Vanilla JS Scraper

A static list of URLs to scrape.

For details, see the Start URLs section in the README.

Specifies what kind of URLs found by the Link selector should be added to the request queue. A pseudo-URL is a URL with regular expressions enclosed in [] brackets, e.g. http://www.example.com/[.*].

If Pseudo-URLs are omitted, the actor enqueues all links matched by the Link selector.

For details, see Pseudo-URLs in README.

A CSS selector stating which links on the page (<a> elements with href attribute) shall be followed and added to the request queue. To filter the links added to the queue, use the Pseudo-URLs field.

If the Link selector is empty, the page links are ignored.

For details, see the Link selector in README.

A JavaScript function that is executed for every page loaded server-side in Node.js 12. Use it to scrape data from the page, perform actions or add new URLs to the request queue.

For details, see Page function in README.

Async functions that are sequentially evaluated before the navigation. Good for setting additional cookies or browser properties before navigation. The function accepts two parameters, crawlingContext and requestAsBrowserOptions, which are passed to the requestAsBrowser() function the crawler calls to navigate.

Async functions that are sequentially evaluated after the navigation. Good for checking if the navigation was successful. The function accepts crawlingContext as the only parameter.

Specifies proxy servers that will be used by the scraper in order to hide its origin.

For details, see Proxy configuration in README.

Include debug messages in the log?

Specifies the maximum number of pages that can be processed by the scraper in parallel. The scraper automatically increases and decreases concurrency based on available system resources. This option enables you to set an upper limit, for example to reduce the load on a target web server.

The maximum number of times the scraper will retry to load each web page on error, in case of a page load error or an exception thrown by the Page function.

If set to 0, the page will be considered failed right after the first error.

The maximum amount of time the scraper will wait for a web page to load, in seconds. If the web page does not load in this timeframe, it is considered to have failed and will be retried (subject to Max page retries), similarly as with other page load errors.

The maximum amount of time the scraper will wait for the Page function to execute, in seconds. It is always a good idea to set this limit, to ensure that unexpected behavior in page function will not get the scraper stuck.

If enabled, the scraper will ignore SSL/TLS certificate errors. Use at your own risk.

A JSON array specifying additional MIME content types of web pages to support. By default, Cheerio Scraper supports the text/html and application/xhtml+xml content types, and skips all other resources. For details, see Content types in README.

Name or ID of the dataset that will be used for storing results. If left empty, the default dataset of the run will be used.

Name or ID of the key-value store that will be used for storing records. If left empty, the default key-value store of the run will be used.

A custom JSON object that is passed to the Page function as context.customData. This setting is useful when invoking the scraper via API, in order to pass some arbitrary parameters to your code.