A quiet, private sanctuary for your PDF books.
Designed for deep, uninterrupted reading. Works entirely offline, protects your reading privacy, tracks reading speed without distraction, and ensures complete data sovereignty.
Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it.
“And what is the use of a book,” thought Alice, “without pictures or conversations?” So she was considering in her own mind whether the pleasure of making a daisy-chain would be worth the trouble of getting up and picking the daisies.
Crafted for readers who value focus and control.
Most web PDF viewers are built for signing invoices or printing forms. Web Book Reader is reimagined from scratch specifically for reading literature, essays, and textbooks.
True Offline Independence
Powered by a dedicated Service Worker and Cache API pipeline. Pre-caches the Next.js shell and the heavy 1.2MB PDF.js rendering worker so you can read without Wi-Fi.
100% Private & Local Storage
Zero cloud database. Your documents and notes are stored exclusively in your browser’s local IndexedDB. Your reading habits are never logged, analyzed, or sold.
Scale-Invariant Highlights
Highlight passages in yellow, green, blue, or pink. Coordinates are stored in normalized proportional math so they never drift or misalign when zooming from 50% to 300%.
Reading Velocity & Completion
Kindle-style time remaining. Filters out rapid skims (< 3s) and pauses when you step away to compute your genuine learning speed and pace.
Complete Data Sovereignty
Export your complete library into a standardized, versioned JSON backup file with one click. Restore on any machine with safe schema validation.
Reading Themes & Zen Mode
Switch between Clean Paper, Warm Sepia, and Midnight Dark. Press fullscreen to hide all toolbars and immerse yourself entirely in the text.
Why Local-First reading matters.
Reading is an intimate, contemplative activity. Your book collection and margin notes should belong to you, not sit inside someone else’s cloud database.
| Dimension | Web Book Reader | Traditional Cloud Readers | Native OS PDF Viewers |
|---|---|---|---|
| Server Upload | None (100% In-Browser) | Mandatory server upload | Local file only |
| Offline Reliability | True Offline Service Worker | Unreliable or breaks offline | Offline, but no reading stats |
| Account & Sign-Up | Zero friction • No sign-up | Mandatory account & email | No account |
| Reading Velocity & Stats | Kindle-style time-to-read | Often missing or paywalled | None |
| Data Export & Portability | 1-Click JSON Backup & Restore | Vendor locked | Manual file management |
Three steps to distraction-free reading.
Import Your PDF
Drag and drop any PDF book. It is parsed and stored instantly inside your browser's Cache API without creating an account or waiting for a server upload.
Read in Peace
Enjoy continuous vertical scroll, customizable font scale, Sepia or Dark themes, and effortless multi-color text highlights that remain saved as you read.
Retain & Export
Your reading velocity and active hours are recorded locally. Download your entire library and annotations as a standard JSON backup whenever you wish.