All Converter Pro
合并 PDF 文件
在线免费将 PDF 文件合并为一个文档。上传多个文件,设置顺序,下载无水印的合并后 PDF。
关于此 合并 PDF 工具
Merge PDF is built for combining invoices, scanned documents, receipts, contracts and reports into one organized PDF. Select files in the order you want them to appear, then download the merged file. The tool preserves each page exactly as it was in the original files, so no content is recompressed or altered during merging.
如何使用 合并 PDF
- 打开工具并添加您的文件、文字或数值。
- 检查可用选项,例如页面范围、输出格式、质量、密码或语言。
- 开始处理,并在完成前保持浏览器窗口打开。
- 下载结果,如有需要可继续使用相关工具。
实用提示
- 对于扫描的 PDF,支持 OCR 的工具会尽可能自动运行文字识别。
- 对于大文件,在通过邮件分享或上传到门户网站之前,请使用压缩工具。
- 为获得最佳效果,请上传扩展名正确的干净文件,避免使用损坏的文档。
Tips for a clean merge
File order in the merged PDF matches the order the files were added in the upload dialog, so double-check the order before starting if sequence matters, such as for a multi-part contract.
If you only need certain pages from one of the source files, run it through Split PDF first to extract those pages, then merge the extracted file with the rest.
常见问题
How do I control the PDF order?
The files are merged in the selected upload order. Select files in the sequence you want, or rename them with a numeric prefix (01-, 02-, and so on) before uploading so your file browser sorts them correctly.
Can I merge scanned PDFs?
Yes. Scanned and normal PDFs can be merged together in any combination.
Does merging reduce quality?
No. Merge PDF combines pages without recompressing the original PDF content, so image and text quality stay exactly the same.
How many PDF files can I merge at once?
You can merge up to 30 PDF files in a single job.
this PDF merger 免费吗?
Yes, merging PDF files with this tool is free, with no account required.
我上传的文件是私密的吗?
文件在处理期间以唯一的临时名称存储,旧的临时文件会自动清理。
我可以在手机上使用吗?
可以。上传和转换流程可在桌面、平板和手机浏览器上运行。