Summio

Summio turns supported book metadata, public YouTube videos, compatible articles, and text-based PDFs into structured summaries at a depth the user chooses (short, medium, or detailed). Users can chat with the summary and available source context, with citations shown when available, and save eligible summaries to a signed-in library. Summio states it is built for readers and is not a replacement for the original source. The interface supports 27 languages and is available on Web and iOS. A Companion feature prepares recall questions and memory practice from summary ideas for materials the user has finished. PDF uploads are limited to 50 MB and 1,000 pages, and image-only scans need OCR before upload. The page lists a free allowance (one translation and 10 chat questions for first summary) and paid Premium and Max tiers, but exact prices are shown only at checkout.

Key features

• Structured AI summaries of eligible catalogue books with adjustable depth (short, medium, detailed)
• Structured summaries of public YouTube videos with usable transcript context, with timestamps
• Structured summaries of compatible public article links
• Structured summaries of text-based PDFs up to 50 MB and 1,000 pages
• Chat grounded in summary and available source context, with citations when available
• Saving eligible summaries to a signed-in library across supported devices
• Companion mode that prepares recall questions and memory practice from finished materials
• Interface available in 27 languages on Web and iOS

Best suited for

• Readers deciding which book, video, article, or PDF deserves a closer read
• Students and researchers reviewing long text-based PDFs or lectures
• Users who want to recall key ideas from materials they have already finished

Pricing

Free allowance is described (one AI summary with one translation and 10 chat questions to start); Premium and Max subscription tiers are listed, but exact prices, billing periods, and trial terms are shown only at checkout