Merge PDF online

klzth is a quiet, straightforward PDF tool for bringing separate documents into one file.

Whether you're combining a few pages for a form, putting reports together, or organizing documents for sharing, klzth lets you do it directly from your browser. Choose your files, set the order, and merge them without installing anything.

Your PDFs are processed locally in the browser, so they don't need to be uploaded to a third-party service. The original pages are kept intact, helping preserve selectable text and image quality. Mixed page sizes can also be adjusted to a consistent A4 format when needed.

No registration, no watermark, and no recurring subscription. 3 merges are free each month, with one-time options of 30 merges for $5.50 or 100 merges for $9.90.

Just a focused PDF merger that does one job and keeps it simple.