klzth

klzth（merge PDF locally） is a simple, secure, and browser-based PDF merger that lets you combine multiple PDF files quickly and easily. Your documents are processed directly in your browser, so there is no need to upload files to a remote server or create an account. Arrange files in your preferred order, merge PDFs while preserving selectable text and original image quality, and optionally resize pages to a uniform A4 format. With no watermark, no subscription, and affordable one-time licenses, klzth makes merging PDFs private, convenient, and hassle-free.