Choose your documents
Open Merge PDF and select your PDF files. You can add up to 20 files within the displayed size limit. Password-protected files need to be decrypted before use.
Put them in order
Use the up and down controls beside your files to arrange them. The output follows the file list from top to bottom and keeps the page order inside each document.
Merge and save
Choose Merge PDF, wait for the result, and download the combined file. Your documents are processed in your browser and are never uploaded.