CSDN 去水印打印神器 | 一键展开代码 + 清除水印 + 自动打印，完美保存技术文章！
使用方法：
打开要保存的技术文章页面
在浏览器控制台(F12)中粘贴此代码执行
浏览器打印对话框会自动弹出
页面会在打印后自动恢复
(function() { 'use strict'; const originalHTML = document.body.innerHTML; const originalStyle = document.body.style.cssText; try { // 1. 先展开所有折叠的代码块 document.querySelectorAll('.expand-btn, .fold-btn, .code-expand, .toggle-btn').forEach(btn => { btn.click(); }); // 兼容CSDN的代码块展开 document.querySelectorAll('.hljs-button').forEach(btn => { if (btn.textContent.includes('展开')) btn.click(); }); // 2. 去水印（修复版） let removedCount = 0; document.querySelectorAll('*').forEach(el => { const className = el.className || ''; const id = el.id || ''; if ( (typeof className === 'string' && className.includes('watermark')) || (typeof id === 'string' && id.includes('watermark')) || el.style.pointerEvents === 'none' || (el.style.position === 'fixed' && parseInt(el.style.zIndex || 0) > 999) ) { el.remove(); removedCount++; } const computedStyle = getComputedStyle(el); if (computedStyle && typeof computedStyle.backgroundImage === 'string' && computedStyle.backgroundImage.includes('watermark')) { el.style.backgroundImage = 'none'; removedCount++; } }); // 3. 优化打印样式，让代码块完整显示 const printStyle = document.createElement('style'); printStyle.textContent = ` @media print { body { zoom: 0.8; } pre, code { white-space: pre-wrap !important; word-wrap: break-word !important; } .article_content { width: 100% !important; } header, footer, .sidebar, .comment, .advertisement { display: none !important; } } `; document.head.appendChild(printStyle); // 4. 弹出打印窗口 window.print(); // 5. 清理临时样式 document.head.removeChild(printStyle); } finally { // 恢复页面 document.body.innerHTML = originalHTML; document.body.style.cssText = originalStyle; } })();