Appnimi PDF Studio is a powerful, all-in-one PDF editor for Windows. It handles every document task — merge & split files, add watermarks & page numbers, annotate, sign, redact, encrypt, fill forms, create form fields, and extract text. Built on a clean native desktop UI with a polished dark/light interface. Core tools work fully offline with no account required. Upgrade to Professional to unlock all 28 features for just $5/mo.

I built Appnimi PDF Studio because I was tired of paying for bloated PDF software that required cloud accounts, subscriptions, or internet access just to merge two files. The goal was simple: a clean, native Windows desktop app that handles every PDF task you actually encounter — offline, no account needed, free to start. The app covers 28 features ranging from merge/split, annotations, sign, redact, encrypt, watermarks, page numbers, form creation, and more. It runs fully offline with a polished dark/light UI. The free tier covers essentials, and Professional unlocks everything for just $5/mo (or less on annual). Would love to hear what features you find most useful — and happy to answer any questions!