What does merging PDFs mean?
Merging PDFs combines multiple separate PDF files into a single document, in the order you choose. The pages from each file are joined end-to-end — the result is one PDF you can share, upload, or print without sending a stack of individual files.
Common use cases include combining a contract with its attachments, joining a resume with a portfolio, assembling a multi-chapter report, or packaging scanned documents into a single archive. For example, a 10-page contract, a 3-page addendum, and a 2-page signature page become a single 15-page PDF — one file to share, one file to archive.
How to use the PDF merger
Upload your files. Drag your PDFs onto the upload area, or click to open a file picker. You can select multiple files at once. The tool accepts up to 20 PDFs per merge.
Set the order. Once uploaded, your files appear as a list. Drag and drop them to arrange the pages in exactly the order you want in the final document.
Download the merged PDF. Click Merge PDF. The tool combines your files on the server and returns a single PDF. Click Download to save it to your device.
How many files can I merge at once?
You can merge up to 20 PDF files in a single session. No daily limit, no account required — merge as many times as you need. If you have more than 20 files, merge them in two batches and then merge the two results into one.
Is it safe to merge PDFs online?
Yes. Your files are sent over an encrypted HTTPS connection, merged on the server, and immediately returned to your browser. Files are never stored or accessible to any third party after your session ends.