How to merge PDFs privately

Combine documents carefully while keeping privacy and accuracy in mind.

Maintained by CASTARA · Last reviewed 22 September 2026

Practical steps

Select PDFs, review file names and page counts, arrange them in the intended order, and merge. Re-open the downloaded document to confirm page order. Digitally signed PDFs and interactive forms may change when rewritten.

Privacy and safety

Your selected files stay on your device. Keep backups, work only with files you are authorized to use, and verify every result.