合并PDF
按你的顺序将多个PDF合并为一个。
将文件拖到此处
或
支持格式: PDF
免费 · 无需注册 · 大多数工具文件不离开您的设备
此工具完全在您的浏览器中运行——文件不会被上传。
使用方法
1
上传
2
设置
3
下载
常见问题
Is 合并PDF free?
Yes. 合并PDF is completely free with no sign-up, no watermark and no daily limit. There is no paid tier — every tool on iAdorePDF is free to use as often as you like.
Is 合并PDF safe and private?
Yes. 合并PDF runs entirely inside your browser, so your file is never uploaded to any server. Nothing leaves your device, which makes it safe for confidential documents.
Do I need to install any software?
No. 合并PDF works in any modern browser — Chrome, Safari, Firefox or Edge. There is nothing to download and no account to create.
Does 合并PDF work on a phone?
Yes. 合并PDF is built mobile-first and works on iPhone and Android exactly as it does on a computer, straight from the browser.
Can I choose the order of the merged PDFs?
Yes. After you add your files, drag the cards into any order or use the up and down arrows. The merged PDF follows exactly the order shown on screen, and you can also force every page to A4 or Letter.
How do I use 合并PDF?
Open the page, drop your file into the upload box (or tap Select file), choose your options, then press the start button. Your result downloads straight to your device.
Is there a file size limit?
There is no server limit because the work happens on your own device. The practical ceiling is your device memory; files up to about 100 MB are comfortable on most phones and much larger on a computer.