Installation
How to install TrendCast on Chrome, Firefox, Edge, and Brave.
Prerequisites
- Chrome โฅ 114, Firefox โฅ 121, Edge โฅ 114, or Brave โฅ 114
- No API keys or accounts needed โ the extension is 100% client-side
Option 1: From the Chrome Web Store
Pending review โ link will appear here once published.
- Visit the TrendCast listing on the Chrome Web Store.
- Click Add to Chrome.
- Confirm the permission prompt.
- The ๐ TrendCast icon appears in your toolbar.
This also works for Edge and Brave (both are Chromium-based and can install from the Chrome Web Store).
Option 2: From Firefox Add-ons (AMO)
Pending review โ link will appear here once published.
- Visit the TrendCast listing on Firefox Add-ons.
- Click Add to Firefox.
- Confirm the permission prompt.
- The ๐ TrendCast icon appears in your toolbar.
Option 3: From GitHub Releases (manual load)
Chrome / Edge / Brave
- Go to the Releases page.
- Download
trendcast-chrome-vX.Y.Z.zipfrom the latest release. - Unzip the file.
- Open
chrome://extensions(oredge://extensions,brave://extensions). - Enable Developer mode (top-right toggle).
- Click Load unpacked and select the unzipped folder.
- The ๐ TrendCast icon appears in your toolbar.
Firefox
- Go to the Releases page.
- Download
trendcast-firefox-vX.Y.Z.xpi. - Open
about:addons. - Click the gear icon โ Install Add-on From File.
- Select the
.xpifile. - Confirm the installation.
Option 4: Build from source
git clone https://github.com/ozkanpakdil/TrendCast.git
cd TrendCast
bun install
# Build for Chrome
bun run build
# Build for Firefox
bun run build:firefox
The built extension is in dist/. Load it as an unpacked extension (Chrome)
or via about:debugging โ “This Firefox” โ “Load Temporary Add-on”
(Firefox).
First Run
After installation:
- Open a new tab โ the TrendCast dashboard appears (if new tab override is enabled). You’ll see an empty state initially.
- Click “Collect Now” โ in the header or popup to trigger the first data collection cycle.
- Browse social platforms โ visit X, Reddit, or TikTok to see the odds overlay appear.
- Customise settings โ click โ๏ธ Settings to toggle sources, change the collection interval, or switch the correlation engine.
Note: Social signal scraping (X, Reddit, TikTok) uses
your active login session. You need to be logged in to those platforms
for the content scripts to scrape trending posts. News and market data
(BBC, CNN, Polymarket, Kalshi) require no login.