Drop multiple PDFs in any order, then combine them into a single file — without uploading anything. Reorder pages by dragging files into the sequence you want, then run.
There's no server-side merger here. The combining happens in your browser using pdf-lib — your documents never leave your device. That also means it's fast: no upload time, no download time. Just one quick local operation.
After merging, chain compress PDF to shrink the result, or watermark PDF to mark it as a draft. Or strip metadata before sharing externally.