Download the extension as a ZIP, then unzip it before loading in Firefox.

Download table2csv (ZIP)

1. Unzip the downloaded file (you’ll get a folder containing manifest.json and the extension files).
2. Open Firefox and go to about:debugging.
3. Click This Firefox in the left sidebar.
4. Click Load Temporary Add-on.
5. Open the unzipped folder and select manifest.json.

The add-on is temporary and is removed when Firefox restarts. Load it again from the same steps to use it again.

1. Activate — Click the Table to CSV icon in the Firefox toolbar.
2. Select — Hover over a table or leaderboard block; it highlights in green.
3. Convert — Click the highlighted area. A dialog shows the CSV.
4. Copy or download — Use the buttons in the dialog, or close to cancel.

• Standard HTML <table> (thead, tbody, colspan).
• ESPN split tables — fixed column and scrollable stats merged into one CSV.
• *-Reference sites (e.g. Basketball-Reference) — each metric (Games, Points, etc.) is one “table”; click a metric block to export that leaderboard as CSV.

Firefox only (Manifest V2). Permissions: activeTab, clipboardWrite. No data is sent off your device.