Yahoo Finance CSV

Yahoo Finance CSV Download historical OHLCV data from Yahoo Finance as CSV Chrome extension that exports historical price data (Open, High, Low, Close, Volume, and optionally Adj Close) from Yahoo Finance symbol history pages as a CSV file. Features: One-click CSV export on a Yahoo Finance history page using "Check compatibility" then "Download CSV". Output columns are Date, Open, High, Low, Close, Volume; Adj Close is included when available. Enter a ticker (e.g. NVDA) in the popup to open that symbol's history page. UI language can be switched between English and Korean. How to use: Install the extension, then open a Yahoo Finance history page (e.g. finance.yahoo.com/quote/NVDA/history). Click the extension icon, run "Check compatibility", then click "Download CSV" to save a file such as NVDA-history.csv. Or type a ticker in the popup and click "Go to history page", then run Check and Download as above. Requirements: Chrome (or a Chromium-based browser) with Manifest V3 support. If Yahoo Finance changes the page layout, "Check compatibility" may fail until the extension is updated. Permissions: activeTab (current tab), storage (language preference), scripting (content script), and host access to finance.yahoo.com for the history pages.