合并 PDF

This PDF merger combines several PDFs into a single document in the order you choose. Add your files, drag them into the right sequence with the arrows, and download one merged PDF.

Merging is one of those everyday tasks that comes up constantly: stitching scanned pages into one file, combining a cover letter with a CV, assembling chapters or reports, or bundling receipts for an expense claim.

Each page is carried over intact, with its text, fonts, vector graphics and images preserved exactly. The tool does not flatten pages to images or recompress them, so the merged file keeps the same quality and stays searchable and selectable.

It is built on pdf-lib and runs entirely in your browser. Once merged, you download the combined PDF directly, and closing the tab leaves no copy behind on any server.

There is no fixed size limit, but because the work happens in your browser tab, very large files use more of your device's memory. Most everyday documents merge in a moment.

Your files are never uploaded. For confidential material, contracts, invoices, statements, medical or legal documents, that is the difference between keeping data on your own machine and handing it to a third-party server. Nothing is stored or logged.