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Comment by jotto | Hacker News Reader

I made a SaaS does this: https://www.prerender.cloud/

  curl https://service.prerender.cloud/screenshot/https://google.com/ > out.jpg

and a chrome extension that doesn't return a screenshot, but:

1. disables JavaScript 2. pre-renders the site (executes the JS) 3. returns HTML

https://chrome.google.com/webstore/detail/prerendercloud-dis...

https://github.com/sanfrancesco/prerendercloud-chromeextensi...

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This is almost exactly what I want. I have two things that I still want thought:

1. (And this is obvious, I know, but...) I want to run your stack on my own gear.

2. I want this to work on my phone, which is, unfortunately an iPhone so browser extensions are blocked by Apple policy. I'd have to create my own browser. Yuck.

As an aside, are you caching public tweets, etc, by any chance?

2 layers of caching:

1. a configurable cache per URL that defaults to 5-minutes (can be disabled or increased up to 1 month)

2. and non-configurable http caching within chrome (cache-control headers), but since the cluster is auto-scaled, this cache naturally purges every few hours.

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