Node Prerenderer
Node Prerenderer is a web server that render javascript in a browser, save the rendered html and return the result
You may want to use this for serving full rendered pages to search engines and crawlers (which most of the cases don't process javascript)
How to use this
Pull the docker image (you can also build and host your own)
docker pull tiziofittizio/node-prerenderer:1.0.0
An example on how this can be executed:
docker run -d tiziofittizio/node-prerenderer:1.0.0
Without a specified port, this will listen on port 7777, see Environment variables to change it
Now you can ask the prerenderer to return web pages with an HTTP get request:
GET <Container address and port>/render?url=https://github.com/TizioFittizio/node-prerenderer
Note that at first, this will require some seconds, following requestes with the same url will be returned almost immediatly (due to cache)
Environment variables
You can specify the following environment variables when running the container:
| Key | Default | Behaviour |
|---|---|---|
| CACHE_FILE_PATH | ./cache | This is the path where the cache rendering will be saved, if you want this to be accessible you can mount a docker volume to the same path |
| PORT | 7777 | Port the server will be listen to |
| CACHE_RENEW_AFTER_MILLIS | 1000 * 60 * 10 (10 minutes) | Expiry time of a rendering in cache in milliseconds |