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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →To run a website in Visual Studio Code, open its project folder, then either preview a static HTML file or start the project’s local development server and open its localhost address. Use a server for features that expect HTTP, such as JavaScript modules or fetch(). To debug in a browser, add a .vscode/launch.json configuration and press F5.
1. Open the website folder and find its entry point
- In desktop VS Code, select File > Open Folder and choose the folder containing your site.
- Find the page that should load first. For a simple static site, this is commonly
index.html. Framework projects may instead define their entry point through a development script. - Check that the HTML references files at their actual relative paths. For example,
<link rel="stylesheet" href="css/site.css">expects acssfolder alongside the HTML file.
Open the project folder rather than an individual HTML file when possible. This gives VS Code a consistent workspace for relative paths, the integrated terminal, project configuration, and any .vscode settings.
2. Choose how to preview the site
The right method depends on what the page needs. A browser renders the website; VS Code edits the files and can open or debug the page.
| Method | Best for | HTTP behavior and setup |
|---|---|---|
| Open an HTML file directly | A basic page that uses local HTML, CSS, and JavaScript without server-dependent behavior | Opens as a local file, typically with a file:// URL. No server setup. |
| VS Code integrated browser | Opening a local HTML page or a running localhost site within VS Code | VS Code’s integrated browser supports local .html and .htm files and localhost links; its documentation also covers opening Developer Tools. See Microsoft’s browser documentation. |
| Live Preview extension | Convenient front-end preview in VS Code | The Marketplace listing describes integrated-browser preview and the Live Preview: Show Debug Preview command. It is not a universal substitute for a framework’s own server. See the Live Preview listing. |
| Simple local HTTP server | A static folder that needs HTTP rather than direct file access | Run a server in the integrated terminal, then open its reported localhost URL. Microsoft’s Edge documentation gives npx http-server as an example when Node.js and npm are installed. See Microsoft’s example. |
| Framework development server | React, Vue, Angular, Vite, Next.js, or another app with build tooling or server features | Run the project’s documented script. The command and capabilities depend on the project. |
Preview a static HTML file
For a straightforward page, open index.html in VS Code’s integrated browser or use a suitable preview extension. You can also open the file in a browser outside VS Code. Direct file preview is the simplest option, but it does not reproduce a site being served over HTTP.
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Start a simple HTTP server
If you have Node.js and npm installed and only need to serve a static folder, open View > Terminal and run:
npx http-serverWhen prompted, allow npm to run the package. Read the terminal output for the address and port, then open the displayed http://localhost:<port> URL in the integrated browser or another browser. The port may vary; use the address the server actually reports rather than assuming a particular one.
Run a framework project
For a framework-based site, inspect its README and package.json scripts. From View > Terminal, run the project’s documented development command in the appropriate folder. There is no one command that starts every React, Vue, Angular, Vite, or Next.js project. Once the server prints a localhost URL, open that exact URL in a browser.
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If the app depends on environment variables, a database, an API proxy, or other services, follow the project’s setup instructions too. A running development server does not automatically provide services the project expects but that you have not configured.
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Direct file preview can work for simple pages, but a local HTTP server is safer when the site uses browser features or URL behavior that expects an origin and HTTP requests.
fetch()requests: browser security rules can prevent or change requests made from afile://page.- JavaScript ES modules: module loading may fail when a page is opened directly as a file.
- Client-side routes: routes such as
/aboutmay need server fallback behavior so refreshing a nested URL still serves the app. - Server or proxy routes: a front-end preview alone does not run an API server or configure the framework’s development proxy.
If you see a CORS or module-loading error on a file:// page, try the project’s development server or another local HTTP server. Serving over localhost is a common fix for this class of issue, though it does not resolve every API, proxy, or server configuration problem.
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4. Debug the page in a browser
VS Code includes built-in debugging for Edge and Chrome. You can open a link for debugging, launch a URL from a configuration, or debug a local file. Microsoft’s debugging guide explains the available workflows.
- Start the site’s server if the page needs HTTP.
- In VS Code, open the Command Palette and select Debug: Open Link, or use Run and Debug with a launch configuration.
- Set breakpoints in your JavaScript by clicking beside a line number.
- Use the browser’s Console to inspect runtime errors and the Network panel to check whether scripts, stylesheets, images, or API requests loaded.
When a bundler generates source maps, check that their paths resolve to the source files if breakpoints do not bind where expected. The integrated browser’s Developer Tools can help inspect a page without leaving VS Code. Details on the integrated browser.
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To reuse the same browser-and-URL setup, create .vscode/launch.json in the project folder. Replace the sample URL with the actual address from your server.
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{
"version": "0.2.0",
"configurations": [
{
"type": "msedge",
"request": "launch",
"name": "Launch local site",
"url": "http://localhost:8000"
}
]
}Save the file, start your server, then press F5 or choose the configuration in Run and Debug. If using Chrome, replace msedge with chrome; to use VS Code’s integrated browser, use editor-browser. These configurations and options are described in Microsoft’s browser-debugging documentation.
The sample uses port 8000 only as an example. If your server reports another port, update the URL. The browser launch configuration opens the page; it does not start an arbitrary framework server for you. Start that server separately unless your project has a configured task or other workflow to do so.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.6. If you use VS Code for the Web
VS Code for the Web is useful for editing in a browser, but its official documentation says the browser-based editor does not provide a terminal or debugger. If running, building, or debugging the project requires those capabilities, use desktop VS Code, GitHub Codespaces, or Remote Tunnels as appropriate. Read Microsoft’s VS Code for the Web documentation.
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7. Fix common run and preview problems
| Symptom | Likely cause | What to check or do |
|---|---|---|
| Blank page | Wrong entry page, a failed script, or an incorrect asset path | Confirm you opened the intended HTML file or localhost route. Inspect the browser Console and Network panel for errors. |
| CSS, JavaScript, or images are missing | A path or filename does not match the project files | Check paths relative to the HTML file, directory names, and filename letter case. A path that works on one case-insensitive filesystem may fail elsewhere. |
| CORS or module error from a local file | The page is opened using file://, but its requests or module loading expect HTTP |
Start the project’s development server or a local HTTP server and open its localhost address. |
| Port is already in use | Another process is listening on the server’s chosen port | Stop the old server if you can, or configure the server to use another port. Update launch.json to match the new address. |
| F5 opens the wrong page or fails | The launch URL may use a stale port, or the selected browser debugger may not be available | Compare launch.json with the server’s actual URL and check the browser type in the configuration. |
| Framework route works until refresh | The development server may not be configured to serve the app for nested client-side routes | Use the framework’s development server and consult its routing or server setup instructions. |
| Cannot run the project in vscode.dev | The browser-based editor lacks a terminal and debugger | Move the workflow to desktop VS Code, Codespaces, or Remote Tunnels if it needs runtime or debugging access. |
Or skip the browser setup
If you need a screenshot rather than an interactive local preview, ScreenshotNeo is a website screenshot API and MCP server. Its one-call endpoint captures a URL as an image or PDF; it does not run the website project on your computer or replace local development and debugging.
For example, request a public page with cURL:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpReplace YOUR_API_KEY with your key and change the target URL as needed. See the ScreenshotNeo API documentation for request options and response details.
- Cookie and consent banners are accepted like a visitor, and 60+ known consent platforms, newsletter popups, and chat widgets are removed before capture; each step can be turned off.
- Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits cost nothing; response headers identify the page verdict and whether the request was billed.
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Frequently Asked Questions
Can VS Code itself run a website?
VS Code edits and can preview or debug a site, but the browser renders it. HTTP-dependent sites also need a local server.
Can I use Live Preview instead of a framework development server?
It can provide convenient front-end preview, but it is not a universal replacement for a framework server, API, or proxy configuration.
Does F5 start my development server?
The example launch configuration opens a browser at the configured URL. Start your project’s server separately unless you have configured a workflow to launch it.
Quick Recap
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