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Quick Start

Get Subtide running in under 5 minutes.


Choose one of the following options:

=== “Binary (Recommended)”

Download the latest backend binary from Releases:

  • subtide-backend-linux
  • subtide-backend-macos
  • subtide-backend-windows.exe

!!! note “Prerequisite” FFmpeg must be installed.

Terminal window
# Make executable (Linux/macOS)
chmod +x subtide-backend-macos
# Run
./subtide-backend-macos

=== “Python Source”

Terminal window
cd backend
python -m venv venv
source venv/bin/activate # Windows: venv\Scripts\activate
pip install -r requirements.txt
./run.sh

=== “Docker”

Terminal window
cd backend
docker-compose up subtide-tier2

The backend will start on http://localhost:5001.


=== “Chrome / Edge / Brave”

  1. Download subtide-extension.zip from Releases
  2. Extract the ZIP file
  3. Open Chrome → chrome://extensions
  4. Enable Developer mode (top right)
  5. Click Load unpacked → select the extracted folder
  6. Pin the extension to your toolbar

=== “Firefox”

  1. Download subtide-extension-firefox.zip from Releases
  2. Open Firefox → about:debugging
  3. Click This FirefoxLoad Temporary Add-on
  4. Select the ZIP file

  1. Click the Subtide extension icon in your toolbar
  2. Select your operation mode (Tier 1 for basic usage)
  3. Enter your API key and select a model (for Tier 1 & 2)
  4. Choose your target language
  5. Click Save

Tip: API Providers


  1. Go to any YouTube video
  2. Click the translate button in the player controls (bottom right)
  3. Subtitles appear automatically
  1. Navigate to any Shorts video
  2. Click the floating translate button (bottom-right of the video)
  3. Enable translation - videos are pre-translated as you scroll
  4. Subtitles appear instantly when swiping to the next Short