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@crawlee/puppeteer

Provides a simple framework for parallel crawling of web pages using headless Chrome with Puppeteer. The URLs to crawl are fed either from a static list of URLs or from a dynamic queue of URLs enabling recursive crawling of websites.

Since PuppeteerCrawler uses headless Chrome to download web pages and extract data, it is useful for crawling of websites that require to execute JavaScript. If the target website doesn't need JavaScript, consider using CheerioCrawler, which downloads the pages using raw HTTP requests and is about 10x faster.

The source URLs are represented using Request objects that are fed from RequestList or RequestQueue instances provided by the PuppeteerCrawlerOptions.requestList or PuppeteerCrawlerOptions.requestQueue constructor options, respectively.

If both PuppeteerCrawlerOptions.requestList and PuppeteerCrawlerOptions.requestQueue are used, the instance first processes URLs from the RequestList and automatically enqueues all of them to RequestQueue before it starts their processing. This ensures that a single URL is not crawled multiple times.

The crawler finishes when there are no more Request objects to crawl.

PuppeteerCrawler opens a new Chrome page (i.e. tab) for each Request object to crawl and then calls the function provided by user as the PuppeteerCrawlerOptions.requestHandler option.

New pages are only opened when there is enough free CPU and memory available, using the functionality provided by the AutoscaledPool class. All AutoscaledPool configuration options can be passed to the PuppeteerCrawlerOptions.autoscaledPoolOptions parameter of the PuppeteerCrawler constructor. For user convenience, the minConcurrency and maxConcurrency AutoscaledPoolOptions are available directly in the PuppeteerCrawler constructor.

Note that the pool of Puppeteer instances is internally managed by the BrowserPool class.

Example usage‚Äč

const crawler = new PuppeteerCrawler({
async requestHandler({ page, request }) {
// This function is called to extract data from a single web page
// 'page' is an instance of Puppeteer.Page with page.goto(request.url) already called
// 'request' is an instance of Request class with information about the page to load
await Dataset.pushData({
title: await page.title(),
url: request.url,
succeeded: true,
})
},
async failedRequestHandler({ request }) {
// This function is called when the crawling of a request failed too many times
await Dataset.pushData({
url: request.url,
succeeded: false,
errors: request.errorMessages,
})
},
});

await crawler.run([
'http://www.example.com/page-1',
'http://www.example.com/page-2',
]);

Index

Crawlers

Functions

Interfaces

Namespaces

References

Type Aliases

References

AutoscaledPool

Re-exports AutoscaledPool

AutoscaledPoolOptions

BASIC_CRAWLER_TIMEOUT_BUFFER_SECS

BasicCrawler

Re-exports BasicCrawler

BasicCrawlerOptions

BasicCrawlingContext

BlockRequestsOptions

BrowserCrawler

Re-exports BrowserCrawler

BrowserCrawlerOptions

BrowserCrawlingContext

BrowserErrorHandler

BrowserHook

Re-exports BrowserHook

BrowserLaunchContext

BrowserRequestHandler

ClientInfo

Re-exports ClientInfo

CompiledScriptFunction

CompiledScriptParams

Configuration

Re-exports Configuration

ConfigurationOptions

Cookie

Re-exports Cookie

CrawlerAddRequestsOptions

CrawlerAddRequestsResult

CrawlingContext

Re-exports CrawlingContext

CreateContextOptions

CreateSession

Re-exports CreateSession

CriticalError

Re-exports CriticalError

Dataset

Re-exports Dataset

DatasetConsumer

Re-exports DatasetConsumer

DatasetContent

Re-exports DatasetContent

DatasetDataOptions

DatasetIteratorOptions

DatasetMapper

Re-exports DatasetMapper

DatasetOptions

Re-exports DatasetOptions

DatasetReducer

Re-exports DatasetReducer

EnqueueLinksByClickingElementsOptions

EnqueueLinksOptions

EnqueueStrategy

Re-exports EnqueueStrategy

ErrorHandler

Re-exports ErrorHandler

EventManager

Re-exports EventManager

EventType

Re-exports EventType

EventTypeName

Re-exports EventTypeName

ExportOptions

Re-exports ExportOptions

FinalStatistics

Re-exports FinalStatistics

GlobInput

Re-exports GlobInput

GlobObject

Re-exports GlobObject

IStorage

Re-exports IStorage

InfiniteScrollOptions

InjectFileOptions

InterceptHandler

Re-exports InterceptHandler

KeyConsumer

Re-exports KeyConsumer

KeyValueStore

Re-exports KeyValueStore

KeyValueStoreIteratorOptions

KeyValueStoreOptions

LocalEventManager

Log

Re-exports Log

LogLevel

Re-exports LogLevel

Logger

Re-exports Logger

LoggerJson

Re-exports LoggerJson

LoggerOptions

Re-exports LoggerOptions

LoggerText

Re-exports LoggerText

NonRetryableError

ProxyConfiguration

ProxyConfigurationFunction

ProxyConfigurationOptions

ProxyInfo

Re-exports ProxyInfo

PseudoUrl

Re-exports PseudoUrl

PseudoUrlInput

Re-exports PseudoUrlInput

PseudoUrlObject

Re-exports PseudoUrlObject

PuppeteerDirectNavigationOptions

Renames and re-exports DirectNavigationOptions

PushErrorMessageOptions

QueueOperationInfo

QueueOperationInfoOptions

RecordOptions

Re-exports RecordOptions

RegExpInput

Re-exports RegExpInput

RegExpObject

Re-exports RegExpObject

Request

Re-exports Request

RequestHandler

Re-exports RequestHandler

RequestList

Re-exports RequestList

RequestListOptions

RequestListSourcesFunction

RequestListState

Re-exports RequestListState

RequestOptions

Re-exports RequestOptions

RequestQueue

Re-exports RequestQueue

RequestQueueOperationOptions

RequestQueueOptions

RequestState

Re-exports RequestState

RequestTransform

Re-exports RequestTransform

RetryRequestError

Router

Re-exports Router

RouterHandler

Re-exports RouterHandler

SaveSnapshotOptions

Session

Re-exports Session

SessionOptions

Re-exports SessionOptions

SessionPool

Re-exports SessionPool

SessionPoolOptions

SessionState

Re-exports SessionState

Snapshotter

Re-exports Snapshotter

SnapshotterOptions

Source

Re-exports Source

StatisticPersistedState

StatisticState

Re-exports StatisticState

Statistics

Re-exports Statistics

StorageClient

Re-exports StorageClient

StorageManagerOptions

SystemInfo

Re-exports SystemInfo

SystemStatus

Re-exports SystemStatus

SystemStatusOptions

UrlPatternObject

Re-exports UrlPatternObject

UseStateOptions

Re-exports UseStateOptions

createBasicRouter

enqueueLinks

Re-exports enqueueLinks

filterRequestsByPatterns

log

Re-exports log

purgeDefaultStorages

useState

Re-exports useState

Type Aliases

PuppeteerGoToOptions

PuppeteerGoToOptions: Parameters<Page[goto]>[1]