Free & open source · Windows 10/11
Open your course files. Listen to your readings. Keep studying locally.
A lightweight Windows study workspace for the files your professors assign.
Open PDFs, Word files, slides, spreadsheets, Markdown, and notes without Microsoft Office. Listen to supported readings aloud, keep a course folder in one local vault, and return to the same session tomorrow. No account. No cloud upload. Completely free.
Before you open it: Windows may show an "Unknown Publisher" warning because this free open-source build is not digitally signed. Download only from the official release page, compare the checksum, then click "More info" and "Run anyway". Verify source code on GitHub.
GPLv3 licensed · portable .exe · no account · no telemetry
# Cell Respiration — Week 4
Glycolysis happens in the cytoplasm and produces 2 ATP net.
## Key stages
- Glycolysis → pyruvate
- Krebs cycle → NADH, FADH2
- Electron transport chain → ~34 ATP
Portable Windows app
One .exe, no admin rights required
Private by default
Your documents stay on your computer
Open source
Read the code and follow development
Ready for Windows
Runs locally on Windows 10/11
Open a file. Press F9. Keep studying.
One local workspace for the files your course already uses
EleViewer is a portable study workspace for Windows 10 and 11. Open readings, notes, slides, and spreadsheets without installing several heavy apps, then use text-to-speech, bookmarks, and session restore to keep the whole study session together.
Open the files professors assign
Open Word documents, slides, spreadsheets, PDFs, Markdown, CSV, HTML, and TXT from one small portable app—even when Microsoft Office is not available.
Listen to readings while you study
Use built-in Windows voices to read selected text or supported documents aloud while you walk, commute, or rest your eyes.
Keep private notes private
No account, no ads, and no usage tracking. Your documents are opened and processed locally on your Windows computer.
Return to the same study session
Add a course folder, bookmark your place, and reopen your tabs and reading position when you come back.
Your first study session
Everything you need to start studying in one window
Open a reading, listen when your eyes need a break, save your place, and return to the same work later — without switching between several heavy apps.
Split-Screen Web Browser
Press Ctrl+T to open a split-screen web browser with built-in downloads and smooth page zoom, so you can research without losing your place.
Keep a course folder close
Point EleViewer at a course folder and keep its supported files one click away in the sidebar. Toggle it with Alt+V whenever you need it.
Find the next file fast
Press Ctrl+Q to search recent and pinned files without digging through folders. Type a few letters, press Enter, and keep working.
Pick up where you stopped
Close EleViewer in the middle of a study session and reopen it later with your tabs restored, including the active tab when the files are still available.
Save your place
Bookmark pages and files in a dedicated panel so you can return to the important part of a long reading tomorrow.
Global Quick Note
Press Alt+E to instantly open a quick scratchpad from anywhere in Windows to jot down an idea without losing your focus.
Interactive Playground Tutorials
Learn power-user shortcuts and document manipulation through guided, step-by-step spotlight overlays directly inside the app.
PDFs that read to you
Native Windows text-to-speech turns selectable text in lecture slides or readings into audio. (Windows 10/11 only)
Start with these shortcuts
Learn three shortcuts first. Keep the rest for later.
Start with Ctrl+O to open a file, F9 to listen, and Alt+V to add a course folder. The other shortcuts are here when you want to move faster.
- Open a course fileCtrl+O
- Show Read AloudF9
- Show the course-folder sidebarAlt+V
- Find a file quicklyCtrl+Q
- Find text in the current documentCtrl+F
- Bookmark your placeCtrl+D
- Create a new noteCtrl+N
- Save the current fileCtrl+S
- Close the current tabCtrl+W
- Find and replaceCtrl+H
- Open the web panelCtrl+T
- Reopen a closed tabCtrl+Shift+T
- Show bookmarksCtrl+Alt+B
- Open settingsAlt+S
- Open the global quick note scratchpadAlt+E
- Toggle distraction-free reading modeCtrl+Alt+T
Help shape what Eleviewer becomes next
Once you have tried the core workflow, Nightly Insiders is an optional community for students, power users, and developers who want to test new builds, report issues, and suggest features. You can use EleViewer without joining, and the public release remains the simplest place to start.
Early Access
Test unreleased builds and new document format previews before they reach the general public.
Feature Voting
Participate in community polls to influence which features are prioritized next.
Direct Access
Chat directly with the core developer, share feedback, and get fast support during active hours.
Open source, forever
Free because earlier open-source tools made the creator's education possible
EleViewer exists because open-source tools made its creator's education possible. It is intended to remain free, ad-free, and not collect personal usage data. If it helps you, star it, share it, or contribute.
GPLv3 licensed
Use it, fork it, and include it in your own project, subject to the copyleft requirements of the GPLv3 license.
Single-file, portable
One .exe. Runs from a USB stick or on lab machines where you can’t install software or get admin rights.
No account, no telemetry
Your documents are opened and processed locally on your machine; they aren’t uploaded to any server.
Yours to build on
Python + PySide6 codebase organized with a straightforward factory pattern and minimal external dependencies.
Read the GNU GPLv3 license or browse the source code.
FAQ
Start using EleViewer with confidence
The short answers to the questions that come up before your first study session.
Download it. Open a course file. Press F9 when you want to listen.
One portable .exe for Windows 10/11. Download, double-click, press Ctrl+O to open a file, and use Alt+V later when you want a local course folder.
ℹ️ SmartScreen Notice: Windows may show an "Unknown Publisher" warning because this portable binary is open source and not digitally signed with a code-signing certificate. Click "More info" and then "Run anyway". Verify source code on GitHub.
Something broken? Open an issue