DeinPDF vs PDF.chat

DeinPDF is a browser-based assistant for asking questions about contracts, invoices, letters, and technical documents. Users can upload PDFs and images, including scanned pages, then ask questions across one or several documents in a temporary chat with page references. The service can summarize long documents and translate them into more than 16 languages. Suggested actions can help surface legal risks, deadlines, payment terms, action items, and obligations, or explain documents in simpler language. In instant mode, the file, index, and chat are erased after the conversation, with confirmation. The maker says documents are stored in Germany and AI processing takes place in the EU, with no transfer to third countries; it also says user documents and inputs are not used to train models. Security features listed include two-factor authentication, SSL/TLS encryption, and tenant isolation. DeinPDF works in a browser and can be added to an iPhone or Android home screen without an app store. There is no monthly base fee or forced subscription. Usage-based charges apply, with €0.50 starting credit and top-ups from €10. The terms warn that AI output may be incorrect or misleading and does not replace professional advice.

PDF.chat lets users upload documents, ask questions, and receive answers cited to exact pages in over 100 languages. It accepts PDFs, Word and PowerPoint files, text files, and images, including scanned or photographed documents that its OCR models read on its own infrastructure. Long documents are indexed so questions can retrieve relevant pages from reports, textbooks, and dockets. Users can compare Claude, GPT, Gemini, Llama, and DeepSeek answers side by side in one chat, then export results as plain text, Markdown, DOCX, searchable PDF, CSV, or JSON. The service runs in a browser without a download or installation. Its REST API ingests documents, returns per-page text and metadata, and supports chat with page citations; API use is metered per page. The Free plan costs nothing, with pages resetting at midnight UTC and no credit card required. Starter costs $5 a month and includes 750 pages per month. PDF.chat says files are automatically deleted shortly after processing and are not sold, shared, or used for training; on paid tiers, relevant passages may be sent to third-party AI providers.