合并 PDF
将多个 PDF 文件合并为一个文档。合并前可重新排列顺序。
将多个 PDF 拖放到此处，或点击选择多个文件
PDF 最大支持 100 MB
请至少添加 2 个 PDF 文件以继续。
将多个 PDF 文件合并为一个文档。合并前可重新排列顺序。
将多个 PDF 拖放到此处，或点击选择多个文件
PDF 最大支持 100 MB
请至少添加 2 个 PDF 文件以继续。
To merge PDF files means to bring several separate documents together into a single continuous file, which makes sharing, archiving and printing far simpler. Instead of sending a handful of loose attachments, you deliver one ordered document that is easy to open and read. The ability to combine PDF files is valuable whenever a set of papers needs to be presented as one coherent whole.
Everyday use cases are plentiful. You might combine a contract with its appendices, gather several invoices from the same quarter, rebuild a book or scanned chapters that arrived page by page, or assemble a complete loan application to hand to a bank. In each case the goal is identical: give the recipient a clean document instead of forcing them to juggle multiple files.
A good outcome comes down to a few checks. Confirm the page order before you finish, and review each document's orientation, since mixing portrait and landscape sources can hurt readability. If the final file feels too heavy, run it through the compress tool to shrink it with no visible loss. And if something slips through, the reorder tool lets you rearrange pages, while split helps you pull out or remove a specific section.
Privacy stays at the heart of pdfOutils. Everything works with no sign-up, and your files are deleted automatically after processing: they are never stored or reused. That means you keep full control of your documents, from the first upload right through to downloading the merged PDF.
Upload
Upload your PDF file into the drop area (or drag and drop it).
Configure
将多个 PDF 文件合并为一个文档。合并前可重新排列顺序。
Download
Download the resulting document in one click — your files are deleted automatically after processing.
Drop your PDF files into the upload area, arrange them in the desired order, then click "Merge". Your combined PDF is ready to download in seconds.
You can merge as many PDF files as you need in a single operation, in any order you choose.
Yes. Once your PDFs are added, drag them to reorder them in the exact sequence they should appear in the final document before you start the merge.
Yes, you can combine files with different page sizes and orientations (A4, portrait, landscape). Each page keeps its own dimensions in the merged PDF.
Yes, this tool is 100% free with no usage limits. No sign-up, no credit card and no watermark added to your documents.
Yes. Your files are processed securely and automatically deleted from our servers after processing. Nobody has access to them.