FAQ

What is your crawler's user agent?

We constantly upgrade our Chrome versions so these can change any time. If you want to search for our user agent in your logs, you should search for Prerender and not for any other parts of the string. The current ones are:

Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/84.0.4147.89 Safari/537.36 Prerender (+https://github.com/prerender/prerender)
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/71.0.3578.98 Safari/537.36 Prerender (+https://github.com/prerender/prerender)

How do I upgrade/downgrade my plan?

You are automatically upgraded/downgraded based on your number of cached pages and your cache freshness value. You can change your cache freshness value at any time.

Can I limit the number of cached pages for my site?

No, but we will never charge you for cached pages that are added unexpectedly. We want to be completely fair and we're not trying to take advantage of you, but limiting the number of cached pages is a hard problem. If we did allow limiting the number of cached pages and you hit your limit, we wouldn't want to send 404s since that's bad for SEO. We also can't render pages on the fly instead of caching them because rendering pages on the fly is where the most cost is (serving cached pages keeps costs down). The best way to limit the number of cached pages is by blacklisting or whitelisting at the middleware level.

How do I delete a lot of pages at once?

For now, send us an email at support@prerender.io and we can delete all of your cached pages or delete certain ones based on a regex. We will be adding this feature to our site once we make sure the performance is acceptable for deleting lots of pages, but for now it's easiest if we do it for you. Feel free to ask as many times as you need! We don't mind.

Can you help me set up with Prerender.io?

Absolutely! We love to help out. Send us an email at support@prerender.io and we will be more than happy to help in any way that we can.

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