▮ExtDB
API & MCP

Instant Book Reader

Replace New Tab with a focused EPUB, PDF & TXT reader. Highlights, vocabulary, 15+ themes, optional BYOK AI assistant.

As of June 2026, Instant Book Reader has 25 users and a 5.00/5 rating from 3 reviews in the Productivity category.

AatmikProductivity
Chrome Web Store ↗.crx
Usersno change0%
25
25
Ratingno change0%
5.00
3 reviews
Reviewsno change0%
3
Version
1.1.1
Manifest V3
90-day change · In the last 90 days this extension 3 version updates, changed permissions.

History

7 snapshots

Tracking since May 2, 2026.

26.76141.2399999999999984May 2, 2026Jun 7, 2026
View as table
DateUsersRatingReviewsVersion
May 2, 2026———1.0.0
May 8, 2026———1.0.0
May 13, 20263——1.0.1
May 19, 20266——1.0.1
May 25, 202665.0011.1.0
Jun 1, 2026145.0031.1.0
Jun 7, 2026215.0031.1.1
Now255.0031.1.1

Changelog

  • May 19, 2026
    description
    Open your books in every new tab.                                                                                                                                                                                                              
                                                         
Instant Book Reader replaces Chrome's default new-tab page with a clean, distraction-free reader for your own EPUB, PDF, and TXT files. Drop a book in once and every new tab takes you back to where you left off — no app to launch, no      
  website to load, no account required.                  
                                                                                                                                                                                                                                                 
  Why install:                                           

  • You read books across many short sessions and want a frictionless way to pick up where you left off.                                                                                                                                         
  • You want to highlight, look up, and translate words while you read — without leaving the page.
  • You want to actually learn the words you encounter, not just look them up and forget them.                                                                                                                                                   
  • You don't want your reading history or your books uploaded to anyone's server.                                                                                                                                                               
                                                                                                                                                                                                                                                 
  What you get:                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                 
  📖 Multi-format reader — EPUB, PDF, and TXT, all rendered cleanly with light, dark, and sepia themes, adjustable fonts, line spacing, and PDF view modes (single page, continuous, two-page spread).                                           
   
  ✍️  Highlights — select any text, pick from four colors, add notes. A sidebar lists every highlight across every book; click to jump back. Re-select a highlighted passage to remove it in one click.                                           
                                                         
  📚 One-click define — select any word and see its definition, phonetic, and pronunciation audio inline. Powered by Wiktionary; falls back to high-quality Google text-to-speech.                                                               
                                                         
  🌐 Inline translation — translate any selected text into 10 languages without copying it elsewhere.                                                                                                                                            
                                                         
  🔍 Web search — send a selection straight to Google in a new tab.                                                                                                                                                                              
                                                         
  🧠 Vocabulary builder — every word you define is automatically saved with the sentence you saw it in. Review your collection with spaced-repetition flashcards (Leitner box: 1d → 3d → 7d → 14d → 30d → mastered). Quiz yourself with          
  fill-in-the-blank using your own saved sentences. Export everything as CSV for Anki, Notion, or anywhere else.
                                                                                                                                                                                                                                                 
  🔒 Local-first by default — your books and progress live in your browser. No upload, no sign-in required, nothing leaves your device unless you opt in.                                                                                        
   
  Permissions explained:                                                                                                                                                                                                                         
                                                         
  • storage — saves your books, highlights, vocabulary, and reading positions on this device.                                                                                                                                                    
  • alarms — periodically saves your reading position so a crash doesn't lose your spot.
  • api.dictionaryapi.dev — fetches word definitions when you tap Define.                                                                                                                                                                        
  • translate.google.com — fetches pronunciation audio when no human recording is available.                                                                                                                                                     
                                                                                                                                                                                                                                                 
  No analytics. No telemetry. No ads.
    **Your reading space, always one tab away.**

  Instant Book Reader replaces Chrome's default new-tab page with a clean, distraction-free reader for your own EPUB, PDF, and TXT files. Drop a book in once and every
   new tab takes you back to where you left off — no app to launch, no website to load, no account required.

  **Why install:**

  • You read books across many short sessions and want a frictionless way to pick up where you left off.
  • You want to highlight, look up, and translate words while you read — without leaving the page.
  • You want AI-powered summaries, explanations, and key highlights at your fingertips — using your own API key.
  • You want to actually learn the words you encounter, not just look them up and forget them.
  • You don't want your reading history or your books uploaded to anyone's server.

  **What you get:**

  📖 Multi-format reader — EPUB, PDF, and TXT, all rendered cleanly with 15+ themes (light, dark, sepia, and more), adjustable fonts, line spacing, and PDF view modes
  (single page, continuous scroll, two-page spread).

  🎨 15+ reading themes — from warm cream to deep dark mode, with a custom theme builder so you can create your own.

  📑 Table of Contents — nested chapter navigation for EPUBs with one-click jump. Includes fallback parsing for books with non-standard TOC formats.

  🤖 AI Assistant (bring your own key) — open Settings → AI Keys, paste an API key from Anthropic, OpenAI, Google Gemini, or OpenRouter, and unlock chapter summaries,
  "explain this" on any selection, key-point extraction, and chat-style Q&A. Your key is stored locally and requests go directly from your browser to the provider you
  chose. No backend, no proxy. The reader works fully without AI if you'd rather not add a key.

  ✍️  Highlights — select any text, pick from five colors, add notes. A sidebar lists every highlight across every book; click to jump back. Re-select a highlighted
  passage to remove it in one click.

  📚 One-click define — select any word and see its definition, phonetic, and pronunciation audio inline. Powered by a free public dictionary API; falls back to Google
   text-to-speech for pronunciation when no human recording is available.

  🌐 Inline translation — translate any selected text into 10 languages without copying it elsewhere. Requires an AI key (same one you use for the assistant).

  🔍 Web search — send a selection straight to Google in a new tab.

  🧠 Vocabulary builder — every word you define is automatically saved with the sentence you saw it in. Review your collection with spaced-repetition flashcards
  (Leitner box: 1d → 3d → 7d → 14d → 30d → mastered). Quiz yourself with fill-in-the-blank using your own saved sentences. Export everything as CSV for Anki, Notion,
  or anywhere else.

  🖼️  PDF thumbnails — a bottom strip shows page previews so you can jump to any page visually.

  📐 Resizable panels — drag the edge of any sidebar to resize it. Library, TOC, AI, Highlights, and Words each get their own panel.

  🔒 Local-first, no sign-in — your books, highlights, vocabulary, and reading positions live in your browser (IndexedDB + chrome.storage.local). The extension has no
  accounts, no cloud sync, and no backend. Nothing about your reading is sent anywhere unless you trigger a feature that explicitly calls out to a third-party service
  (see Permissions below).

  **Permissions explained:**

  • storage — saves your books, highlights, vocabulary, reading positions, settings, and (if you choose to add one) your AI provider API key on this device.
  • api.dictionaryapi.dev — fetches word definitions when you use Define.
  • translate.google.com — fetches pronunciation audio when no other recording is available.
  • api.anthropic.com / api.openai.com / generativelanguage.googleapis.com / openrouter.ai — only contacted if you add an API key for that specific provider in
  Settings → AI Keys. No requests are made to any of these otherwise.

This version removes the Google Sign-In and cloud-sync features advertised by earlier 1.0.x builds. AI is now bring-your-own-key only.

No analytics. No telemetry. No ads.
  • May 19, 2026
    short_description
    Read your books on every new tab. Supports EPUB, PDF, and TXT with AI-powered features.
    Replace New Tab with a focused EPUB, PDF & TXT reader. Highlights, vocabulary, 15+ themes, optional BYOK AI assistant.
  • May 19, 2026
    host_permissions
    https://*.googleapis.com/*, https://api.dictionaryapi.dev/*, https://translate.google.com/*
    https://api.dictionaryapi.dev/*, https://translate.google.com/*, https://api.anthropic.com/*, https://api.openai.com/*, https://generativelanguage.googleapis.com/*, https://openrouter.ai/*
  • May 19, 2026
    permissions
    storage, identity, alarms
    storage
  • May 8, 2026
    short_description
    Read EPUB, PDF & TXT on every new tab. Highlight, define, translate, build vocabulary — all on-device.
    Read your books on every new tab. Supports EPUB, PDF, and TXT with AI-powered features.
  • May 8, 2026
    host_permissions
    https://api.dictionaryapi.dev/*, https://translate.google.com/*
    https://*.googleapis.com/*, https://api.dictionaryapi.dev/*, https://translate.google.com/*
  • May 8, 2026
    permissions
    storage, alarms
    storage, identity, alarms

Permissions & access

Permissions
storage
Host access
https://api.dictionaryapi.dev/*, https://translate.google.com/*, https://api.anthropic.com/*, https://api.openai.com/*, https://generativelanguage.googleapis.com/*, https://openrouter.ai/*

Screenshots

Instant Book Reader screenshot 1Instant Book Reader screenshot 2Instant Book Reader screenshot 3Instant Book Reader screenshot 4Instant Book Reader screenshot 5

About

**Your reading space, always one tab away.**

  Instant Book Reader replaces Chrome's default new-tab page with a clean, distraction-free reader for your own EPUB, PDF, and TXT files. Drop a book in once and every
   new tab takes you back to where you left off — no app to launch, no website to load, no account required.

  **Why install:**

  • You read books across many short sessions and want a frictionless way to pick up where you left off.
  • You want to highlight, look up, and translate words while you read — without leaving the page.
  • You want AI-powered summaries, explanations, and key highlights at your fingertips — using your own API key.
  • You want to actually learn the words you encounter, not just look them up and forget them.
  • You don't want your reading history or your books uploaded to anyone's server.

  **What you get:**

  📖 Multi-format reader — EPUB, PDF, and TXT, all rendered cleanly with 15+ themes (light, dark, sepia, and more), adjustable fonts, line spacing, and PDF view modes
  (single page, continuous scroll, two-page spread).

  🎨 15+ reading themes — from warm cream to deep dark mode, with a custom theme builder so you can create your own.

  📑 Table of Contents — nested chapter navigation for EPUBs with one-click jump. Includes fallback parsing for books with non-standard TOC formats.

  🤖 AI Assistant (bring your own key) — open Settings → AI Keys, paste an API key from Anthropic, OpenAI, Google Gemini, or OpenRouter, and unlock chapter summaries,
  "explain this" on any selection, key-point extraction, and chat-style Q&A. Your key is stored locally and requests go directly from your browser to the provider you
  chose. No backend, no proxy. The reader works fully without AI if you'd rather not add a key.

  ✍️  Highlights — select any text, pick from five colors, add notes. A sidebar lists every highlight across every book; click to jump back. Re-select a highlighted
  passage to remove it in one click.

  📚 One-click define — select any word and see its definition, phonetic, and pronunciation audio inline. Powered by a free public dictionary API; falls back to Google
   text-to-speech for pronunciation when no human recording is available.

  🌐 Inline translation — translate any selected text into 10 languages without copying it elsewhere. Requires an AI key (same one you use for the assistant).

  🔍 Web search — send a selection straight to Google in a new tab.

  🧠 Vocabulary builder — every word you define is automatically saved with the sentence you saw it in. Review your collection with spaced-repetition flashcards
  (Leitner box: 1d → 3d → 7d → 14d → 30d → mastered). Quiz yourself with fill-in-the-blank using your own saved sentences. Export everything as CSV for Anki, Notion,
  or anywhere else.

  🖼️  PDF thumbnails — a bottom strip shows page previews so you can jump to any page visually.

  📐 Resizable panels — drag the edge of any sidebar to resize it. Library, TOC, AI, Highlights, and Words each get their own panel.

  🔒 Local-first, no sign-in — your books, highlights, vocabulary, and reading positions live in your browser (IndexedDB + chrome.storage.local). The extension has no
  accounts, no cloud sync, and no backend. Nothing about your reading is sent anywhere unless you trigger a feature that explicitly calls out to a third-party service
  (see Permissions below).

  **Permissions explained:**

  • storage — saves your books, highlights, vocabulary, reading positions, settings, and (if you choose to add one) your AI provider API key on this device.
  • api.dictionaryapi.dev — fetches word definitions when you use Define.
  • translate.google.com — fetches pronunciation audio when no other recording is available.
  • api.anthropic.com / api.openai.com / generativelanguage.googleapis.com / openrouter.ai — only contacted if you add an API key for that specific provider in
  Settings → AI Keys. No requests are made to any of these otherwise.

This version removes the Google Sign-In and cloud-sync features advertised by earlier 1.0.x builds. AI is now bring-your-own-key only.

No analytics. No telemetry. No ads.

Technical

Version
1.1.1
Manifest
V3
Size
874KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
beconkamchfbjkplbapbkhmjdmpjfeni
Developer ID
u0d7935aceb8f55fe2694adb7a6f847c9
Developer Email
[email protected]
Created
May 1, 2026
Last Updated (Store)
May 28, 2026
Last Scraped
Jun 7, 2026
Website
—

Data sourced from the Chrome Web Store · last verified Jun 7, 2026.