Greasy Fork 镜像站

ChatGPT Markdown Export

Export ChatGPT conversations to clean, readable Markdown with proper role labels and preserved code formatting.
Poser une question, écrire un avis, ou signaler le script.
Enveloppe les lignes
// ==UserScript==
// @name         ChatGPT Markdown Export
// @namespace    https://github.com/dankCodeNugs/greasyScripts
// @version      1.0.0
// @description  Export ChatGPT conversations to clean, readable Markdown with proper role labels and preserved code formatting.
// @author       Anonymous
// @match        https://chat.openai.com/*
// @match        https://chatgpt.com/*
// @license      Dual license anti-copyleft & BSD-2-Clause
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    const BUTTON_ID = 'export-md-button';

    const style = `
        #${BUTTON_ID} {
            position: fixed;
            top: 10px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 9999;
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.4);
            border-radius: 6px;
            backdrop-filter: blur(6px);
            cursor: pointer;
            transition: background 0.2s, color 0.2s;
        }
        #${BUTTON_ID}:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #000;
        }
    `;

    function injectStyle() {
        const tag = document.createElement('style');
        tag.textContent = style;
        document.head.appendChild(tag);
    }

    function sanitizeClone(el) {
        const clone = el.cloneNode(true);
        clone.querySelectorAll('button, .copy-button, .absolute, .overflow-hidden, svg').forEach(e => e.remove());
        return clone;
    }

    function extractMarkdownFromElement(el) {
        const blocks = [];
        const walker = document.createTreeWalker(el, NodeFilter.SHOW_ELEMENT, null, false);

        while (walker.nextNode()) {
            const node = walker.currentNode;

            if (node.tagName === 'PRE' && node.querySelector('code')) {
                const code = node.querySelector('code').textContent.trim();
                blocks.push("```");
                blocks.push(code);
                blocks.push("```");
                walker.currentNode = node;
            } else if (node.tagName === 'P') {
                const text = node.textContent.trim();
                if (text.length > 0) {
                    blocks.push(text);
                }
            }
        }

        if (blocks.length === 0) {
            blocks.push(el.innerText.trim());
        }

        return blocks.join('\n\n');
    }

    function getSpeakerFromRole(role) {
        if (role === 'user') return 'User';
        if (role === 'assistant') return 'ChatGPT';
        return 'Unknown';
    }

    function collectMessages() {
        const transcript = [];

        const messages = document.querySelectorAll('main div[data-message-author-role]');

        messages.forEach(msg => {
            const role = msg.getAttribute('data-message-author-role');
            const speaker = getSpeakerFromRole(role);

            let content = '';
            const markdownEl = msg.querySelector('.markdown, .prose');
            const plainEl = msg.querySelector('.whitespace-pre-wrap');

            if (markdownEl) {
                const clean = sanitizeClone(markdownEl);
                content = extractMarkdownFromElement(clean);
            } else if (plainEl) {
                content = plainEl.textContent.trim();
            }

            if (content && content.length > 0) {
                transcript.push(`### ${speaker}:\n\n${content}`);
            }
        });

        return transcript.join('\n\n---\n\n');
    }

    function downloadMarkdown(content) {
        const blob = new Blob([content], { type: 'text/markdown' });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
        a.href = url;
        a.download = `chatgpt-session-${timestamp}.md`;
        document.body.appendChild(a);
        a.click();
        document.body.removeChild(a);
        URL.revokeObjectURL(url);
    }

    function addExportButton() {
        const btn = document.createElement('button');
        btn.id = BUTTON_ID;
        btn.textContent = 'Export to MD';
        btn.addEventListener('click', () => {
            const md = collectMessages();
            if (md.length === 0) {
                alert('No messages found.');
                return;
            }
            downloadMarkdown(md);
        });
        document.body.appendChild(btn);
    }

    const waitForMain = setInterval(() => {
        const main = document.querySelector('main');
        if (main && !document.getElementById(BUTTON_ID)) {
            clearInterval(waitForMain);
            injectStyle();
            addExportButton();
        }
    }, 500);
})();
扫码关注【爱吃馍】
