base on Elegant Scraper and Crawler Framework for Golang # Colly Lightning Fast and Elegant Scraping Framework for Gophers Colly provides a clean interface to write any kind of crawler/scraper/spider. With Colly you can easily extract structured data from websites, which can be used for a wide range of applications, like data mining, data processing or archiving. [](https://pkg.go.dev/github.com/gocolly/colly/v2) [](#backers) [](#sponsors) [](https://github.com/gocolly/colly/actions/workflows/ci.yml) [](http://goreportcard.com/report/gocolly/colly) [](https://github.com/gocolly/colly/tree/master/_examples) [](https://codecov.io/github/gocolly/colly?branch=master) [](https://app.fossa.io/projects/git%2Bgithub.com%2Fgocolly%2Fcolly?ref=badge_shield) [](https://twitter.com/gocolly) ## Features - Clean API - Fast (>1k request/sec on a single core) - Manages request delays and maximum concurrency per domain - Automatic cookie and session handling - Sync/async/parallel scraping - Caching - Automatic encoding of non-unicode responses - Robots.txt support - Distributed scraping - Configuration via environment variables - Extensions ## Example ```go import ( "fmt" "github.com/gocolly/colly/v2" ) func main() { c := colly.NewCollector() // Find and visit all links c.OnHTML("a[href]", func(e *colly.HTMLElement) { e.Request.Visit(e.Attr("href")) }) c.OnRequest(func(r *colly.Request) { fmt.Println("Visiting", r.URL) }) c.Visit("http://go-colly.org/") } ``` See [examples folder](https://github.com/gocolly/colly/tree/master/_examples) for more detailed examples. ## Installation `go get github.com/gocolly/colly/v2` ## Bugs Bugs or suggestions? Visit the [issue tracker](https://github.com/gocolly/colly/issues) or join `#colly` on freenode ## Other Projects Using Colly Below is a list of public, open source projects that use Colly: - [greenpeace/check-my-pages](https://github.com/greenpeace/check-my-pages) Scraping script to test the Spanish Greenpeace web archive. - [altsab/gowap](https://github.com/altsab/gowap) Wappalyzer implementation in Go. - [jesuiscamille/goquotes](https://github.com/jesuiscamille/goquotes) A quotes scraper, making your day a little better! - [jivesearch/jivesearch](https://github.com/jivesearch/jivesearch) A search engine that doesn't track you. - [Leagify/colly-draft-prospects](https://github.com/Leagify/colly-draft-prospects) A scraper for future NFL Draft prospects. - [lucasepe/go-ps4](https://github.com/lucasepe/go-ps4) Search playstation store for your favorite PS4 games using the command line. - [yringler/inside-chassidus-scraper](https://github.com/yringler/inside-chassidus-scraper) Scrapes Rabbi Paltiel's web site for lesson metadata. - [gamedb/gamedb](https://github.com/gamedb/gamedb) A database of Steam games. - [lawzava/scrape](https://github.com/lawzava/scrape) CLI for email scraping from any website. - [eureka101v/WeiboSpiderGo](https://github.com/eureka101v/WeiboSpiderGo) A sina weibo(chinese twitter) scraper - [Go-phie/gophie](https://github.com/Go-phie/gophie) Search, Download and Stream movies from your terminal - [imthaghost/goclone](https://github.com/imthaghost/goclone) Clone websites to your computer within seconds. - [superiss/spidy](https://github.com/superiss/spidy) Crawl the web and collect expired domains. - [docker-slim/docker-slim](https://github.com/docker-slim/docker-slim) Optimize your Docker containers to make them smaller and better. - [seversky/gachifinder](https://github.com/seversky/gachifinder) an agent for asynchronous scraping, parsing and writing to some storages(elasticsearch for now) - [eval-exec/goodreads](https://github.com/eval-exec/goodreads) crawl all tags and all pages of quotes from goodreads. If you are using Colly in a project please send a pull request to add it to the list. ## Contributors This project exists thanks to all the people who contribute. [[Contribute]](CONTRIBUTING.md). <a href="https://github.com/gocolly/colly/graphs/contributors"><img src="https://opencollective.com/colly/contributors.svg?width=890" /></a> ## Backers Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/colly#backer)] <a href="https://opencollective.com/colly#backers" target="_blank"><img src="https://opencollective.com/colly/backers.svg?width=890"></a> ## Sponsors Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/colly#sponsor)] <a href="https://opencollective.com/colly/sponsor/0/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/0/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/1/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/1/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/2/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/2/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/3/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/3/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/4/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/4/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/5/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/5/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/6/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/6/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/7/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/7/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/8/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/8/avatar.svg"></a> <a href="https://opencollective.com/colly/sponsor/9/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/9/avatar.svg"></a> ## License [](https://app.fossa.io/projects/git%2Bgithub.com%2Fgocolly%2Fcolly?ref=badge_large) ", Assign "at most 3 tags" to the expected json: {"id":"4903","tags":[]} "only from the tags list I provide: [{"id":77,"name":"3d"},{"id":89,"name":"agent"},{"id":17,"name":"ai"},{"id":54,"name":"algorithm"},{"id":24,"name":"api"},{"id":44,"name":"authentication"},{"id":3,"name":"aws"},{"id":27,"name":"backend"},{"id":60,"name":"benchmark"},{"id":72,"name":"best-practices"},{"id":39,"name":"bitcoin"},{"id":37,"name":"blockchain"},{"id":1,"name":"blog"},{"id":45,"name":"bundler"},{"id":58,"name":"cache"},{"id":21,"name":"chat"},{"id":49,"name":"cicd"},{"id":4,"name":"cli"},{"id":64,"name":"cloud-native"},{"id":48,"name":"cms"},{"id":61,"name":"compiler"},{"id":68,"name":"containerization"},{"id":92,"name":"crm"},{"id":34,"name":"data"},{"id":47,"name":"database"},{"id":8,"name":"declarative-gui "},{"id":9,"name":"deploy-tool"},{"id":53,"name":"desktop-app"},{"id":6,"name":"dev-exp-lib"},{"id":59,"name":"dev-tool"},{"id":13,"name":"ecommerce"},{"id":26,"name":"editor"},{"id":66,"name":"emulator"},{"id":62,"name":"filesystem"},{"id":80,"name":"finance"},{"id":15,"name":"firmware"},{"id":73,"name":"for-fun"},{"id":2,"name":"framework"},{"id":11,"name":"frontend"},{"id":22,"name":"game"},{"id":81,"name":"game-engine "},{"id":23,"name":"graphql"},{"id":84,"name":"gui"},{"id":91,"name":"http"},{"id":5,"name":"http-client"},{"id":51,"name":"iac"},{"id":30,"name":"ide"},{"id":78,"name":"iot"},{"id":40,"name":"json"},{"id":83,"name":"julian"},{"id":38,"name":"k8s"},{"id":31,"name":"language"},{"id":10,"name":"learning-resource"},{"id":33,"name":"lib"},{"id":41,"name":"linter"},{"id":28,"name":"lms"},{"id":16,"name":"logging"},{"id":76,"name":"low-code"},{"id":90,"name":"message-queue"},{"id":42,"name":"mobile-app"},{"id":18,"name":"monitoring"},{"id":36,"name":"networking"},{"id":7,"name":"node-version"},{"id":55,"name":"nosql"},{"id":57,"name":"observability"},{"id":46,"name":"orm"},{"id":52,"name":"os"},{"id":14,"name":"parser"},{"id":74,"name":"react"},{"id":82,"name":"real-time"},{"id":56,"name":"robot"},{"id":65,"name":"runtime"},{"id":32,"name":"sdk"},{"id":71,"name":"search"},{"id":63,"name":"secrets"},{"id":25,"name":"security"},{"id":85,"name":"server"},{"id":86,"name":"serverless"},{"id":70,"name":"storage"},{"id":75,"name":"system-design"},{"id":79,"name":"terminal"},{"id":29,"name":"testing"},{"id":12,"name":"ui"},{"id":50,"name":"ux"},{"id":88,"name":"video"},{"id":20,"name":"web-app"},{"id":35,"name":"web-server"},{"id":43,"name":"webassembly"},{"id":69,"name":"workflow"},{"id":87,"name":"yaml"}]" returns me the "expected json"