Vowborn Studio / Panel Shelf
The UltimateReader.
A fast, local reader for comics, EPUB and PDF on Windows. Read, organise and understand your books with built-in definitions, explanations, and AI-powered tools when you need a little more context.
- CBZ
- CBR
- CB7
- EPUB
- Image folders
01 / Library
Your library.
Panel Shelf works directly with the files on your computer. Point it at your folders and keep your collection organised without moving or renaming anything.
- 01
See what you’re reading
Quickly find books you’ve started, haven’t opened yet, or have already finished.
- 02
Make it look right
Adjust cover sizes, show or hide titles, and choose the layout that works for you.
- 03
Keep everything organised
Separate your library into categories and keep different collections apart.
02 / Formats
Comics, books and PDFs. One reader.
Open your comics, EPUBs and PDFs in one place.
- 01
Comic archives
Open CBZ, CBR and CB7 files.
- 02
EPUB books
Open and customise your EPUBs, with control over how your books look and read.
- 03
PDFs
Open your PDF files and read them alongside everything else in your library.
- CBZ
- CBR
- CB7
- ZIP
- RAR
- 7Z
- EPUB
- Image folders
03 / EPUB Reader
Customise your EPUBs.
Change how your EPUB books look and read, with controls for page colour, typeface, size, margins and line spacing.
- 01
Page colour
Paper, white, sepia, dark or black.
- 02
Typeface and size
Choose the book’s own font, a serif or a sans, from 70% to 200%.
- 03
Margins and lines
Set a wider or narrower page, with tighter or looser line spacing.
04 / Free AI
Understand what you’re reading.
Bring your own API key and get AI help right inside Panel Shelf.
Free AIFree API keys are enough, and we show you how to set them up.
- 01
Define in context
The meaning the sentence uses, and why.
- 02
Remember words
Saved words are marked wherever they appear again.
- 03
Learn new meanings
A familiar word used differently gets its own entry.
Supported providers
- Gemini
- Groq
- Mistral
- OpenRouter
- Cerebras
- OpenAI
- DeepSeek
- Together
05 / Quotes
Save quotes and notes.
Save passages while you read and add your own notes to them. Every quote keeps its book and its exact place, so you can come back to it later.
- 01
Select and save
Right-click any passage — in a book, a PDF, or a comic’s bubbles.
- 02
Write a note
Add your thoughts directly beside the quote.
- 03
All in one place
See your saved quotes organised by book, with one click back to where you found them.
06 / Page text
Built-in OCR.
Turn text in scanned pages and comic panels into selectable text. Search it, copy it, define words, or save quotes just like regular text.
- 01
Comic panels
Detect text in speech bubbles and other lettering.
- 02
Select and use
Select detected text to copy it, define words, or save quotes.
- 03
Scanned pages
Read text from scanned PDFs and other image-based pages.
- 04
Search
Search through text that was originally part of an image.
Get Panel Shelf
Everything you need to read.
A single Windows app for your comics, EPUBs and PDFs, with built-in tools for organising, understanding and enjoying your library.