Merging PDFs is one of the most common document chores: stitching a cover letter to a resume, combining scanned pages into a single file, or bundling invoices for an accountant. Most free merge sites work by uploading your files to a server. For everyday documents that may be fine, but for cont...
Source: [Dev.to](https://dev.to/pulkitgovrani/how-to-merge-pdf-files-without-uploading-them-anywhere-2bje)