CatPDF

Concatenate PDF files
into one document.

Drop your PDFs, arrange them in the exact order you need, and download a single combined file. CatPDF works locally in your browser.

Drag PDF files here or click to choose them Add as many PDFs as you need, including in multiple batches

Privacy: this PDF concatenation tool does not upload your files to any server. Your PDFs are processed locally on your computer and never leave your browser. You can save this page and use it offline.