Merge PDFs
Combine PDFs in any order — locally, without uploading.
How to merge PDF files without uploading them
- Drop two or more PDFs above — they open locally in your browser.
- Drag the list items to set the order; remove any file with ✕.
- Click “Merge & download” to get a single combined PDF. Nothing ever leaves your device.
FAQ
Is this really free, with no limits?
Yes — no signup, no watermarks, no file count or daily limits. Because everything runs in your browser, serving you costs nothing.
Are my PDFs uploaded to a server?
No. This is a static site; merging happens in your browser’s memory. You can disconnect from the internet after the page loads and it still works.
Is there a file size limit?
Only your device’s memory. Files of a few hundred MB are fine on a typical laptop; very large files may be slow but are never rejected by a quota.
怎么合并 PDF（不上传文件）
- 把两个以上的 PDF 拖进上面的框——文件在你的浏览器里本地打开。
- 拖动列表调整顺序，点 ✕ 移除不要的文件。
- 点「合并并下载」得到一个合并后的 PDF。全程没有任何数据离开你的设备。
常见问题
真的免费、不限次吗？
是的——不注册、无水印、不限文件数和次数。因为一切都在你的浏览器里运行，服务你不产生成本。
PDF 会被上传到服务器吗？
不会。本站是静态页面，合并发生在你浏览器的内存里。页面加载后断网照样能用。
有文件大小限制吗？
只受你设备内存的限制。普通笔记本处理几百 MB 没问题；特别大的文件会慢一些，但不会被配额拒绝。