How to Merge PDFs Online (ComTools)
Practical workflow: unlock → compress → merge with order/ranges → download on ComTools.
1. Prepare files
Unlock password PDFs; compress oversized scans at /pdf-compress.
2. Open Merge PDF
Visit https://comtools.cn/pdf-merge.
3. Add & order
Drop PDFs/images/Word; drag thumbnails into final order.
4. Page ranges
On each card, keep only needed pages (e.g. 1-3,5).
5. Merge & check
Download; use PDF Reorder if the cover lands in the wrong place.