AI Summarizer

An AI summarizer reads a long document and produces a concise, structured summary — overview, key points, and important details — so you can grasp the essence of a 50-page report in seconds instead of hours. VisualDocs uses PDF.js to extract the text from your PDF, then an edge function processes it through GPT-4o-mini (or a smart extractive ranking algorithm as fallback) to generate the summary, with automatic document-type detection that adapts the format to invoices, contracts, reports, and articles.

The summarizer is designed for the moment you receive a long document and need to decide quickly whether it is worth reading in full, or when you need the key points of many documents in a short time. Choose Short, Medium, or Long summary length, and Standard or Advanced mode — Advanced detects the document type and extracts key entities like dates, names, and monetary amounts alongside the prose summary, which is especially useful for invoices and contracts.

The free tier handles digital PDFs with selectable text (up to about 10,000 characters, or 5 to 7 pages); longer documents are truncated to the most content-rich section. For scanned PDFs, pair the summarizer with OCR first to make the text extractable. The output is a structured summary you can copy or download for sharing and archiving, turning a long read into a quick brief.

The summarizer pipeline begins with PDF.js extracting the raw text stream, then an edge function sends the text to GPT-4o-mini with a structured prompt that requests an overview, key points, and important details, returning a consistently formatted summary regardless of whether the source was an invoice, a contract, or a research article. Advanced mode adds a named-entity extraction pass that pulls dates, monetary amounts, and proper nouns into a structured list, which is why it excels on financial documents where the figures matter as much as the prose. The fallback extractive ranking algorithm runs entirely server-side when the AI endpoint is unavailable, scoring sentences by term frequency and position to produce a coherent summary without any external model call, so the tool still works during API outages.