The AI workspace for your EPUBs and ebooks

You've read hundreds of books. You remember fragments: a concept from a business book, an argument from an academic text, a passage that changed how you thought about something. But finding any of it means remembering which book, which chapter, and hoping you highlighted it in whatever app you were reading in at the time. Kindle highlights stay in Kindle. Apple Books notes stay in Apple Books. EPUBs downloaded from the web sit in a folder, unread or half-read, with no connection to anything else. The knowledge you gained from all that reading is scattered across apps that don't talk to each other and a memory that fades faster than you'd like. You did the reading. The system for retaining and retrieving what you learned doesn't exist.

Fabric reads every EPUB and ebook you save, makes the content searchable by meaning, and keeps your highlights and annotations findable alongside everything else in your workspace. The books you've read become a searchable part of your personal knowledge, not locked-away files in a reading app.

Search inside every book by meaning

Reading apps are designed for reading, not for retrieval. When you need to find a passage you read six months ago, you're scrolling through a book trying to recognise the page or hoping you bookmarked it. Across a library of fifty or a hundred books, the odds of finding a specific idea drop to near zero.

Fabric's AI search reads the full text of every EPUB and ebook in your library and searches by meaning. Ask "the argument about deliberate practice in skill acquisition" or "the section about cognitive load and learning" and find the relevant passage from the relevant book, even if you can't remember the title, the author, or when you read it.

The AI assistant works across your book library. Ask it to summarise a book, find the chapter where a specific concept was introduced, compare how two books address the same topic, or pull together every passage you've highlighted about a theme. It reads the full text and cites the sources.

Highlights and annotations that escape the reading app

The most valuable part of reading a book is the thinking you do while reading: the passages you highlight, the notes you scribble in the margin, the connections you draw to other things you know. In most reading setups, that thinking stays locked inside the app where you did the reading. Your Kindle highlights are in Kindle. Your Apple Books notes are in Apple Books. Neither is searchable alongside your other notes, research, or work.

Fabric's annotations let you highlight and comment directly on ebooks. Your highlights and marginal notes become part of your searchable workspace. A passage you highlighted last year is findable by searching the concept, not by remembering which book it was in.

If your existing highlights live in Kindle or another app, Fabric's Readwise integration brings them in. Your accumulated reading history, highlights, and book notes flow into the same searchable library as everything else. The years of reading you've already done become a retrievable asset.

Read in a clean, focused environment

Fabric's reader gives you a distraction-free reading experience for EPUBs and saved content. Read time estimates help you plan reading sessions. Progress syncs across devices, so you pick up where you left off whether you're on your laptop, phone, or tablet.

The reader lives in the same workspace as your notes, research, and other reading. When you finish a chapter and want to write a note about it, the note is one click away and connected to the book. When you search for an idea later, the book, your highlights, and your notes all surface together.

Connected to everything you know

A book doesn't exist in isolation. The concept you read about connects to an article you saved, a podcast you listened to, a note you wrote, a conversation you had. But in a reading app, the book is a silo. The connections only exist if you manually carry ideas from one place to another.

In Fabric, your ebooks live alongside your articles, notes, PDFs, voice memos, meeting transcripts, and every other type of material. When you search for a concept, results come from across everything: the book that introduced the idea, the article that challenged it, and the note where you worked out what you think about it. The explorer and similar search surface connections between books and other material that you wouldn't find by reading them separately.

This is the core of the second brain approach: everything you read, think, and learn in one searchable, connected system.

Who uses Fabric for ebooks

Ebooks are central to deep reading and learning. Students manage textbooks and course readings for studying and dissertations. Researchers and educators work with academic texts alongside papers and articles. Writers read widely and need their reading to feed their writing. Anyone building a personal reading and learning library or a second brain that compounds across years of reading.

For structured approaches to reading and retention, see the guides to book notes, the commonplace book, evergreen notes, and building a second brain.

Get started

Make every book you've read searchable by what's inside it, and stop losing the knowledge you gained from reading. Try Fabric free.

Comparing tools? See why readers choose Fabric as the best read-it-later app.

FAQs

Can Fabric search inside EPUBs and ebooks by meaning?

Yes. AI search reads the full text of every ebook and searches by meaning. Describe the concept, argument, or passage you're looking for and find it across your entire library.

Can I highlight and annotate ebooks in Fabric?

Yes. Annotations let you highlight and comment directly on ebooks. Your highlights and notes are searchable by what they say, so a passage you marked last year is findable by the concept, not the page number.

Can I import my Kindle highlights?

Yes. Fabric's Readwise integration brings in highlights from Kindle and other reading apps. Your existing reading history becomes part of your searchable library.

Can the AI summarise a book or find a specific passage?

Yes. The AI assistant can summarise a book, find the chapter where a concept is introduced, or locate a specific passage by description. It reads the full text and cites the source.

Can the AI compare how two books address the same topic?

Yes. Ask the assistant to compare treatments of a concept across books, and it synthesises from the full text of both with references.

Can I read ebooks in Fabric?

Yes. The reader provides a clean, distraction-free reading experience with read time estimates and progress syncing across devices.

Can I search across ebooks and other file types together?

Yes. Search works across ebooks, articles, PDFs, notes, voice memos, and every other file type. A concept from a book and a related article are findable in the same search.

Does Fabric support EPUB format?

Yes. Fabric reads and indexes EPUB files. The full text is searchable by meaning.

Can I connect book highlights to my own notes?

Yes. Your highlights, annotations, and notes all live in the same searchable workspace. Write a note about a book and it's connected to the highlights you made while reading. Search a concept and find the book, the highlight, and the note together.

Can I organise my book library?

Yes. Use spaces to group books by topic, project, or reading stage. Smart organization adds automatic tagging. Search works across everything regardless of how you've organised it.

Does the library get more useful the more I read?

Yes. Every book, highlight, and note you add deepens what the AI can draw on. A question asked across a hundred books produces a richer answer than the same question across ten. The investment in reading compounds into a searchable knowledge base. See second brain.

Are my books and highlights private?

Yes. Your content is encrypted and only visible to you unless you choose to share it. Fabric uses AES-256 encryption and is CASA Tier 2 compliant.