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Headless Chrome supports web components but shadow DOM is difficult to serialize effectively.Īs such, shady DOM (a lightweight shim for Shadow DOM) Your application is rendered well before the budget expires. Ensure you don't hit this budget by ensuring

There is a hard limit of 10 seconds for rendering. The service attempts to detect when a page has loaded by looking at the page load event, ensuring thereĪre no outstanding network requests and that the page has had ample time to render. Rendertron is also compatible with prerender.io middleware. Python (Django) middleware and decorator (Community maintained).ASP.net core middleware (Community maintained).Firebase functions (Community maintained).This is a list of middleware available to use with the Rendertron service: This checks the user agent to determine whether prerendering is required. Once you have the service up and running, you'll need to implement the differential serving You can use it, but there are no uptime guarantees. Rendertron is compatible with all client side technologies, including web components.Ī demo Rendertron service is available at. To use Rendertron, your applicationĬonfigures middleware to determine whether to proxy a request to Rendertron. Rendertron renders requested pages using Headless Chrome,Īuto-detecting when your PWA has completed loadingĪnd serializes the response back to the original request. Rendertron is designed to enable your Progressive Web App (PWA) to serve the correctĬontent to any bot that doesn't render or execute JavaScript. 🔨 Built with Puppeteer ☁️ Easy deployment to Google Cloud 🔍 Improves SEO Rendertron is a headless Chrome rendering solution designed to render & serialise web pages on the fly.