> For the complete documentation index, see [llms.txt](https://til.yulrizka.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://til.yulrizka.com/linux/merge-multiple-pdf-into-a-single-file.md).

# merge multiple pdf into a single file

```
pdfunite in-1.pdf in-2.pdf in-n.pdf out.pdf
```

pdfunit is part of <https://poppler.freedesktop.org/>