Fail rendering if the content contains a string

There is a set of use cases when you want to fail screenshot rendering and retry it if the content of the page contains a string.

For example, if you use residential rotating proxies and a site blocks you with some specific test, you might want to retry the request instead of getting the successful screenshot of the page with the CAPTCHA or an error.

That’s exactly what you need the option fail_if_content_contains for.

Let’s quickly see how it works and how you can use it. Let’s first render the example.com page:

https://api.screenshotone.com/take?access_key=<your access key>&url=https://example.com

The result is:

The example.com website

Now, let’s try to fail it:

https://api.screenshotone.com/take?fail_if_content_contains=Illustrative+Examples+In+Documents&access_key=<your access key>&url=https://example.com

The result is:

{
    "is_successful": false,
    "error_message": "The page content contains the requested string `Prior` by the `fail_if_content_contains` option. If it seems to be a mistake or not what you expected, please, reach out to `support@screenshotone.com` as quickly as possible, and will assist and try to resolve your problem.",
    "error_code": "content_contains_requested_string"
}

As you might notice, the match is case insensitive, it is done for simplicity.