合并 PDF
浏览器内拼接
将多个 PDF 合为一个、调整顺序并下载。文件留在本机。
此转换仅在您的浏览器中运行，不会上传任何内容。
拖放多个 PDF，或在下方选择
- 文件—
- 原始—
- 结果—
这个工具是什么？
A browser PDF merger. You add PDFs, reorder the file list, and download a single document whose pages are concatenated in that order. Processing stays on the device.
It does not edit text, add watermarks, or split pages. It does not crack encryption.
常见用途
- Combine signed scans and a cover letter into one attachment
- Join chapter exports from a printer driver
- Stack receipts before an expense upload that allows only one PDF
如何使用
- Drop two or more PDFs (or use Sample for two tiny demo files).
- Reorder with the up/down buttons; remove files you do not want.
- Download PDF. The browser builds the merged file locally.
示例
| Input | Notes |
|---|---|
a.pdf then b.pdf | All pages of A, then all pages of B. |
| Reorder B above A | Output starts with B’s pages. |
Encrypted secret.pdf | Merge fails until you unlock it with the known password. |
| 11th file | Rejected — max 10 PDFs per run. |
实践中的常见误区
- Forms and some annotations may flatten or drop depending on how they were saved; check the output.
- Bookmarks and some metadata from source files are not a guaranteed merge of every dictionary.
- Unique gotcha: merge copies pages, not “print as booklet” imposition. Duplex layout stays whatever each file already was.
参考资料
最后审阅: 2026-08-30
常见问题
- Are my PDFs uploaded?
- No. Pages are copied with a client-side PDF library in this tab. Close the tab to drop the bytes.
- Why did merge fail on a locked file?
- Password-protected PDFs cannot be copied until they are decrypted. Use Unlock PDF with the password you already know, then merge the unlocked copies.
- Page order?
- Files merge in list order (top to bottom). Use the arrows to reorder whole files, not individual pages.
- Limits?
- Up to 10 files, 25 MB each. Very large page counts can exhaust tab memory; split the job if the tab freezes.