klzth makes it easy to turn a collection of PDF files into one organized document.

Choose the files you need, set their order, and merge them directly from your browser. You can sort documents by filename and optionally bring different page sizes into a consistent A4 format.

Your files are handled locally in the browser, so there is no need to upload them to an online processing service. The existing PDF pages are retained to help keep text readable, selectable, and images clear.

klzth requires no account and adds no watermark. Three merges are free each month, with one-time options of $5.50 for 30 merges or $9.90 for 100 merges.

Simple PDF merging, local processing, and no subscription to keep track of.