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linkedin-jobs-scraperTypeScript icon, indicating that this package has built-in type declarations

5.5.0 • Public • Published

linkedin-jobs-scraper

Scrape public available jobs on Linkedin using headless browser. For each job, the following fields are extracted: jobId, title, [company], place, date, link, [applyLink], description, descriptionHTML, senorityLevel, jobFunction, employmentType, industries.

It's also available an equivalent package in python.

Table of Contents

Installation

Install package:

npm install --save linkedin-jobs-scraper

Usage

const { 
    LinkedinScraper,
    relevanceFilter,
    timeFilter,
    typeFilter,
    experienceLevelFilter,
    events,
} = require("linkedin-jobs-scraper");

(async () => {
    // Each scraper instance is associated with one browser.
    // Concurrent queries will run on different pages within the same browser instance.
    const scraper = new LinkedinScraper({
        headless: true,
        slowMo: 50,
        args: [
            "--lang=en-GB",
        ],
    });

    // Add listeners for scraper events
    scraper.on(events.scraper.data, (data) => {
        console.log(
            data.description.length,
            data.descriptionHTML.length,
            `Query='${data.query}'`,
            `Location='${data.location}'`,
            `Id='${data.jobId}'`,
            `Title='${data.title}'`,
            `Company='${data.company ? data.company : "N/A"}'`,
            `Place='${data.place}'`,
            `Date='${data.date}'`,
            `Link='${data.link}'`,
            `applyLink='${data.applyLink ? data.applyLink : "N/A"}'`,
            `senorityLevel='${data.senorityLevel}'`,
            `function='${data.jobFunction}'`,
            `employmentType='${data.employmentType}'`,
            `industries='${data.industries}'`,
        );
    });

    scraper.on(events.scraper.error, (err) => {
        console.error(err);
    });

    scraper.on(events.scraper.end, () => {
        console.log('All done!');
    });

    // Add listeners for puppeteer browser events
    scraper.on(events.puppeteer.browser.targetcreated, () => {
    });
    scraper.on(events.puppeteer.browser.targetchanged, () => {
    });
    scraper.on(events.puppeteer.browser.targetdestroyed, () => {
    });
    scraper.on(events.puppeteer.browser.disconnected, () => {
    });

    // Custom function executed on browser side to extract job description
    const descriptionFn = () => document.querySelector(".description__text")
        .innerText
        .replace(/[\s\n\r]+/g, " ")
        .trim();

    // Run queries concurrently    
    await Promise.all([        
        scraper.run({
            query: "Graphic Designer",
            options: {
                locations: ["London"],
                descriptionFn: descriptionFn,
                filters: {                    
                    relevance: relevanceFilter.RELEVANT,
                    time: timeFilter.MONTH,                                      
                }
            }
        }),
    
        // Run queries serially
        scraper.run([
            {
                query: "Engineer",
                options: {
                    locations: ["United States"], // This will be merged with the global options => ["United States", "Europe"]
                    filters: {
                        type: [typeFilter.FULL_TIME, typeFilter.CONTRACT]    
                    },       
                }                                                       
            },
            {
                query: "Sales",
                options: {                    
                    limit: 10, // This will override global option limit (33)
                }
            },
        ], { // Global options for this run, will be merged individually with each query options (if any)
            locations: ["Europe"],
            optimize: true,
            limit: 33,
        }),
    ]);

    // Close browser
    await scraper.close();
})();

LinkedinScraper

Each LinkedinScraper instance is associated with one browser (Chromium) instance. Concurrent runs will be executed on different pages within the same browser. Package uses puppeteer under the hood to instantiate Chromium browser instances; the same browser options and events are supported. For more informations about browser options see: puppeteer-browser-options. For more information about browser events see: puppeteer-browser-events. The main method is run which takes the following parameters:

  • queries {IQuery | IQuery[]} required.
  • [options] {IQueryOptions} optional:
    • [limit] {Number} Number of jobs to retrieve per query-location.
    • [descriptionFn] {Function} Function executed on browser side (you have access to window, document, etc) to extract job description.
    • [filters] {Object} Filter options (see section Filters for more details).
    • [optimize] {Boolean} Block resources such as images, stylesheets etc to improve bandwidth usage. Specifically the following resources are blocked:
      • image
      • stylesheet
      • media
      • font
      • texttrack
      • object
      • beacon
      • csp_report
      • imageset
/**
 * Main class
 * @extends EventEmitter
 * @param options {LaunchOptions} Puppeteer launch options, for more informations see https://pptr.dev/#?product=Puppeteer&version=v2.0.0&show=api-puppeteerlaunchoptions
 * @constructor
 */
constructor(options: LaunchOptions) { }

/**
 * Scrape linkedin jobs
 * @param {IQuery | IQuery[]} queries
 * @param {IQueryOptions} [options]
 * @return {Promise<void>}
 */
async run (
    queries: IQuery | IQuery[],
    options?: IQueryOptions
) { }

/**
* Close browser instance
* @returns {Promise<void>}
*/
async close() { }

/**
 * Enable logger
 * @returns void
 * @static
 */
enableLogger() { }

/**
 * Disable logger
 * @returns void
 * @static
 */
disableLogger() { }

/**
 * Enable logger debug namespace
 * @returns void
 * @static
 */
enableLoggerDebug() { }


/**
 * Enable logger info namespace
 * @returns void
 * @static
 */
enableLoggerInfo() { }

/**
 * Enable logger warn namespace
 * @returns void
 * @static
 */
enableLoggerWarn() { }


/**
 * Enable logger error namespace
 * @returns void
 * @static
 */
enableLoggerError() { } 

Anonymous vs authenticated session

By default the scraper will run in anonymous mode (no authentication required). In some environments (e.g. AWS or Heroku) this may be not possible though. You may face the following error message:

scraper:error [][] Scraper failed to run in anonymous mode, authentication may be necessary for this environment. Please check the documentation on how to use an authenticated session.

In that case the only option available is to run using an authenticated session. These are the steps required:

  1. Login to LinkedIn using an account of your choice.
  2. Open Chrome developer tools:

  1. Go to tab Application, then from left panel select Storage -> Cookies -> https://www.linkedin.com. In the main view locate row with name li_at and copy content from the column Value.

  1. Set the environment variable LI_AT_COOKIE with the value obtained in step 3, then run your application as normal. Example:
LI_AT_COOKIE=<your li_at cookie value here> node app.js

Rate limiting

You may experience the following rate limiting warning during execution: 429 too many requests. This means you are exceeding the number of requests per second allowed by the server (this is especially true when using authenticated sessions where the rate limits are much more strict). You can overcome this by:

  • trying a higher slowMo value for the scraper options (this will slow down the browser); as a rule of thumb you can add 100 ms for each concurrent query (e.g. 100 for 1 query, 200 for 2 concurrent queries, 300 for 3 concurrent queries and so on);
  • reducing the number of concurrent queries (make them to run in serial instead).

Example:

const scraper = new LinkedinScraper({
    headless: true,
    slowMo: 200,
    args: [
        "--lang=en-GB",
    ],
});

// Two concurrent queries
await Promise.all([
    scraper.run([...]),
    scraper.run([...]),
]);

Filters

It is possible to customize queries with the following filters:

  • RELEVANCE:
    • RELEVANT
    • RECENT
  • TIME:
    • DAY
    • WEEK
    • MONTH
    • ANY
  • TYPE:
    • FULL_TIME
    • PART_TIME
    • TEMPORARY
    • CONTRACT
  • EXPERIENCE LEVEL:
    • INTERNSHIP
    • ENTRY_LEVEL
    • ASSOCIATE
    • MID_SENIOR
    • DIRECTOR

See the following example for more details:

const { 
    LinkedinScraper,
    relevanceFilter,
    timeFilter,
    typeFilter,
    experienceLevelFilter,
    events,
} = require("linkedin-jobs-scraper");

(async () => {
    // [...]
    
    await scraper.run({
            query: "",
            options: {
                filters: {                    
                    relevance: relevanceFilter.RELEVANT,
                    time: timeFilter.MONTH,
                    type: [typeFilter.FULL_TIME, typeFilter.CONTRACT], // string or array
                    experience: [experienceLevelFilter.ENTRY_LEVEL, experienceLevelFilter.MID_SENIOR], // string or array
                }
            }
        }, {
            optimize: true,
            locations: ["United States"],
            limit: 10,
        });

    // [...]
})();

Company Filter

It is also possible to filter by company using the public company jobs url on LinkedIn. To find this url you have to:

  1. Login to LinkedIn using an account of your choice.
  2. Go to the LinkedIn page of the company you are interested in (e.g. https://www.linkedin.com/company/google).
  3. Click on jobs from the left menu.

  1. Scroll down and locate See all jobs or See jobs button.

  1. Right click and copy link address (or navigate the link and copy it from the address bar).
  2. Paste the link address in code as follows:
// [...]

await scraper.run({
    query: "",
    options: {
        filters: {        
            // Copy link address here    
            companyJobsUrl: "https://www.linkedin.com/jobs/search/?f_C=1441%2C17876832%2C791962%2C2374003%2C18950635%2C16140%2C10440912&geoId=92000000&lipi=urn%3Ali%3Apage%3Acompanies_company_jobs_jobs%3BcbFm1gYoRwy%2FxVRQWbGyKw%3D%3D&licu=urn%3Ali%3Acontrol%3Ad_flagship3_company-see_all_jobs",            
        }
    }
});

// [...]

Logger

Logger uses debug package under the hood. The following namespace are used:

  • scraper:debug
  • scraper:info
  • scraper:warn
  • scraper:error

Use environment variable DEBUG or the programmatic API to selectively enable/disable one or more namespace. Example:

DEBUG=scraper:info node app.js

License

MIT License

Install

npm i linkedin-jobs-scraper

DownloadsWeekly Downloads

114

Version

5.5.0

License

ISC

Unpacked Size

2.56 MB

Total Files

73

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