Episteme
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Show tabs in top app bar
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Terms of Service
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%1$d selected
Clear Selection
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Info
Select All
Remove from Recents
Warning: Some selected items are synced from a local folder. Proceeding will delete the actual files from your device storage.\n\nThis action cannot be undone.
File Information
Book Name
Copy Name
Original Name: %1$s
Revert to Original
File Name: %1$s
Author
Format
Size
Added
Location
Source: OPDS Stream
In-App Storage
Internal storage
About Episteme
Version: %1$s (Build: %2$d)
Select a File
Clear All Synced Data?
Are you sure you want to permanently delete all of your book data from the cloud? This will also wipe your local library to prevent re-syncing. This action cannot be undone.
DELETE ALL DATA
Home
Library
Recent Files
Your Library is Empty
Select a file to read, or sync a local folder to automatically import books.
No Recent Files
Open a file from your library to see it here.
Setup Folder Sync
Sync Folder
Local Folder
OPDS
Pinned
%1$d%% complete
Not available locally
Sign in with Google
By signing in,
Episteme Pro
Upgrade to Episteme Pro
Sync Library
Cloud sync for Local Folders
Upload books from your synced folders to Google Drive.
Custom Fonts
Support the Project
Help & Feedback
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Recent Files Limit
No limit
%1$d files
Clear Book Cache
Clear Reflow Cache
Library
Search title or author…
Types: %1$s
Folders: %1$d
Status: %1$s
All Books
Shelves
Folders
Catalogs
No results found for \"%1$s\"
Select a PDF, EPUB, MOBI, or AZW3 file from your device to get started.
Add file
New shelf
Create New Shelf
Shelf Name
Create
Rename shelf
Delete shelf
Add books
This shelf is empty
Add to %1$s
ADD (%1$d)
No unshelved books to add
All books are already in this shelf
Rename Shelf
Delete Shelf?
Are you sure you want to delete the \'%1$s\' shelf? All books will be moved to Unshelved.
Remove from Shelf?
Delete %1$s?
Are you sure you want to delete the %1$d selected %2$s? All books within will be moved to Unshelved.
Sync Local Folders
Connect local folders to create a live library. Episteme will monitor files and sync progress.
Add Folder
Scan All
Scanning…
Sync Meta
LAST SYNC
BOOKS
Edit Filters
Remove Folder
Disable local sync
Enable local sync
Local sync disabled
Disable local folder sync?
Episteme will stop scanning this folder and stop writing JSON sync files. Remove the %1$s folder from this folder too?
Keep sync data
Remove sync data
Filter File Types
Select the file types you want to sync from this folder:
Filter Library
File Type
Source Folder
Read Status
Clear All
In-App Storage
Save File?
Do you want to save this external file in the app\'s library? If not, it will be removed.\n\n(You can change this default behavior anytime from the Home Screen > More Options > External File Behavior).
Don\'t ask again
Keep in Library
Remove
Ask Every Time
After closing an externally opened file, ask whether to keep it in the library or remove it.
Always Keep
Externally opened files are copied into the library and kept after closing.
Always Remove
Externally opened files are copied for reading, then removed after closing.
Open Temporarily
Open directly from the source app in a temporary reader. Back returns to that app without adding the file to the library.
External File Behavior
Add Catalog
Search catalog…
This feed is empty.
Downloading…
Loading…
Stream
Unavailable
Download
Download Format
Stream Now
Read
No supported formats available.
PUBLISHER
PUBLISHED
LANGUAGE
Synopsis
Edit Catalog
Add OPDS Catalog
Catalog Name
URL
http://192.168.1.50:8080/opds
Authentication (Optional)
Username
Password
Delete Catalog
Are you sure you want to delete \'%1$s\'?
Deleting this catalog will also permanently remove %1$d streaming books associated with it from your library.
Preset
Free Plan
$0
Forever free
Multiple Formats
Supports PDF, EPUB, MOBI, AZW3
Android Text-to-Speech
Listen to your books with built-in TTS
Basic Dictionary
Look up single words quickly
Current Plan
50% OFF
Loading price…
One-time payment
Lifetime Access
Early Access Sale
Features:
Cloud Sync Across Devices
Keep your entire library, including book files and reading progress, synced across up to 4 devices.
Summarization
Get 10 free summaries of chapters or pages per day
Smart Dictionary
Search phrases and even paragraphs, not just single words
Priority Feature Requests
Your suggestions get prioritized
Pro Features Unlocked!
Sign in Required
Verifying purchase…
Existing Purchase Found
Get Lifetime Access
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Please sign in to your Google account to purchase Episteme Pro.
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This may take a few moments. Your Pro status will be updated automatically.
This device already has a Pro purchase, but it\'s linked to a different account. Please sign in to the account that was used for the original purchase to restore your Pro features.
You\'re getting Episteme Pro at a special discounted price during our early access period! This is a limited-time offer.
Please sign in to your Google account to purchase Episteme Pro and unlock all premium features.
Not Now
Got It!
Custom Fonts
Import Font
Google Fonts
Browse Google Fonts
Search 1900+ fonts…
Popular Choices
No fonts found matching \'%1$s\'
Already Downloaded
No Custom Fonts
Import TTF or OTF files to use them in your books.
Grumpy wizards make toxic brew for the evil queen! 1234567890 ?.,;:
Preview unavailable (Invalid font file)
Delete Font?
Are you sure you want to delete \'%1$s\'? This will remove it from all your devices if sync is on.
Delete Fonts?
Are you sure you want to delete %1$d selected fonts? This will remove them from all your devices if sync is on.
Get in Touch
Found a bug, have a feature request, or just want to say hi? Let us know on GitHub or email us.
GitHub Issues
Report bugs, request features, and track development progress.
Email Support
Contact us directly via email for any other inquiries.
Support the Project
Help keep Episteme moving
Your support helps me keep maintaining and Improving Episteme for everyone!!!
Sponsor on GitHub
Support development directly through GitHub Sponsors. As a thank you, you get a README shoutout in the project repo.
Join on Patreon
As a thank you for backing the app, Patreon supporters get extra content and benefits: sneak peeks at what I am working on, early screenshots and updates, votes that help shape how new features should look and work, and a README shoutout in the project repo.
Unlock Episteme Pro
Sync across devices is a Pro feature. Unlock all pro features with a single, one-time purchase.
Upgrade
Confirm Sign Out
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Device Limit Reached
To use Episteme Pro on this device, please remove one of your existing registered devices.
Last seen: %1$s
Confirm Destructive Action
This will permanently delete all your books and reading progress from this device AND from your Google Drive account. This action cannot be undone. Are you sure?
Clear Book Cache
This will clear all processed pages in pagination mode. This helps fix layout issues but will require books to be re-processed next time you open them.
Confirm & Clear
Clear Reflow Cache
This will delete all generated \'Text View\' versions of your PDFs and clear their associated images/HTML cache. Your original PDFs will remain untouched.
Back
Dictionary
More Options
Page Slider
Table of Contents
Text Format
Search
AI Features
Start Text-to-Speech
Stop Text-to-Speech
Pause
Resume
Enable Dark Mode
Disable Dark Mode
Lock Panning
Unlock Panning
Full Screen
Show Highlights
Hide Highlights
Annotation Mode
Exit Annotation Mode
Close Search
Clear Search
Show Results
Hide Results
Previous Result
Next Result
Exit the reader and return to the home screen
Choose your preferred app for word lookups
Access reading mode, bookmarks, and advanced settings
Drag to jump quickly to any page in the document
Browse chapters and navigate to any section
Adjust font, size, line height, alignment, and custom fonts
Find any word or phrase in this book
Summarize the current chapter or page using AI
Read the book aloud using your device\'s voice engine
Stop the current read-aloud session
Pause the current read-aloud playback
Resume paused read-aloud playback
Invert PDF colors for dark mode
Disable dark mode and restore the original PDF colors
Lock horizontal panning on the page
Unlock panning to re-enable pinch-to-zoom and drag gestures
Hide all UI controls for an immersive, distraction-free reading view
Visually mark selectable text regions across the current page
Remove the selectable text overlay from the page
Add ink or text annotations
Finish editing and return to normal reading view
Exit search and go back to the reader
Erase your current search query and start over
Expand the panel to see all search matches
Collapse the search results panel
Jump to the previous search match in the document
Jump to the next search match in the document
Sign In
Select Folder
Select
Privacy Policy • Terms of Service • Licenses
Episteme OSS
[Debug] Show Device Management
[Debug] Clear Cloud & Local Data
FPS: %1$d
Your device doesn\'t support folder selection. You can still import files individually.
No file manager found. Please install a file manager app.
Feedback: Episteme Reader
Downloaded %1$s
%1$s: %2$s
Never
%1$s: %2$d
Removed %1$d streaming books.
Failed to import font: %1$s
Text view deleted.
Sync requires Google Drive permission.
An error occurred with the purchase.
Upgrade successful! Welcome to Pro.
Purchase verification failed. Please contact support if you were charged.
This device was removed from your account.
Could not verify this device. Please check your connection.
Failed to update devices. Please try again.
Saving PDF…
PDF saved successfully.
Failed to open file for saving.
Error saving PDF: %1$s
Saving original PDF…
Original PDF saved successfully.
Saving original file...
Original file saved successfully.
Error saving file: %1$s
Sharing: %1$s
Share PDF
Share file
Share failed: %1$s
Limit reached: Maximum %1$d folders allowed.
This folder is already synced.
Folder added: %1$s
Failed to access folder permissions.
Folder removed.
Folder Sync: Updating metadata…
Scanning folder for new books…
Folder Sync: Scan complete.
Sync failed.
No local folders have sync enabled.
Local folder sync disabled.
Local folder sync disabled. Sync data folder removed.
Local folder sync disabled, but the sync data folder could not be removed.
Local folder sync enabled.
Enable sync to download files.
Failed to download %1$s.
Enable sync to clear cloud data.
Not signed in, cannot clear cloud data.
Clearing all cloud and local data…
All cloud and local data cleared successfully.
Error: Failed to clear all data.
All local data cleared.
Sign in failed. Please try again.
Could not find a Google account. This can happen on a fresh install, please try again in a moment.
An error occurred during sign in. Please check your internet connection.
Please sign in to test device management.
Sync is an Episteme Pro feature.
Not signed in, cannot sync.
Cloud Sync: Checking for updates…
Cloud Sync: Complete.
Failed to sync library.
Could not find recent item.
Failed to import file.
Could not find file location.
This file type is not supported.
Failed to load generated text view.
Text view generation failed.
Failed to load FB2: %1$s
Failed to load file: %1$s
Failed to load MOBI: %1$s
Failed to load EPUB: %1$s
File deleted from folder. Removed from library.
A shelf with that name already exists.
Deleting from all devices…
Deletion complete.
Cloud sync failed, deleted locally.
Reflow cache & generated text views cleared.
Search in book…
No results found.
Generating summary…
Stop
Read aloud
Copy
Copy Thread
No summary could be generated.
Thinking…
Open in Dictionary App
AI could not provide a definition.
Asking AI about \'%1$s\'…
Text-to-Speech Settings
Please stop playback to change settings.
Synthesis Mode
On-Device
Cloud (HQ)
Voice Selection
Play Sample
On-Device Voice Settings
Close Settings
System Default
Matches your Android system settings
Selected
Loading voices…
No voices available on this device.
Specific Voices
Available Voices (%1$d)
No voices found for this language.
Variant: %1$s
This is a sample of %1$s.
Reading Themes
Presets
Textured Presets
My Themes
My Textured Themes
No custom themes yet. Tap \'+\' to create one.
No custom textured themes yet.
New Theme
New Textured Theme
Edit Theme
Theme Name
So many books, so little time.
- Frank Zappa
⚠️ Low contrast! This might cause eye strain.
Page Color
Text Color
Texture
None
Upload
Texture Transparency
Live Preview
Reading is dreaming.
Hex
R
G
B
Text is empty.
AI returned an empty definition.
Could not get definition.
An unknown server error occurred.
Network error. Check connection.
Not enough context for a recap.
Failed to parse recap.
Network error during recap generation.
Lookup Settings
Dictionary Engine
Smart (AI)
External App
Uses AI for definitions. Will fall back to the external app below if offline or if the selected phrase is too long.
Uses the selected app for dictionary lookups.
Fallback App
Dictionary App
Select an app
Translate
App used for translating selected text.
Search App
App used for web searches.
None
The book content is empty.
Failed to parse summary from server response.
Could not fetch summary.
Error: %1$d. %2$s
Network error. Please check connection and server status.
Analyzing Chapter %1$d…
Reading current position…
Generating Recap…
Chapter Summary
Story Recap (Beta)
Unlock Chapter Summarization
Get concise summaries of any chapter with Episteme Pro. Upgrade to start using this feature.
Learn More
Unlock Smart Dictionary
Defining entire phrases and paragraphs up to 2000 characters is a Pro feature. Upgrade to get instant definitions for any selected text.
Bookmark
Selected Slot
Customize Palette
Tap a slot to edit:
Select a color for the slot:
This chapter is empty.
Chapter not found
Error loading chapter
Dictionary Settings
Theme
Theme Settings
More Options
View Original PDF
Delete Text View
Vertical
Vertical (WebView)
Vertical (Native Beta)
Paginated (left-to-right)
Enabled
Remove bookmark
Bookmark this page
Tap to Turn Pages
Volume Button Scrolling
Volume Button Page Turn
Realistic Page Turns
Keep Screen On
Visual Options
Screen Orientation
Change Reading Mode
Paginated (right-to-left)
Auto Scroll
TTS Settings
TTS Voice Settings
TTS Word Replacements
Book Word Replacements
Share, Save or Print
TTS Settings (Debug)
Navigate with slider
Chapters Menu
Text Formatting
Chapter Summarization
Recap (Beta)
Stop TTS
Start TTS
Pause TTS
Resume TTS
Previous TTS chunk
Next TTS chunk
Exit slider navigation
Start page thumbnail
Expand
Collapse
Play
Local Speed
Global Speed
Select Mode
Applies to all files
Saved for this file only
Disable Musician Mode
Enable Musician Mode
Swap Controls
Min
Max
Slower
Faster
Decrease
Increase
Page %1$d of %2$d
Chapters
Tabs
Bookmarks
Highlights
Pages
Images
Expand All
Collapse All
Locate
You haven\'t added any bookmarks yet.
No images found.
Download image
More options for bookmark
Rename Bookmark
New Name
New Title
Delete Bookmark?
Are you sure you want to permanently delete this bookmark?
No highlights yet.
Unknown Chapter
Options
Delete Highlight?
Are you sure you want to permanently delete this highlight?
Saved %1$s
Could not save image.
Original PDF not found.
Error: Book content not found. Path: %1$s
Please select a dictionary app first.
Please select a translate app first.
Please select a search app first.
No chapters available for this book.
Navigating to position…
Permission Required
To show playback controls while the app is in the background, please grant the notification permission.
Continue
Justified Text Limitation
Using Justified alignment in Paginated Mode may cause text selection and highlights to be inaccurate due to layout limitations.
I Understand
Navigating to chapter…
Select an offline dictionary first.
Book is not paginated yet.
Wait for book to load fully.
Release for Previous Chapter
Release for Next Chapter
Pull further… (%1$d%%)
Chapter
Could not get chapter content.
Could not determine current chapter.
WebView not available.
Page %1$d/%2$d
Local Format
Global Format
Reset
Size
Spacing
Select Font
Presets
Imported
Import from Files
No imported fonts yet.
Visual Options
Page layout
PDF page spread
Single page
Two pages
First page alone
Starts facing-page spreads after the cover page.
Remove gap between pages
Applies to vertical reading and two-page spreads.
Hide page number overlay
Removes the small page count label from each page.
System UI (Status & Navigation Bars)
Control the visibility of the device\'s system bars.
Screen Orientation
Choose whether the reader follows the system orientation or prefers portrait or landscape when Android allows it.
Progress Bar
The reading progress and chapter indicator on the reading screen.
Position
Seamless Chapter Transition
Instantly load the next/previous chapter when scrolling past the end, without the pull-to-refresh animation.
Remove Edge Padding
Removes the horizontal gap on the left and right edges.
Brightness
Use system brightness
Follows the device brightness setting.
Custom brightness
Applies while a reader screen is open.
%1$d%%
Search
Error opening dictionary
Error opening translate app
Error opening search app
Episteme
Open Source Version
Playstore Version
Version %1$s
Build %1$s
GitHub
Browse source code, star, fork, and report issues.
How we handle your data.
Usage terms and conditions.
Open source libraries used.
Importing %1$d books… They will appear in your Library shortly.
Created shelf "%1$s".
Created smart shelf "%1$s".
Renamed shelf to "%1$s".
Deleted shelf "%1$s".
Updated "%1$s".
Those files are already in the library.
%1$s - %2$s
External Link
You clicked on an external link:\n\n%1$s\n\nWhat would you like to do?
Open
No browser found to open the link.
Save Note
Save
Save Comment
Add Comment
Reply
Add a note…
Add a comment…
Dict
Speak
Note
Comments
Editing comment
Replying to %1$s
Edit
FONT & ALIGNMENT
LAYOUT & SPACING
Font Size
Line Height
Paragraph Gap
Image Size
Horizontal Margin
Vertical Margin
None
Orig
Aa
Voice Adjustments
Speed (%1$sx)
Pitch (%1$sx)
This is how your current voice settings sound.
Pause Book
Resume Book
System Voice / Engine Settings
Global Speed
Local Speed
Applies to all files
Saved for this file only
Scroll to Top
Customize Toolbar
Select the tools you want to keep visible. Unchecking a tool hides it from the UI to give you a distraction-free reading space.
Annotations
All
With Notes
Add Note
Edit Note
%1$d / %2$d
Page %1$d of %2$d
Close Edit Mode
Toggle Visibility
Stylus Only Mode
Pen
Highlighter
Text
Eraser
Undo
Redo
Show Dock
Select Font Family
Select Font Size
Font Background
Bold
Italic
Underline
Strikethrough
Insert Text Box
OCR selection error: %1$s
Selection error: %1$s
Error processing page: %1$s
Unable to display page %1$d.
Could not open print settings
Could not copy to clipboard
Password protected PDF files cannot be printed
Loading PDF…
Error loading PDF
Loading page…
PDF Viewer
Pen Playground
Import SVG
Imported %1$d SVG strokes!
Failed to import SVG or empty.
OCR Language
Insert Blank Page
Delete Page
Generating… %1$d%%
Open Text View
Generate Text View
Share
Save copy to device
Print
Generating Text View…
Indexing pages… %1$d%% done. Search results will update automatically.
Results found on %1$d+ pages
Result %1$d / %2$d
%1$d+ Pages
Summarize Page (Page %1$d)
Downloading %1$s language pack…
Select OCR Language
Choose the primary language/script of this document for better text recognition results.
You can change this later in More Options > OCR Language.
Re-index Document?
You are changing the OCR script to %1$s.\n\nTo ensure search accuracy, we need to clear the existing index and re-scan pages that require OCR using this new language.\n\nThis will happen in the background.
Re-index
Password Protected
This document is encrypted. Please enter the password to view it.
Password
Incorrect password
Hide password
Show password
You are about to navigate to:\n%1$s
Visit
Save to Device
Choose format to save:
With Annotations
Original
Choose format to share:
Preparing PDF…
Add PDF to Tab
No other PDFs found in your library.
PDF is empty or could not be displayed.
Page added at %1$d
Page deleted
Extra page removed
Chapters are not available for this book.
Highlighted section
Straight Line
Spectrum
Done
Red
Green
Blue
Default System Font
Import
No fonts imported
Font color
Highlight
Enable Multi-Tab Reading
Use Strict File Filter
Use PDF Filenames
Language
Test Panel ML Detection
Test Speech Bubble ML Detection
Export Logs (Last %1$d lines)
Enable Strict File Filter
If you enable this, some supported file types like AZW3, CB7, and FB2 might not show up depending on your file manager.\n\nAre you sure you want to enable this filter?
System default
English
English (Default)
العربية (Arabic)
Deutsch (German)
Türkçe (Turkish)
Français (French)
Русский (Russian)
Беларуская (Belarusian)
Español (Spanish)
Português (Brasil)
Italiano (Italian)
Polski (Polish)
Tiếng Việt (Vietnamese)
日本語 (Japanese)
한국어 (Korean)
हिन्दी (Hindi)
简体中文 (Chinese, Simplified)
Eesti (Estonian)
App Theme
Appearance
Contrast
Text Brightness
Color Scheme
Dynamic
Create App Theme
Custom Theme
Ocean
Mint
Rose
Sepia
Amethyst
Amber
Sapphire
Add Custom Theme
App Theme
App Icon
Device
Open Drawer
Profile picture
Profile
Pro Feature
Filter
Sort
Close search
Clear query
Search shelf
%1$s shelf cover
Preserve Image Colors
Keep original image colors when theme changes
Unshelved
All Books
System
Light
Dark
Standard
Medium
High
Recent
Title A-Z
Author A-Z
Percent complete 0–100
Percent complete 100–0
Size (Smallest)
Size (Biggest)
All
Unread
In Progress
Completed
Tags: %1$s
Browse by tag
Tags
Folders
Files
Text to speech
Playback controls for text to speech.
Preparing text to speech
Preparing: %1$s
Active TTS Engine
Cloud AI
Device Native
Cloud Voices
Device Voices
Cloud Cache
Select High-Quality Cloud Voice
Clear Samples
System Default Voice
Uses device settings
Language Filter
Online
Offline
Voice Filter
No audio cached for this voice.
Clear Cache for %1$s
This is a voice sample.
AI Features
Summary
Recap
Cache
No summary for %1$s yet.
Generate Summary for %1$s
Get a recap of the story up to your current position.
Generate Story Recap
Story Recap
Cache Hit • Free
Generated • Free (%1$d/10 left)
Generated • Cost: %1$s credits
Generating… • Cost: Calculating
AI Output
Regenerate
No cached summaries for this book.
Credits
AI & Cloud Credits
Credits Available
%1$d Credits
Estimated Cost Breakdown
Cloud TTS
Cost: ~3–4 credits per minute of audio generated.\nTo enable: Reader Screen > More > TTS Voice Settings.
AI Summaries & Recap
Cost: ~1–4 credits per request based on chapter length.\nPro Users get 10 free summaries daily.
By purchasing,
Out of Credits
You don\'t have enough credits. Get Episteme Pro for 10 free Summaries per day, or add more credits to use Summaries, Cloud TTS and Story Recap.
Get Pro / Add Credits
Unlock Page Summarization
Get concise summaries of any page with Episteme Pro. Upgrade to start using this feature.
Download Bubble Zoom Model
To use the Bubble Zoom feature, an AI model needs to be downloaded (~134 MB). Do you want to download it now?
Translate
Back to Pg %1$d
Page %1$d
Result %1$d / %2$d
Failed to load PDF.
Downloading Bubble Zoom model… %1$d%%
Exit slider navigation
Jump Back
Jump Forward
Scroll to reading page
Annotated Page
Close Image
Toggle search highlights
Drag to move text box
No files icon
Copy %1$s
Tag
List item marker
Reset Zoom
Generate Demo Annotations
Demo Annotations
Open Pen Playground
New Tab
Highlight all text
Toggle Editing Mode
Smart Comic Zoom
Customize Highlights
English, Spanish, French, etc.
Hindi, Marathi, Sanskrit + English
Chinese + English
Japanese + English
Korean + English
Page Unavailable
Document
Generated
%1$s (Text View)
%1$s (Reflow)
Add / Edit
No tags assigned.
Apply Tags
Search or create tag…
Create \"%1$s\"
Pull Distance to Change Chapter
Short
Long
Speed: %1$sx
Pitch: %1$sx
Play/Pause
Reset Speed
Reset Pitch
Select Color
This book has no content to display.
Copied Link
Copied Text
Table of Contents
Bookmark
Jump Back to Page %1$d
Return to previous page
Exit Smart Zoom
Smart Comic Zoom
Toggle Smart Comic Zoom
Screen capture protection
Screen capture protection is on
Screen capture protection is off
Settings
Edit
Restore
%1$s selected
Reader defaults
Debug actions remain in their existing menus.
PDF-specific OCR, annotation, and tool settings remain in the PDF reader.
Gemini
Groq
AI Definition
Chapter %1$d
Location
Custom Font
%1$d. %2$s
An error occurred: %1$s
Error loading document: %1$s
OCR found no text on this page.
Page seems empty or text not extractable.
Cannot summarize a blank page.
Document not loaded.
AI features are unavailable in the offline OSS build.
Blocked for safety reasons.
Choose a model for %1$s in AI key and model settings.
Add a %1$s API key in AI key and model settings.
The AI provider returned an empty response.
AI provider error: %1$d. %2$s
This summary needs a Gemini model because the selected Groq models do not support PDF/image input.
You must be signed in to use feedback.
You must be signed in to submit feedback.
Max 3 images allowed for tickets.
Max 5 images allowed per message.
One or more images exceed the 5MB limit.
Failed to create ticket: %1$s
Failed to send: %1$s
Failed to load feed: %1$s
Empty body
Download failed: %1$s
Download error: %1$s
Purchase failed: %1$s
Could not connect to billing service.
Products not found.
Failed to query products
Not available in Open Source version
No text to read.
Error starting playback.
Failed to load audio.
Playback error: %1$s
Cloud TTS is not configured.
Unknown Book
AI keys and models
Saved keys
Add or replace key
Provider
API key
Save key
Use one model for all features
When off, each reader AI feature uses its own selected model.
All AI features
Smart dictionary, summaries, and recaps all use this model.
Smart dictionary
Used when defining selected words or phrases.
Summaries
Used for EPUB summaries and PDF page summaries. PDF/image summaries need Gemini.
Recaps
Used for story recap generation.
Uses the saved Gemini key. Only %1$s is supported for now.
Save %1$s key?
After saving, only the first 3 and last 3 characters will be visible. To change it later, replace or delete it.
Delete %1$s key?
Features using this provider will stop working until a new key is saved.
No key saved
Delete %1$s key
Model
No model selected
Show AI in reader
Hide AI in reader
Solid Colors
Textured
Custom Solid
Custom Textured
Select Custom Texture
Text Brightness (Light)
Text Brightness (Dark)
Default
Left
Right
Justify
Always Show
Sync with Menus
Always Hide
Top
Bottom
Restore original metadata?
This will write the original title, author, series, and summary back into the EPUB file. Reading progress, tags, and notes will not change.
EPUB metadata edited
Metadata from EPUB file
Display name changed in app
Metadata from file
Metadata
File
Title
Series
Reading
File name
Modified
Summary
Library tags
Editable metadata
Display name
Name shown in Reader
Original file: %1$s
Top Bar
Bottom Bar
Hidden Tools
More menu
Hidden tools
Drop tools here
Drag to reorder
External Apps
Navigation Slider
Brightness
Sidebar
Highlight selectable text
Edit Mode
TTS Controls
Reading Mode
Page Management
Text View (Reflow)
Current book
Global
This book
Enable replacements
Rules here apply to every book unless disabled for a specific title.
Add rule
Add book rule
No global replacement rules yet.
No book-specific rules yet.
Use global rules here
Turn this off when a book needs its own pronunciation choices.
Enable book rules
Local rules run after global rules.
Inherited global rules
No global rules to inherit.
Allowed in this book
Disabled for this book
Suggestions
Dr. Smith met NASA at 5 p.m.
New replacement
Edit replacement
Replace
Speak as
Enabled
Regex
Whole word
Match case
Preview input
Rules
silence
Plain text
case-sensitive
Current book
Add rule
No replacement rules for this book yet.
New replacement
Edit replacement
With
empty text
Alice met the White Rabbit.
Nederlands (Dutch)
Українська (Ukrainian)
Bahasa Indonesia (Indonesian)
About
Desktop reader
Desktop access
Account
Account & credits
Account overview
AI hub
Used for EPUB summaries and PDF page summaries.
Episteme oss
Author text
Cache: %1$s
Cached
Cached summary
Choose the Gemini voice used for cloud read aloud.
Delete generated desktop book and EPUB pagination cache files? They will be recreated the next time books are opened.
Clear voice cache
Close tools
Cloud sync
Cloud TTS needs Gemini
Cloud TTS needs signed-in credits
Cloud TTS ready
Cloud TTS settings
Cloud TTS unavailable
Cloud TTS voice
Contains
Cost calculating
Create a recap up to your current position.
Create smart shelf
%1$d credits available
%1$s credits
Imported fonts for the reader
Delete font
Delete %1$s? Books using it will fall back to the default font.
Delete \"%1$s\"? Books stay in your library.
Delete summary
Disabled
Drop files to import
Drop supported files to import
Contact us directly by email for anything else.
Equals
Extras
Feedback
Field
Folder path
From here
Full scan
Free, %1$d left
Generate recap
Generate summary
Report bugs, request features, or contact support directly.
GitHub Sponsors
Support development through GitHub Sponsors.
Google sign-in is not configured for this desktop build.
Greater than
Help
Bug reports, feature requests, and support
Hide
Import files
Issues
Open the issue tracker for bugs and feature requests.
Less than
Library and reader
Any
Library actions
More
No cached summaries for this book yet.
Import TTF, OTF, or WOFF2 files to use them in books.
No fonts found matching \"%1$s\"
No Google account is connected.
No summary cached for this section.
Offline desktop reader
Open readers
Opening %1$s
Opening your library
Operator
Page
Password protected PDF
Patreon
Support the project on Patreon.
Paused
%1$s requires a password before it can be opened.
Password is required or incorrect.
That password did not open %1$s. Enter the PDF password and try again.
Percent
Plan
Preparing audio
Preferences
Account & credits
Account & credits
Pro is not unlocked for this account.
Pro and credits can only be purchased from the Android app. Desktop checks the same signed-in account and uses those credits for cloud TTS, summaries, recaps, and other paid AI features.
Sign in to check your account status on desktop.
Pro is unlocked for this account.
Progress
Project
Reader
Reader tabs off
Reader tabs on
Refresh
Release to add to your library.
Secure key storage is unavailable on this operating system. Keys entered here will be used for this session but will not be persisted.
Settings hub
Matches the Android hide toggle for smart dictionary, summaries, and recaps.
Sync account, Pro, and credits
Signed in
Source code
Browse the project source on GitHub.
Stop reading to change voices.
Support
Support Episteme
Contributions help keep the reader improving across Android and desktop.
Ways to support Episteme development
Sync folders
Sync metadata
Tag name
Tag selected books
Title text
Tools
Import, sync, and app settings
Type, e.g. PDF
View
Voice cache
Preparing embedded webview…
Preparing bundled embedded webview %1$d%%
Embedded webview installed. Restart Episteme to finish setup.
Embedded webview could not start: %1$s
Working…
Workspace
Add to shelf
Create a shelf first, then add selected books to it.
Create theme
Existing: %1$s
You clicked an external link.
Edit EPUB metadata
Less
…more
No custom themes yet
Rename in app
Tags, comma separated
Unknown
Define
Annotation
Annotation options
Annotation tools
Assist
Choose which PDF to save.
Clear jump history
Cloud TTS failed.
Add a Gemini key and select Gemini cloud TTS in AI keys and models.
Cloud TTS is not configured for this desktop build.
Sign in with Google to use cloud TTS.
Cloud TTS needs a signed-in account with credits. Pro and credits can only be purchased from the Android app.
Color
Comment options
Custom
This removes the annotation from this PDF.
Delete annotation?
Document text
Embedded PDF comment
Failed to render page.
Feature unavailable
Finished
Fountain pen
Hide search results
Highlight color %1$d
Highlighter palette
Interaction
Indexing %1$d/%2$d pages
Markup
%1$d matches
%1$d matches so far
Next page
Next search result
No annotations yet
No bookmarks yet
No comment
No matches
No matches in indexed pages yet
No table of contents
There is no text here to read.
There is no text on this page to read.
There is no text to summarize.
Open comment
Out of credits. Pro and credits can only be purchased from the Android app.
Using cloud TTS needs credits on desktop. Pro and credits can only be purchased from the Android app.
Using this feature needs credits on desktop. Pro and credits can only be purchased from the Android app.
Using recaps needs credits on desktop. Pro and credits can only be purchased from the Android app.
Using summaries needs credits on desktop. Pro and credits can only be purchased from the Android app.
Pan
PDF action failed
The PDF action could not be completed.
PDF comment
p. %1$d
PDF page %1$d
Page %1$d - %2$s
Page %1$s of %2$d
Pages %1$s of %2$d
PDF saved
PDF tools
Pencil
Preparing selection
Preparing %1$s
Previous page
Previous search result
The print dialog has finished.
Pro required
This feature requires Pro. Pro can only be purchased from the Android app, then desktop will use the upgraded account after sign-in.
Multi-word smart dictionary requires Pro. Pro can only be purchased from the Android app, then desktop will use the upgraded account after sign-in.
Reader AI features are hidden.
Desktop AI is not configured for this build.
Applies to vertical reading and two-page spreads.
Round highlighter
Saved to %1$s
Scroll
Search in PDF
Select text
Selected %1$s
Show search results
Sign in with Google to use this feature on desktop.
Sign in with Google to use multi-word smart dictionary on desktop.
Sign in with Google to use recaps on desktop.
Sign in with Google to use summaries on desktop.
Stopped
Text note
text note
Text style
Thickness %1$s
TOC
Type to search this PDF
Untitled
View account & credits
Voice cache cleared
Zoom
Zoom in
Zoom out
Choose
Continue reading
Dismiss
Down
Up
AI
Center
Authors
Back to library
Book actions
Folder
Browse
Categories
Ch. %1$d
Chapter Turns
Choose font
Choose reader texture
Clear file types
Clear page annotations
Clear sources
Clear status
Clear tags
Close reader
Continuous
Covers
Custom colors
Custom theme preview
Decrease %1$s
Define page
This removes the highlight and its note.
Enter full screen
Exit full screen
External lookup
Books
Comics
Documents
Other
Text and web
Fill
Fixed-layout appearance
Folder is empty
No supported files or subfolders are available here.
%1$s, %2$s
%1$s - %2$s
Hide filters
Hide reader tools
Tap a slot, then pick a color.
Continue reading and recent books
Import books
Import folder
Imported fonts
%1$s %2$s
Increase %1$s
Jump history
Layout and Spacing
Import files into app storage or add a folder to read files in place.
Browse your collection
AI keys
Smart %1$d
Unread %1$d
In progress %1$d
Complete %1$d
List
Navigation
No book open
Add a folder to read files from that folder in place.
No folders yet
No navigation items
No page content
No settings found
Manual shelves and series collections will appear here.
No shelves yet
Create smart shelves to collect books by rules.
No smart shelves yet
Tags added to books will appear here.
No tags yet
No supported files were imported.
Catalog
Delete "%1$s"? Streamed books from this catalog may stop opening if credentials change later.
No catalogs
Add an OPDS catalog to browse remote books.
Browse catalogs, streams, and downloads
Open Book
Open folder
Open PDF
Page and text colors
Page Info
Page width
These defaults apply where the platform supports shared PDF appearance. Per-book PDF overrides stay in the PDF reader.
PDF file actions
PDF highlighter
Saved with reader highlight transparency.
Pin
Reader-managed PDF tools
Auto-scroll, OCR, annotation defaults, and PDF-only tool visibility are managed inside the active PDF reader.
%1$s %2$s of %3$d (%4$d%%)
Reader toolbar defaults are managed from the reader on this platform.
Reader tools
Save image
Search: %1$s
Search in reader
Search settings
Selection
Selection end handle
Selection start handle
Add shelves, tags, or folder metadata to organize your library.
Collections, series, tags, and folders
Show reader tools
Folder
Smart
Solid
Speed
Start auto scroll
Stop auto scroll
Stop read aloud
Texture strength
Type to search this book
Typography
Undo annotation
Unpin
Use dark theme
Use light theme
Mono
Sans
Serif
Search books, authors, or tags
No tools
Visible
Replace only what is spoken
Reader text, highlights, and locations stay unchanged.
%1$s -> %2$s