# Cross-Origin hosting ## Overview By default, the library expects its static files to be hosted on the same origin (domain) as the page that contains the chart. If you host library files on a different origin, follow the configuration steps below. :::info The TradingView [demo storage server] (`https://saveload.tradingview.com`) accepts requests only from `localhost` and `tradingview.com` origins. It does not support cross-origin setups for other domains. For production, implement your own storage backend. For details, see [Saving and loading charts]. ::: ## 1. Load the standalone script Add the script tag within the `` of the page. ```html ``` ## 2. Configure the widget constructor When creating the widget, set [`library_path`] to the **absolute URL** of the folder that contains the library static files. Note the following: - The URL must start with `http://` or `https://`. - The URL must end with a trailing forward slash `/`. Example: ```javascript const widget = new TradingView.widget({ // highlight-next-line library_path: 'https://example.com/charting_library/', symbol: 'AAPL', interval: '1D', container: 'tv_chart_container', datafeed: new Datafeeds.UDFCompatibleDatafeed("https://demo-feed-data.tradingview.com"), }); ``` ## 3. Configure CORS Because the library fetches resources from the [`library_path`], your remote server must allow Cross-Origin Resource Sharing (CORS). Make sure that the server hosting the library files is configured to allow Cross-Origin requests from the origin of the page containing the chart element. Otherwise, the browser may block internal library resources, causing a blank chart or console errors. For guidance, see [Access-Control-Allow-Origin header]. [Access-Control-Allow-Origin header]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Origin [demo storage server]: https://charting-library-docs.xstaging.tv/latest/saving_loading/save-load-rest-api.md#use-demo-storage [`library_path`]: https://charting-library-docs.xstaging.tv/latest/api/interfaces/Charting_Library.ChartingLibraryWidgetOptions#library_path [Saving and loading charts]: https://charting-library-docs.xstaging.tv/latest/saving_loading.md --- ## Sitemap - [All documentation pages](https://charting-library-docs.xstaging.tv/llms.txt) - [Full page map with headings](https://charting-library-docs.xstaging.tv/docs_map.md)