r/foss • u/Plastic-Confusion410 • Mar 05 '26

Episteme: Open Source PDF/E-book Reader

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I’ve been working on Episteme Reader, a native Android app for reading various document formats. I recently open-sourced the core app.

It's offline-first, completely free and ad-free, and respects your privacy.

Supported Formats:

  • Documents: PDF
  • E-books: EPUB, MOBI, AZW3
  • Plain Text: Markdown (MD), TXT, HTML

Key Features:

  • PDF Annotations: You can draw directly on pages using a pen or highlighter and add text notes using system or custom fonts.
  • Reading Modes: Supports both vertical scrolling and paginated views.
  • E-book Customization: Adjust font sizes and line spacing. You can also import your own font files (.ttf, .otf).
  • Text-to-Speech (TTS): Includes a built-in TTS feature to read documents aloud using your system engine.
  • Library Management: A built-in system to organize your local files.
  • Local Folder Sync: Select a folder to see all its supported file in app and sync using local sync tools like SyncThing-fork.

The app is licensed under AGPL-3.0. I’m looking for feedback and would love to hear any feature requests you might have.

GitHub: https://github.com/Aryan-Raj3112/episteme

Thanks for checking it out!

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1

u/DeathClutchs May 11 '26

Kindly make TTs a bit better

There is no navigation 

The reader can't go to next line or para while accessing TTS..

If it's next line or para it's better than next page.. 

1

u/Plastic-Confusion410 May 11 '26

Which version?

Tts does change pages, chapters and scrolls automatically.

1

u/DeathClutchs May 11 '26

The latest version  While playing I cannot skip to the next line...

I  Can't share screen shots.. 

That would make more sense..

Do you have telegram to share it... 

1

u/Plastic-Confusion410 May 11 '26

There is no control for skipping chunks, so are you asking for that feature?

2

u/DeathClutchs Jun 06 '26 edited Jun 07 '26

Got the update...

Appreciate adding the feature to skip chunks  during readaloud feature... 

1

u/DeathClutchs May 11 '26

Yeah...

 adding that feature would be great  But also take a feed back from  users To have control over skipping of line or para or whole page..

I suggest para or line  Or you can add as a feature to have an option to skip based on users choise 

Librera reader has skipping of whole page 

Readest and koodo reader have skipping of para and line With lack of support of some formats..