HTML CSS JS 压缩器

压缩器会移除源码中所有不影响运行的部分：注释、多余空白、空行和冗余标点。更小的文件意味着更快的页面加载、更低的带宽成本、更好的 Core Web Vitals——这正是所有正经生产站点在发布前都要压缩 HTML、CSS 和 JavaScript 的原因。安全地做这件事比看上去难：JavaScript 字符串字面量里的空白是有意义的，正则里包含像注释的 "/" 和 "//"，HTML 中

 里的空白必须保留。本工具会先对每种语言做分词，只移除经过证明是安全的那些内容。
它能做什么
在一个带标签的工具里压缩 HTML、CSS 或 JavaScript
删除注释而不触碰藏在字符串里的内容
折叠空白，同时保留字符串、正则和模板内容
HTML 中 
/ 的内容保持不变</li><li>显示压缩前后字节数和节省百分比</li><li>复制或下载压缩结果</li></ul><h3>什么时候用它</h3><ul><li>发布前把 JS 片段、CSS 块或内联 HTML 压缩变小</li><li>用更小的载荷通过性能预算门槛</li><li>为拒绝换行的字段准备单行输出</li><li>快速减小内嵌资源的体积</li></ul><p>隐私：压缩完全在你的浏览器里进行，粘贴的内容绝不会被上传。</p></div>
</section>
<section class="mt-14 max-w-3xl mx-auto card p-6 sm:p-8">
  <h2 class="text-xl font-semibold mb-4">安全压缩与危险花活</h2>
  <div class="prose prose-slate dark:prose-invert max-w-none text-sm sm:text-base"><ul><li>注释、缩进、换行先行——通常砍掉原始体积的三分之一，零风险。</li><li>局部变量改名只在作用域证明安全的地方进行；全局名与属性名一律不碰，外部 API 不会因此失灵。</li><li>即使已经 gzip，压缩后的源码仍显著更小——两层去掉的是不同种类的冗余。</li></ul></div>
</section>
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  <h2 class="text-2xl font-bold text-center">字节到底省在了哪里</h2>
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      <h3 class="font-semibold mt-1">三种语言一个工具</h3>
      <p class="text-sm text-slate-600 dark:text-slate-300 leading-relaxed">HTML、CSS、JS 压缩共用一个带标签的页面，每种语言都有对症的分词器——不用在各个单用途网站之间来回跳。</p>
    </div>
<div class="feature-card">
      <div class="grid place-items-center h-11 w-11 rounded-xl bg-gradient-to-br from-indigo-500/10 to-fuchsia-500/10 text-2xl">🔒</div>
      <h3 class="font-semibold mt-1">字符串和正则安然无恙</h3>
      <p class="text-sm text-slate-600 dark:text-slate-300 leading-relaxed">分词器能识别带引号的字符串、模板字面量和正则字面量，压缩永远不会弄坏 "a/ b/c" 或其中看起来像注释的文本。</p>
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  <h2 class="text-xl font-semibold mb-4">常见问题</h2>
  <div class="space-y-3"><details class="faq-item">
      <summary class="font-medium cursor-pointer list-none flex justify-between items-center gap-3">对 JavaScript 安全吗？<span class="text-slate-400 group-open:rotate-180 transition shrink-0">⌄</span></summary>
      <p class="mt-3 text-slate-600 dark:text-slate-300 leading-relaxed">安全。JS 压缩器先对输入分词，把注释与正则字面量、字符串区分开，所以 "/…/" 模式和字符串里的 "//" 文本会逐字节保留，只有真正的注释和装饰性空白会被移除。</p>
    </details>
<details class="faq-item">
      <summary class="font-medium cursor-pointer list-none flex justify-between items-center gap-3">HTML 空白怎么办？<span class="text-slate-400 group-open:rotate-180 transition shrink-0">⌄</span></summary>
      <p class="mt-3 text-slate-600 dark:text-slate-300 leading-relaxed">标签之间的空白被折叠，但 <pre> 和 <textarea> 内的内容原样保留（那里可能有意义），字符串属性也保持原样。输出仍然是渲染效果一致的合法 HTML。</p>
    </details>
<details class="faq-item">
      <summary class="font-medium cursor-pointer list-none flex justify-between items-center gap-3">它能取代构建流水线吗？<span class="text-slate-400 group-open:rotate-180 transition shrink-0">⌄</span></summary>
      <p class="mt-3 text-slate-600 dark:text-slate-300 leading-relaxed">一次性任务可以。整个项目仍需在 CI 里用 esbuild/terser/CSSNano；但本工具非常适合把代码片段、邮件模板或单个资源复制成最小形态。</p>
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        var a = document.getElementById('nav-auth');
        a.href = a.dataset.accountHref;
        a.textContent = a.dataset.accountLabel;
      }
    })();
  </script>
  <script>
    // Header membership CTA: anonymous/free users see "⚡ Upgrade" -> /pricing
    // (the prominent entry point, not just the footer link). Signed-in Pro/Max
    // members see a calm plan badge -> /account instead of a repeated upsell.
    (function () {
      if (!/(?:^|;\s*)li=1/.test(document.cookie)) return;
      var a = document.getElementById('nav-upgrade');
      if (!a) return;
      fetch('/api/credits').then(function (r) { return r.json(); }).then(function (b) {
        if (!b || !b.ok || (b.data.plan !== 'pro' && b.data.plan !== 'max')) return;
        a.href = a.dataset.accountHref;
        a.classList.add('member');
        var label = document.getElementById('nav-upgrade-label');
        if (label) label.textContent = b.data.plan.toUpperCase();
        a.setAttribute('aria-label', b.data.plan.toUpperCase());
      }).catch(function () {});
    })();
  </script>
  <script>
    // Record visit for the home page "recently used" row (local only).
    try {
      var _id = "minifier";
      var _r = JSON.parse(localStorage.getItem('recent_tools') || '[]').filter(function (x) { return x !== _id; });
      _r.unshift(_id);
      localStorage.setItem('recent_tools', JSON.stringify(_r.slice(0, 8)));
    } catch (e) {}
  </script>
  <script>
    // Announcement bar — fetches latest banner, renders inline. Ephemeral content,
    // not SEO-critical; the /announcements page IS full SSR for indexing.
    (function(){
      var bar=document.getElementById('announcement-bar');
      var link=document.getElementById('announcement-bar-link');
      var closeBtn=document.getElementById('announcement-bar-close');
      if(!bar||!link)return;
      var locale="zh";
      fetch('/api/announcements/latest?lang='+encodeURIComponent(locale))
        .then(function(r){return r.json()})
        .then(function(b){
          if(!b.ok||!b.data||!b.data.banner)return;
          var ann=b.data.banner;
          try{if(sessionStorage.getItem('ab_'+ann.id)==='1')return}catch(e){}
          link.textContent=ann.title;
          if(ann.slug)link.href='/'+locale+'/announcements/'+ann.slug;
          bar.classList.remove('hidden')
        }).catch(function(){});
      closeBtn.addEventListener('click',function(){
        bar.classList.add('hidden');
        try{sessionStorage.setItem('ab_'+link.href.split('/').pop(),'1')}catch(e){}
      })
    })();
    // First-visit popup — lazy-shown 4s after load, localStorage-dismissed forever.
    (function(){
      if(false)return; // game pages: no popup over gameplay
      var locale="zh";
      fetch('/api/announcements/latest?lang='+encodeURIComponent(locale))
        .then(function(r){return r.json()})
        .then(function(b){
          if(!b.ok||!b.data||!b.data.popups||!b.data.popups.length)return;
          var popup=b.data.popups[0];
          try{if(localStorage.getItem('ap_'+popup.id)==='1')return}catch(e){}
          setTimeout(function(){showPopup(popup)},4000)
        }).catch(function(){});
      function showPopup(p){
        var o=document.createElement('div');
        o.className='fixed inset-0 bg-black/50 z-[9998] flex items-center justify-center p-4';
        o.style.animation='fadeIn .25s ease';
        var slug = p.slug||'';
        var detailUrl = slug ? '/'+locale+'/announcements/'+slug : '';
        o.innerHTML='<div class="bg-white dark:bg-slate-900 rounded-2xl shadow-2xl max-w-md w-full p-6 sm:p-8 relative" style="animation:scaleIn .25s ease">'+
          '<button id="apx" class="absolute top-3 right-3 text-slate-400 hover:text-slate-600 dark:hover:text-slate-200 text-xl leading-none">×</button>'+
          '<div class="text-3xl mb-3">📢</div>'+
          '<h2 class="text-lg font-bold mb-2"></h2>'+
          '<p class="text-sm text-slate-600 dark:text-slate-300 mb-5 leading-relaxed"></p>'+
          '<div class="flex gap-2">'+
          '<button id="apd" class="btn-primary text-sm flex-1">Got it</button>'+
          (detailUrl ? '<a href="'+detailUrl+'" class="btn-ghost text-sm flex-1 text-center">Read more →</a>' : '')+
          '</div></div>';
        document.body.appendChild(o);
        o.querySelector('h2').textContent=p.title;
        o.querySelector('p').textContent=p.content.length>200?p.content.slice(0,200)+'…':p.content;
        function close(){o.remove();try{localStorage.setItem('ap_'+p.id,'1')}catch(e){}}
        o.querySelector('#apx').addEventListener('click',close);
        o.querySelector('#apd').addEventListener('click',close);
        o.addEventListener('click',function(e){if(e.target===o)close()})
      }
    })();
  </script>
</body>
</html>