PDF Tool

在线合并 PDF

免费在线合并 PDF。按上传顺序将最多 20 个文件和 200 页合并为一个文档 — 无需账户或水印。

Free to use No account required Secure processing Discarded after download

Merge PDF files into one document

Use this merge PDF tool to combine contracts, scans, reports, receipts, or chapters into one downloadable document. Every page from the first uploaded file is followed by every page from the next file, continuing in upload-list order. Original page layouts, fonts, images, and dimensions are retained.

Merge PDF online free

Merge PDF online free with no signup, subscription, or watermark. Upload between 2 and 20 files, then download one combined PDF. Each source file can be up to 100 MB, with a 200-page total across the complete batch.

Merge PDF files in the right order

The upload list controls document order. The first selected PDF comes first, followed by the second, third, and so on. This uploader does not currently offer drag-to-reorder controls, so remove and select files again if the list is not in the order you need.

Merge PDF pages—what is included

The merger includes all pages from every uploaded file. It joins whole PDFs end to end; it does not extract, delete, rotate, or rearrange individual pages inside a document. If you only need selected PDF pages, prepare separate source files before uploading them here.

When to merge PDF files

  • Reports and appendices. Package chapters, exhibits, and supporting documents into one ordered report.
  • Signed documents. Combine a signed page with the original agreement before sending it back.
  • Receipts and records. Bundle many small statements or receipts into one archive-friendly PDF.
  • Scanned pages. Join separate scanner exports into a single document for email or upload.

If the merged result is too large, follow up with Compress PDF. To create a PDF from photos first, use Image to PDF.

How to merge PDF files online

  1. 至少上传两个 PDF 文件. 选择 2 至 20 个 PDF,每个最大 100 MB,总共 200 页。
  2. 检查文件顺序. 页面按所选文件的顺序追加。若需不同顺序,请移除后重新选择。
  3. 合并 PDF 文件. 点击合并 PDF。小任务立即运行,较大上传可能在后台继续。
  4. 下载合并后的 PDF. 处理完成后下载合并的单一文档。

Merge PDF limits at a glance

Limit Allowed Note
PDF files 2–20 per merge Merged in upload-list order
Pages Up to 200 total All pages from each file are included
File size Up to 100 MB each Larger batches may run in the queue
PDF security Unencrypted files Remove passwords before uploading

Privacy and processing

Processing runs on our servers only for your request. Files are discarded promptly after you download — we don't keep them as cloud storage.

Limitations: Password-protected PDFs may fail. Merging does not compress the result or edit individual pages. Very large combined outputs can take longer.

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Frequently Asked Questions

至少上传两个 PDF,确认按所需顺序选择,点击合并 PDF,然后下载合并文档。无需账户。
是的。免费合并 PDF,无需注册、订阅或水印。一次操作可合并最多 20 个文件和 200 页。
一次操作最多合并 20 个 PDF 文件。所有文件合计不得超过 200 页。
重要。合并后的 PDF 按上传列表中的文件顺序排列。顺序错误请移除后重新选择。
此工具按文件合并每个上传 PDF 的全部页面。无法在 PDF 内选择、删除或重排单个页面。
每个 PDF 最大 100 MB。更大的总上传可能在后台队列处理。
文件仅为您的合并请求上传到我们的服务器。下载后迅速删除。
不会。合并组合文档但不优化内容。若合并文件太大,请之后使用 PDF 压缩工具。

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