId = route.chatId.startsWith('c_') ? route.chatId : `c_${route.chatId}`;
// Try the argument patterns we see in Gem pages first, then fallback.
const tryArgsList = [
JSON.stringify([13, null, [0, null, 1]]), // what Gem pages use
JSON.stringify([200, null, [0, null, 1]]), // larger page size, helps if the chat is older
null // legacy null-args (works for /app in many cases)
];
for (const innerArgs of tryArgsList) {
try {
const fReq = [[["MaZiqc", innerArgs, null, "generic"]]];
const params = new URLSearchParams({
rpcids: 'MaZiqc',
'source-path': route.sourcePath,
hl: getLang(),
rt: 'c'
});
const body = new URLSearchParams({ 'f.req': JSON.stringify(fReq), at });
const res = await fetch(`${getBatchUrl(route)}?${params.toString()}`, {
method: 'POST',
headers: {
'content-type': 'application/x-www-form-urlencoded;charset=UTF-8',
'x-same-domain': '1',
'accept': '*/*'
},
body: body.toString() + '&'
});
if (!res.ok) continue;
const text = await res.text();
const payloads = parseBatchExecute(text, 'MaZiqc');
for (const payload of payloads) {
const title = findTitleInPayload(payload, fullChatId);
if (title) return title;
}
} catch {
// Try next argument pattern
}
}
return null;
}
function findTitleInPayload(root, fullChatId) {
let found = null;
(function walk(node) {
if (found) return;
if (Array.isArray(node)) {
if (node.length >= 2 &&
typeof node[0] === 'string' &&
node[0] === fullChatId &&
typeof node[1] === 'string' &&
node[1].trim()) {
found = node[1].trim();
return;
}
for (const child of node) walk(child);
}
})(root);
return found;
}
// ---------------------------
// Google batchexecute parser
// ---------------------------
function parseBatchExecute(text, targetRpcId = 'hNvQHb') {
if (text.startsWith(")]}'\n")) {
const nl = text.indexOf('\n');
text = nl >= 0 ? text.slice(nl + 1) : '';
}
const lines = text.split('\n').filter(l => l.trim().length > 0);
const payloads = [];
for (let i = 0; i < lines.length; ) {
const lenStr = lines[i++];
const len = parseInt(lenStr, 10);
if (!isFinite(len)) break;
const jsonLine = lines[i++] || '';
let segment;
try {
segment = JSON.parse(jsonLine);
} catch {
continue;
}
if (Array.isArray(segment)) {
for (const entry of segment) {
if (Array.isArray(entry) && entry[0] === 'wrb.fr' && entry[1] === targetRpcId) {
const s = entry[2];
if (typeof s === 'string') {
try {
const inner = JSON.parse(s);
payloads.push(inner);
} catch {
// ignore
}
}
}
}
}
}
return payloads;
}
// ---------------------------
// Conversation extraction (block-based, with Thoughts)
// ---------------------------
function isUserMessageNode(node) {
return (
Array.isArray(node) &&
node.length >= 2 &&
Array.isArray(node[0]) &&
node[0].length >= 1 &&
node[0].every(p => typeof p === 'string') &&
(node[1] === 2 || node[1] === 1)
);
}
function getUserTextFromNode(userNode) {
try {
return userNode[0].join('\n');
} catch {
return '';
}
}
function isAssistantNode(node) {
return (
Array.isArray(node) &&
node.length >= 2 &&
typeof node[0] === 'string' &&
node[0].startsWith('rc_') &&
Array.isArray(node[1]) &&
typeof node[1][0] === 'string'
);
}
function isAssistantContainer(node) {
return (
Array.isArray(node) &&
node.length >= 1 &&
Array.isArray(node[0]) &&
node[0].length >= 1 &&
isAssistantNode(node[0][0])
);
}
function getAssistantNodeFromContainer(container) {
try {
return container[0][0];
} catch {
return null;
}
}
function getAssistantTextFromNode(assistantNode) {
try {
return assistantNode[1][0] || '';
} catch {
return '';
}
}
function extractReasoningFromAssistantNode(assistantNode) {
if (!Array.isArray(assistantNode)) return null;
for (let k = assistantNode.length - 1; k >= 0; k--) {
const child = assistantNode[k];
if (Array.isArray(child)) {
if (
child.length >= 2 &&
Array.isArray(child[1]) &&
child[1].length >= 1 &&
Array.isArray(child[1][0]) &&
child[1][0].length >= 1 &&
child[1][0].every(x => typeof x === 'string')
) {
const txt = child[1][0].join('\n\n').trim();
if (txt) return txt;
}
if (
Array.isArray(child[0]) &&
child[0].length >= 1 &&
child[0].every(x => typeof x === 'string')
) {
const txt = child[0].join('\n\n').trim();
if (txt) return txt;
}
}
}
return null;
}
function isTimestampPair(arr) {
return Array.isArray(arr) && arr.length === 2 && typeof arr[0] === 'number' && typeof arr[1] === 'number' && arr[0] > 1_600_000_000;
}
function cmpTimestampAsc(a, b) {
if (!a.tsPair && !b.tsPair) return 0;
if (!a.tsPair) return -1;
if (!b.tsPair) return 1;
if (a.tsPair[0] !== b.tsPair[0]) return a.tsPair[0] - b.tsPair[0];
return a.tsPair[1] - b.tsPair[1];
}
function detectBlock(node) {
if (!Array.isArray(node)) return null;
let userNode = null;
let assistantContainer = null;
let tsCandidate = null;
for (const child of node) {
if (isUserMessageNode(child) && !userNode) userNode = child;
if (isAssistantContainer(child) && !assistantContainer) assistantContainer = child;
if (isTimestampPair(child)) {
if (!tsCandidate || child[0] > tsCandidate[0] || (child[0] === tsCandidate[0] && child[1] > tsCandidate[1])) {
tsCandidate = child;
}
}
}
if (userNode && assistantContainer) {
const assistantNode = getAssistantNodeFromContainer(assistantContainer);
if (!assistantNode) return null;
const userText = getUserTextFromNode(userNode);
const assistantText = getAssistantTextFromNode(assistantNode);
const thoughtsText = extractReasoningFromAssistantNode(assistantNode);
return {
userText,
assistantText,
thoughtsText: thoughtsText || null,
tsPair: tsCandidate || null
};
}
return null;
}
function extractBlocksFromPayloadRoot(root) {
const blocks = [];
const seenComposite = new Set();
function scan(node) {
if (!Array.isArray(node)) return;
const block = detectBlock(node);
if (block) {
const key = JSON.stringify([
block.userText,
block.assistantText,
block.thoughtsText || '',
block.tsPair?.[0] || 0,
block.tsPair?.[1] || 0
]);
if (!seenComposite.has(key)) {
seenComposite.add(key);
blocks.push(block);
}
}
for (const child of node) scan(child);
}
scan(root);
return blocks;
}
function extractAllBlocks(payloads) {
let blocks = [];
for (const p of payloads) {
const b = extractBlocksFromPayloadRoot(p);
blocks = blocks.concat(b);
}
const withIndex = blocks.map((b, i) => ({ ...b, _i: i }));
withIndex.sort((a, b) => {
const c = cmpTimestampAsc(a, b);
return c !== 0 ? c : a._i - b._i;
});
return withIndex.map(({ _i, ...rest }) => rest);
}
// ---------------------------
// Markdown formatter
// With dividers between blocks
// ---------------------------
function blocksToMarkdown(blocks, title = 'Gemini Chat') {
const parts = [];
for (let i = 0; i < blocks.length; i++) {
const blk = blocks[i];
const u = (blk.userText || '').trim();
const a = (blk.assistantText || '').trim();
const t = (blk.thoughtsText || '').trim();
const blockParts = [];
if (u) blockParts.push(`#### User:\n${u}`);
if (t) blockParts.push(`#### Thoughts:\n${t}`);
if (a) blockParts.push(`#### Assistant:\n${a}`);
if (blockParts.length > 0) {
parts.push(blockParts.join('\n\n---\n\n'));
if (i < blocks.length - 1) {
parts.push('---');
}
}
}
return `# ${title}\n\n${parts.join('\n\n')}\n`;
}
// ---------------------------
// Button UI
// ---------------------------
function createExportButton() {
const btn = document.createElement('button');
btn.id = 'gemini-export-btn';
btn.textContent = 'Export';
btn.title = 'Export current Gemini chat to Markdown';
Object.assign(btn.style, {
position: 'fixed',
bottom: '20px',
right: '20px',
zIndex: 100000,
background: '#1a73e8',
color: '#fff',
border: 'none',
borderRadius: '6px',
padding: '10px 14px',
fontSize: '14px',
fontWeight: '600',
cursor: 'pointer',
boxShadow: '0 2px 8px rgba(0,0,0,0.15)'
});
btn.onmouseenter = () => { btn.style.background = '#1558c0'; };
btn.onmouseleave = () => { btn.style.background = '#1a73e8'; };
btn.onclick = doExport;
return btn;
}
function injectButton() {
if ($('#gemini-export-btn')) return;
document.body.appendChild(createExportButton());
}
// ---------------------------
// Main export flow
// ---------------------------
async function doExport() {
try {
const route = getRouteFromUrl();
if (!route || !route.chatId) {
alert('Open a chat at /app/:chatId or /gem/:gemId/:chatId before exporting.');
return;
}
// Fetch conversation data
const raw = await fetchConversationPayload(route);
const payloads = parseBatchExecute(raw);
if (!payloads.length) throw new Error('No conversation payloads found in batchexecute response.');
const blocks = extractAllBlocks(payloads);
if (!blocks.length) throw new Error('Could not extract any User/Assistant message pairs.');
// Try to fetch the actual conversation title
let title = await fetchConversationTitle(route);
if (!title) {
// Fallback to document title or default
title = document.title?.trim() || 'Gemini Chat';
if (title.includes(' - Gemini')) {
title = title.split(' - Gemini')[0].trim();
}
if (title === 'Gemini' || title === 'Google Gemini') {
title = 'Gemini Chat';
}
}
const md = stdLB(blocksToMarkdown(blocks, title));
const filename = `${sanitizeFilename(title)}_${getCurrentTimestamp()}.md`;
downloadFile(filename, 'text/markdown', md);
} catch (err) {
console.error('[Gemini Exporter] Error:', err);
alert(`Export failed: ${err?.message || err}`);
}
}
// ---------------------------
// Boot
// ---------------------------
function init() {
injectButton();
let lastHref = location.href;
setInterval(() => {
if (location.href !== lastHref) {
lastHref = location.href;
setTimeout(injectButton, 800);
}
}, 1000);
}
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
})();
