klzth is a lightweight PDF workspace for combining documents quickly and keeping them under your control.
Select multiple PDFs, arrange their order, and create a single file in your browser. Files are processed locally, so sensitive documents such as contracts, invoices, applications, and personal records can stay on your device.
You can sort files by filename, reorganize them before merging, and optionally fit pages to A4 when working with different paper sizes. The tool preserves the existing PDF pages to help maintain text and image quality.
There is no account, installation, watermark, or recurring subscription. Get 3 free merges every month, then purchase additional usage only when needed — 30 merges for $5.50 or 100 merges for $9.90.
klzth — practical PDF tools, without unnecessary complexity.