A PDF merger joins separate documents into one file. Three PDFs of 3, 5, and 2 pages become one PDF of 10 pages. The pages stay in the order you selected. IntoConvert does not reorder them by name.
Use this when you need to combine PDF files for a packet, a scan set, or a form that arrived in pieces. A locked PDF is not opened. The merged file is not stored. It is sent as the download and the temporary copy is deleted.
Compress PDF is the next step only if the joined file is larger than you need. All tools