klzth is a simple PDF merger made for people who want to get the job done without extra steps. Combine several PDF files, rearrange them, sort them by filename, and create one clean document directly from your browser. If your files use different page sizes, you can also fit them to A4 for a more consistent result. Your documents can stay on your device because the merging process runs locally in the browser. This helps keep private files away from unnecessary cloud uploads while preserving the original PDF content. No registration, no watermark, and no recurring subscription. Start with 3 free merges per month, then choose 30 merges for $5.50 or 100 merges for $9.90 when you need additional usage. klzth — one focused PDF tool, designed to keep things simple.