UPDF AI

UPDF AI is a chat assistant built into the UPDF PDF toolset that lets users ask questions about uploaded documents instead of reading them manually. It runs on GPT-5 and DeepSeek R1, switching between faster conversational answers and deeper analytical reasoning depending on the query. Beyond chat, it can summarize long PDFs, translate full documents while keeping the original layout, turn dense sections into mind maps, and pull text or objects out of embedded images. The tool also bundles general writing aids - grammar checking, paraphrasing, and spell-checking - plus research features aimed at finding and working through academic papers, which points its use beyond simple document review toward study and report-writing workflows. It targets students, researchers, legal and financial professionals, business teams, and government users who regularly work through PDF-heavy material. The free tier allows up to five PDFs (10MB each), 100 questions, and 100GB of cloud storage; paid plans raise the file-size limit to 2GB and remove the question cap. UPDF AI is available on Windows, macOS, iOS, Android, and the web, and the company, Superace Software, states that uploaded documents are not shared with third parties or used to train models. No public developer API is mentioned on the site.