🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 164 (from laksa198)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa164.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.khanacademy.org/computing\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.khanacademy.org/computing\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.khanacademy.org\/computing","crawl_time":1775606471,"first_indexed_time":1417070755,"http_code":200,"src_unparsed":"org,khanacademy!www,\/computing s443","src_root_hash":"3750796715567959364","history_drop_reason":null,"meta_title":"Computing | Khan Academy","meta_descriptions":["Learn how to code computer programs, how to design algorithms that make computers more efficient, and discover what a career in computing could look like."],"attrs_boilerpipe_text":"If you're seeing this message, it means we're having trouble loading external resources on our website.\nIf you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.\nSelect a category to view its courses\nWelcome to Khan Academy!\nSo we can give you the right tools, let us know if you're a...\nIntro to computer science - Python\nUse programming as a tool to design recommendation engines, model infectious diseases, create game levels, and more! Start with the Python fundamentals like variables, conditionals, loops, and functions, as you build a portfolio of projects that showcase some of the exciting ways you can apply programming to real world problems.\nComputer programming - JavaScript and the web\nLearn how to program drawings, animations, and games using JavaScript and the Processing library, and explore the technologies behind the web as you design webpages with HTML and CSS.\nAP®︎\/College Computer Science Principles\nLearn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer components, internet protocols, programming skills, algorithms, and data analysis.\nComputers and the Internet\nHow do computers store data? Hoes does the Internet connects billions of devices worldwide? How do we protect data from cyber threats? Start from the foundation of how computers work at the electrical level to how computing innovations like the Internet, encryption, and sensors work.\nComputer science theory\nExplore advanced computer science topics from algorithms (how we solve common computing problems and measure our solutions' efficiency), to cryptography (how we protect secret information), to information theory (how we encode and compress information). Ideal for learners with some programming background.\nCode.org\nLaunched in 2013, Code.org is a non-profit dedicated to expanding access to computer science, and increasing participation by women and underrepresented students of color. Our vision is that every student in every school should have the opportunity to learn computer science.\nHour of Code\nOnly have an hour? Learn the basics of programming, making webpages, or creating databases.","attrs_markdown":"[Skip to main content](https:\/\/www.khanacademy.org\/computing#main-content)\n\nIf you're seeing this message, it means we're having trouble loading external resources on our website.\n\nIf you're behind a web filter, please make sure that the domains \\*.kastatic.org and \\*.kasandbox.org are unblocked.\n\nExplore\n\nSelect a category to view its courses\n\nSearch\n\nDonate\n\n[Log in](https:\/\/www.khanacademy.org\/login?continue=%2Fcomputing)[Sign up](https:\/\/www.khanacademy.org\/signup?continue=%2Fcomputing)\n\n[Search for courses, skills, and videos](https:\/\/www.khanacademy.org\/search)\n\n## Welcome to Khan Academy\\!\nSo we can give you the right tools, let us know if you're a...\n\nLearner\n\nTeacher\n\nParent\n\n# Computing\n# Computing\n\n#### [Intro to computer science - Python](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals)\nUse programming as a tool to design recommendation engines, model infectious diseases, create game levels, and more! Start with the Python fundamentals like variables, conditionals, loops, and functions, as you build a portfolio of projects that showcase some of the exciting ways you can apply programming to real world problems.\n\n[Computational thinking with variables](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals\/x5279a44ae0ab15d6:computational-thinking-with-variables)\n\n[Designing algorithms with conditionals](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals\/x5279a44ae0ab15d6:designing-algorithms-with-conditionals)\n\n[Simulating phenomena with loops](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals\/x5279a44ae0ab15d6:simulating-phenomena-with-loops)\n\n[Playing games with functions](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals\/x5279a44ae0ab15d6:playing-games-with-functions)\n\n[Automating tasks with lists](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals\/x5279a44ae0ab15d6:automating-tasks-with-lists)\n\n[Analyzing data with dictionaries](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals\/x5279a44ae0ab15d6:analyzing-data-with-dictionaries)\n\n[Building software with classes](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals\/x5279a44ae0ab15d6:building-software-with-classes)\n\n[Teacher resources](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals\/x5279a44ae0ab15d6:teacher-resources)\n\n#### [Computer programming - JavaScript and the web](https:\/\/www.khanacademy.org\/computing\/computer-programming)\nLearn how to program drawings, animations, and games using JavaScript and the Processing library, and explore the technologies behind the web as you design webpages with HTML and CSS.\n\n[Intro to JS: Drawing & Animation](https:\/\/www.khanacademy.org\/computing\/computer-programming\/programming)\n\n[Intro to HTML\/CSS: Making webpages](https:\/\/www.khanacademy.org\/computing\/computer-programming\/html-css)\n\n[Intro to SQL: Querying and managing data](https:\/\/www.khanacademy.org\/computing\/computer-programming\/sql)\n\n[Advanced JS: Games & Visualizations](https:\/\/www.khanacademy.org\/computing\/computer-programming\/programming-games-visualizations)\n\n[Advanced JS: Natural Simulations](https:\/\/www.khanacademy.org\/computing\/computer-programming\/programming-natural-simulations)\n\n[HTML\/JS: Making webpages interactive](https:\/\/www.khanacademy.org\/computing\/computer-programming\/html-css-js)\n\n[HTML\/JS: Making webpages interactive with jQuery](https:\/\/www.khanacademy.org\/computing\/computer-programming\/html-js-jquery)\n\n[Meet the professional](https:\/\/www.khanacademy.org\/computing\/computer-programming\/meet-the-computing-professional-unit)\n\n#### [AP®︎\/College Computer Science Principles](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles)\nLearn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer components, internet protocols, programming skills, algorithms, and data analysis.\n\n[Digital information](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/x2d2f703b37b450a3:digital-information)\n\n[The Internet](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/the-internet)\n\n[Programming](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/programming-101)\n\n[Algorithms](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/algorithms-101)\n\n[Data analysis](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/data-analysis-101)\n\n[Simulations](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/x2d2f703b37b450a3:simulations)\n\n[Online data security](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/x2d2f703b37b450a3:online-data-security)\n\n[Computing innovations](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/x2d2f703b37b450a3:computing-innovations)\n\n[Exam preparation](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/ap-csp-exam-preparation)\n\n[AP®︎ CSP standards mappings](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles\/standards-mappings)\n\n#### [Computers and the Internet](https:\/\/www.khanacademy.org\/computing\/computers-and-internet)\nHow do computers store data? Hoes does the Internet connects billions of devices worldwide? How do we protect data from cyber threats? Start from the foundation of how computers work at the electrical level to how computing innovations like the Internet, encryption, and sensors work.\n\n[Digital information](https:\/\/www.khanacademy.org\/computing\/computers-and-internet\/xcae6f4a7ff015e7d:digital-information)\n\n[Computers](https:\/\/www.khanacademy.org\/computing\/computers-and-internet\/xcae6f4a7ff015e7d:computers)\n\n[The Internet](https:\/\/www.khanacademy.org\/computing\/computers-and-internet\/xcae6f4a7ff015e7d:the-internet)\n\n[Online data security](https:\/\/www.khanacademy.org\/computing\/computers-and-internet\/xcae6f4a7ff015e7d:online-data-security)\n\n[Computing innovations](https:\/\/www.khanacademy.org\/computing\/computers-and-internet\/xcae6f4a7ff015e7d:computing-innovations)\n\n#### [Computer science theory](https:\/\/www.khanacademy.org\/computing\/computer-science)\nExplore advanced computer science topics from algorithms (how we solve common computing problems and measure our solutions' efficiency), to cryptography (how we protect secret information), to information theory (how we encode and compress information). Ideal for learners with some programming background.\n\n[Algorithms](https:\/\/www.khanacademy.org\/computing\/computer-science\/algorithms)\n\n[Cryptography](https:\/\/www.khanacademy.org\/computing\/computer-science\/cryptography)\n\n[Information theory](https:\/\/www.khanacademy.org\/computing\/computer-science\/informationtheory)\n\n#### [Pixar in a Box](https:\/\/www.khanacademy.org\/computing\/pixar)\n[Orientation](https:\/\/www.khanacademy.org\/computing\/pixar\/start)\n\n[The art of storytelling](https:\/\/www.khanacademy.org\/computing\/pixar\/storytelling)\n\n[The art of lighting](https:\/\/www.khanacademy.org\/computing\/pixar\/art-of-lighting)\n\n[Simulation](https:\/\/www.khanacademy.org\/computing\/pixar\/simulation)\n\n[Color science](https:\/\/www.khanacademy.org\/computing\/pixar\/color)\n\n[Virtual cameras](https:\/\/www.khanacademy.org\/computing\/pixar\/virtual-cameras)\n\n[Effects](https:\/\/www.khanacademy.org\/computing\/pixar\/effects)\n\n[Patterns](https:\/\/www.khanacademy.org\/computing\/pixar\/pattern)\n\n[Rigging](https:\/\/www.khanacademy.org\/computing\/pixar\/pixar-rigging)\n\n[Animation](https:\/\/www.khanacademy.org\/computing\/pixar\/animate)\n\n[Environment modeling](https:\/\/www.khanacademy.org\/computing\/pixar\/environment-modeling-2)\n\n[Character modeling](https:\/\/www.khanacademy.org\/computing\/pixar\/modeling-character)\n\n[Crowds](https:\/\/www.khanacademy.org\/computing\/pixar\/crowds)\n\n[Sets & staging](https:\/\/www.khanacademy.org\/computing\/pixar\/sets)\n\n[Rendering](https:\/\/www.khanacademy.org\/computing\/pixar\/rendering)\n\n#### [Code.org](https:\/\/www.khanacademy.org\/computing\/code-org)\nLaunched in 2013, Code.org is a non-profit dedicated to expanding access to computer science, and increasing participation by women and underrepresented students of color. Our vision is that every student in every school should have the opportunity to learn computer science.\n\n[Computers and the Internet](https:\/\/www.khanacademy.org\/computing\/code-org\/computers-and-the-internet)\n\n[How AI works](https:\/\/www.khanacademy.org\/computing\/code-org\/x06130d92:how-ai-works)\n\n[How not to get hacked](https:\/\/www.khanacademy.org\/computing\/code-org\/x06130d92:how-not-to-get-hacked)\n\n[Blockchain technology](https:\/\/www.khanacademy.org\/computing\/code-org\/x06130d92:blockchain-technology)\n\n#### [Hour of Code](https:\/\/www.khanacademy.org\/computing\/hour-of-code)\nOnly have an hour? Learn the basics of programming, making webpages, or creating databases.\n\n[Hour of Code lessons](https:\/\/www.khanacademy.org\/computing\/hour-of-code\/hour-of-code-lessons)\n\n[Additional resources](https:\/\/www.khanacademy.org\/computing\/hour-of-code\/hour-of-code-resources)\n\n#### [Computational Thinking](https:\/\/www.khanacademy.org\/computing\/tesda-computational-thinking)\n[Computational thinking](https:\/\/www.khanacademy.org\/computing\/tesda-computational-thinking\/xed777e2cccd04061:introduction)\n\n#### [Grade 9 Computer Science - Pakistan National Curriculum](https:\/\/www.khanacademy.org\/computing\/grade-9-computer-science-pakistan-national-curriculum)\n[Computer systems](https:\/\/www.khanacademy.org\/computing\/grade-9-computer-science-pakistan-national-curriculum\/x3427b535a49e4005:computer-system)\n\n[Computational thinking & algorithms](https:\/\/www.khanacademy.org\/computing\/grade-9-computer-science-pakistan-national-curriculum\/x3427b535a49e4005:computational-thinking-algorithms)\n\n[Programing fundamentals](https:\/\/www.khanacademy.org\/computing\/grade-9-computer-science-pakistan-national-curriculum\/x3427b535a49e4005:programing-fundamentals)\n\n[Data and analysis](https:\/\/www.khanacademy.org\/computing\/grade-9-computer-science-pakistan-national-curriculum\/x3427b535a49e4005:data-and-analysis)\n\n[Applications of computer science](https:\/\/www.khanacademy.org\/computing\/grade-9-computer-science-pakistan-national-curriculum\/x3427b535a49e4005:applications-of-computer-science)\n\n[Impacts of computing](https:\/\/www.khanacademy.org\/computing\/grade-9-computer-science-pakistan-national-curriculum\/x3427b535a49e4005:impacts-of-computing)\n\n[Entrepreneurship](https:\/\/www.khanacademy.org\/computing\/grade-9-computer-science-pakistan-national-curriculum\/x3427b535a49e4005:entrepreneurship)\n\nOur mission is to provide a free, world-class education to anyone, anywhere.\n\nKhan Academy is a 501(c)(3) nonprofit organization. [Donate](https:\/\/donate.khanacademy.org\/campaign\/580662\/donate?c_src2=Webapp.footer) or [volunteer](https:\/\/www.khanacademy.org\/contribute) today\\!\n\n## Site Navigation\n- ### [About](https:\/\/www.khanacademy.org\/about)\n  - [News](https:\/\/blog.khanacademy.org\/news\/)\n  - [Impact](https:\/\/blog.khanacademy.org\/research\/)\n  - [Our team](https:\/\/www.khanacademy.org\/about\/the-team)\n  - [Our interns](https:\/\/www.khanacademy.org\/about\/our-interns)\n  - [Our content specialists](https:\/\/www.khanacademy.org\/about\/our-content-specialists)\n  - [Our leadership](https:\/\/www.khanacademy.org\/about\/our-board)\n  - [Our supporters](https:\/\/www.khanacademy.org\/about\/our-supporters)\n  - [Our contributors](https:\/\/www.khanacademy.org\/contribute\/credits)\n  - [Our finances](https:\/\/khanacademyannualreport.org\/#finances)\n  - [Careers](https:\/\/www.khanacademy.org\/careers)\n  - [Internships](https:\/\/www.khanacademy.org\/careers\/interns)\n- ### Contact\n  - [Help center](https:\/\/khanacademy.zendesk.com\/hc\/en-us)\n  - [Support community](https:\/\/khanacademy.zendesk.com\/hc\/en-us\/community\/topics)\n  - [Share your story](https:\/\/www.khanacademy.org\/stories)\n  - [Press](https:\/\/khanacademy.zendesk.com\/hc\/en-us\/articles\/202483630)\n- ### [Download our apps](https:\/\/www.khanacademy.org\/downloads)\n  - [![Download on the App Store](https:\/\/tools.applemediaservices.com\/api\/badges\/download-on-the-app-store\/black\/en-us?releaseDate=1331424000)](https:\/\/itunes.apple.com\/app\/apple-store\/id469863705?pt=698519&ct=website%20footer&mt=8)\n  - [![Get it on Google Play](https:\/\/cdn.kastatic.org\/images\/store-badges\/google-play\/en.png)](https:\/\/play.google.com\/store\/apps\/details?id=org.khanacademy.android&referrer=utm_source%3Dwebsite%2520footer%26utm_medium%3Dwebsite%2520footer%26utm_campaign%3Dwebsite%2520footer)\n- ### Courses\n  - [Math: Pre-K - 8th grade](https:\/\/www.khanacademy.org\/math\/k-8-grades)\n  - [Math: High school & college](https:\/\/www.khanacademy.org\/math)\n  - [Math: Multiple grades](https:\/\/www.khanacademy.org\/math\/multiple-grades)\n  - [Math: Get ready courses](https:\/\/www.khanacademy.org\/math\/get-ready-courses)\n  - [Test prep](https:\/\/www.khanacademy.org\/test-prep)\n  - [English language arts (ELA)](https:\/\/www.khanacademy.org\/ela)\n  - [Science](https:\/\/www.khanacademy.org\/science)\n  - [Social studies](https:\/\/www.khanacademy.org\/humanities)\n  - [Computing](https:\/\/www.khanacademy.org\/computing)\n  - [Economics](https:\/\/www.khanacademy.org\/economics-finance-domain)\n  - [Life skills](https:\/\/www.khanacademy.org\/college-careers-more)\n  - [Partner courses](https:\/\/www.khanacademy.org\/partner-content)\n\nLanguage\n\nEnglish\n\nCountry[![](https:\/\/cdn.kastatic.org\/images\/country-flag-icons\/us-flag.png)U.S.](https:\/\/www.khanacademy.org\/)[![](https:\/\/cdn.kastatic.org\/images\/country-flag-icons\/india-flag.png)India](https:\/\/india.khanacademy.org\/)[![](https:\/\/cdn.kastatic.org\/images\/country-flag-icons\/mexico-flag.png)Mexico](https:\/\/es.khanacademy.org\/)[![](https:\/\/cdn.kastatic.org\/images\/country-flag-icons\/brazil-flag.png)Brazil](https:\/\/pt.khanacademy.org\/)\n\n© 2026 Khan Academy\n\n[Terms of use](https:\/\/www.khanacademy.org\/about\/docs\/khan-academy-terms-of-service)\n\n[Privacy Policy](https:\/\/www.khanacademy.org\/about\/privacy-policy)\n\n[Cookie Notice](https:\/\/www.khanacademy.org\/about\/cookie-policy)\n\n[Accessibility Statement](https:\/\/www.khanacademy.org\/about\/accessibility-statement)","attrs_readable_markdown":"If you're seeing this message, it means we're having trouble loading external resources on our website.\n\nIf you're behind a web filter, please make sure that the domains \\*.kastatic.org and \\*.kasandbox.org are unblocked.\n\nSelect a category to view its courses\n\n## Welcome to Khan Academy\\!\nSo we can give you the right tools, let us know if you're a...\n\n#### [Intro to computer science - Python](https:\/\/www.khanacademy.org\/computing\/intro-to-python-fundamentals)\nUse programming as a tool to design recommendation engines, model infectious diseases, create game levels, and more! Start with the Python fundamentals like variables, conditionals, loops, and functions, as you build a portfolio of projects that showcase some of the exciting ways you can apply programming to real world problems.\n\n#### [Computer programming - JavaScript and the web](https:\/\/www.khanacademy.org\/computing\/computer-programming)\nLearn how to program drawings, animations, and games using JavaScript and the Processing library, and explore the technologies behind the web as you design webpages with HTML and CSS.\n\n#### [AP®︎\/College Computer Science Principles](https:\/\/www.khanacademy.org\/computing\/ap-computer-science-principles)\nLearn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer components, internet protocols, programming skills, algorithms, and data analysis.\n\n#### [Computers and the Internet](https:\/\/www.khanacademy.org\/computing\/computers-and-internet)\nHow do computers store data? Hoes does the Internet connects billions of devices worldwide? How do we protect data from cyber threats? Start from the foundation of how computers work at the electrical level to how computing innovations like the Internet, encryption, and sensors work.\n\n#### [Computer science theory](https:\/\/www.khanacademy.org\/computing\/computer-science)\nExplore advanced computer science topics from algorithms (how we solve common computing problems and measure our solutions' efficiency), to cryptography (how we protect secret information), to information theory (how we encode and compress information). Ideal for learners with some programming background.\n\n#### [Code.org](https:\/\/www.khanacademy.org\/computing\/code-org)\nLaunched in 2013, Code.org is a non-profit dedicated to expanding access to computer science, and increasing participation by women and underrepresented students of color. Our vision is that every student in every school should have the opportunity to learn computer science.\n\n#### [Hour of Code](https:\/\/www.khanacademy.org\/computing\/hour-of-code)\nOnly have an hour? Learn the basics of programming, making webpages, or creating databases.","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

1 day ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://www.khanacademy.org/computing
Last Crawled	2026-04-08 00:01:11 (1 day ago)
First Indexed	2014-11-27 06:45:55 (11 years ago)
HTTP Status Code	200
Meta Title	Computing \| Khan Academy
Meta Description	Learn how to code computer programs, how to design algorithms that make computers more efficient, and discover what a career in computing could look like.
Meta Canonical	null
Boilerpipe Text	If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains .kastatic.org and .kasandbox.org are unblocked. Select a category to view its courses Welcome to Khan Academy! So we can give you the right tools, let us know if you're a... Intro to computer science - Python Use programming as a tool to design recommendation engines, model infectious diseases, create game levels, and more! Start with the Python fundamentals like variables, conditionals, loops, and functions, as you build a portfolio of projects that showcase some of the exciting ways you can apply programming to real world problems. Computer programming - JavaScript and the web Learn how to program drawings, animations, and games using JavaScript and the Processing library, and explore the technologies behind the web as you design webpages with HTML and CSS. AP®︎/College Computer Science Principles Learn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer components, internet protocols, programming skills, algorithms, and data analysis. Computers and the Internet How do computers store data? Hoes does the Internet connects billions of devices worldwide? How do we protect data from cyber threats? Start from the foundation of how computers work at the electrical level to how computing innovations like the Internet, encryption, and sensors work. Computer science theory Explore advanced computer science topics from algorithms (how we solve common computing problems and measure our solutions' efficiency), to cryptography (how we protect secret information), to information theory (how we encode and compress information). Ideal for learners with some programming background. Code.org Launched in 2013, Code.org is a non-profit dedicated to expanding access to computer science, and increasing participation by women and underrepresented students of color. Our vision is that every student in every school should have the opportunity to learn computer science. Hour of Code Only have an hour? Learn the basics of programming, making webpages, or creating databases.
Markdown	[Skip to main content](https://www.khanacademy.org/computing#main-content) If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains \.kastatic.org and \.kasandbox.org are unblocked. Explore Select a category to view its courses Search Donate [Log in](https://www.khanacademy.org/login?continue=%2Fcomputing)[Sign up](https://www.khanacademy.org/signup?continue=%2Fcomputing) [Search for courses, skills, and videos](https://www.khanacademy.org/search) ## Welcome to Khan Academy\! So we can give you the right tools, let us know if you're a... Learner Teacher Parent # Computing # Computing #### [Intro to computer science - Python](https://www.khanacademy.org/computing/intro-to-python-fundamentals) Use programming as a tool to design recommendation engines, model infectious diseases, create game levels, and more! Start with the Python fundamentals like variables, conditionals, loops, and functions, as you build a portfolio of projects that showcase some of the exciting ways you can apply programming to real world problems. [Computational thinking with variables](https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables) [Designing algorithms with conditionals](https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:designing-algorithms-with-conditionals) [Simulating phenomena with loops](https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:simulating-phenomena-with-loops) [Playing games with functions](https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:playing-games-with-functions) [Automating tasks with lists](https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:automating-tasks-with-lists) [Analyzing data with dictionaries](https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:analyzing-data-with-dictionaries) [Building software with classes](https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:building-software-with-classes) [Teacher resources](https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:teacher-resources) #### [Computer programming - JavaScript and the web](https://www.khanacademy.org/computing/computer-programming) Learn how to program drawings, animations, and games using JavaScript and the Processing library, and explore the technologies behind the web as you design webpages with HTML and CSS. [Intro to JS: Drawing & Animation](https://www.khanacademy.org/computing/computer-programming/programming) [Intro to HTML/CSS: Making webpages](https://www.khanacademy.org/computing/computer-programming/html-css) [Intro to SQL: Querying and managing data](https://www.khanacademy.org/computing/computer-programming/sql) [Advanced JS: Games & Visualizations](https://www.khanacademy.org/computing/computer-programming/programming-games-visualizations) [Advanced JS: Natural Simulations](https://www.khanacademy.org/computing/computer-programming/programming-natural-simulations) [HTML/JS: Making webpages interactive](https://www.khanacademy.org/computing/computer-programming/html-css-js) [HTML/JS: Making webpages interactive with jQuery](https://www.khanacademy.org/computing/computer-programming/html-js-jquery) [Meet the professional](https://www.khanacademy.org/computing/computer-programming/meet-the-computing-professional-unit) #### [AP®︎/College Computer Science Principles](https://www.khanacademy.org/computing/ap-computer-science-principles) Learn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer components, internet protocols, programming skills, algorithms, and data analysis. [Digital information](https://www.khanacademy.org/computing/ap-computer-science-principles/x2d2f703b37b450a3:digital-information) [The Internet](https://www.khanacademy.org/computing/ap-computer-science-principles/the-internet) [Programming](https://www.khanacademy.org/computing/ap-computer-science-principles/programming-101) [Algorithms](https://www.khanacademy.org/computing/ap-computer-science-principles/algorithms-101) [Data analysis](https://www.khanacademy.org/computing/ap-computer-science-principles/data-analysis-101) [Simulations](https://www.khanacademy.org/computing/ap-computer-science-principles/x2d2f703b37b450a3:simulations) [Online data security](https://www.khanacademy.org/computing/ap-computer-science-principles/x2d2f703b37b450a3:online-data-security) [Computing innovations](https://www.khanacademy.org/computing/ap-computer-science-principles/x2d2f703b37b450a3:computing-innovations) [Exam preparation](https://www.khanacademy.org/computing/ap-computer-science-principles/ap-csp-exam-preparation) [AP®︎ CSP standards mappings](https://www.khanacademy.org/computing/ap-computer-science-principles/standards-mappings) #### [Computers and the Internet](https://www.khanacademy.org/computing/computers-and-internet) How do computers store data? Hoes does the Internet connects billions of devices worldwide? How do we protect data from cyber threats? Start from the foundation of how computers work at the electrical level to how computing innovations like the Internet, encryption, and sensors work. [Digital information](https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:digital-information) [Computers](https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:computers) [The Internet](https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:the-internet) [Online data security](https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:online-data-security) [Computing innovations](https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:computing-innovations) #### [Computer science theory](https://www.khanacademy.org/computing/computer-science) Explore advanced computer science topics from algorithms (how we solve common computing problems and measure our solutions' efficiency), to cryptography (how we protect secret information), to information theory (how we encode and compress information). Ideal for learners with some programming background. [Algorithms](https://www.khanacademy.org/computing/computer-science/algorithms) [Cryptography](https://www.khanacademy.org/computing/computer-science/cryptography) [Information theory](https://www.khanacademy.org/computing/computer-science/informationtheory) #### [Pixar in a Box](https://www.khanacademy.org/computing/pixar) [Orientation](https://www.khanacademy.org/computing/pixar/start) [The art of storytelling](https://www.khanacademy.org/computing/pixar/storytelling) [The art of lighting](https://www.khanacademy.org/computing/pixar/art-of-lighting) [Simulation](https://www.khanacademy.org/computing/pixar/simulation) [Color science](https://www.khanacademy.org/computing/pixar/color) [Virtual cameras](https://www.khanacademy.org/computing/pixar/virtual-cameras) [Effects](https://www.khanacademy.org/computing/pixar/effects) [Patterns](https://www.khanacademy.org/computing/pixar/pattern) [Rigging](https://www.khanacademy.org/computing/pixar/pixar-rigging) [Animation](https://www.khanacademy.org/computing/pixar/animate) [Environment modeling](https://www.khanacademy.org/computing/pixar/environment-modeling-2) [Character modeling](https://www.khanacademy.org/computing/pixar/modeling-character) [Crowds](https://www.khanacademy.org/computing/pixar/crowds) [Sets & staging](https://www.khanacademy.org/computing/pixar/sets) [Rendering](https://www.khanacademy.org/computing/pixar/rendering) #### [Code.org](https://www.khanacademy.org/computing/code-org) Launched in 2013, Code.org is a non-profit dedicated to expanding access to computer science, and increasing participation by women and underrepresented students of color. Our vision is that every student in every school should have the opportunity to learn computer science. [Computers and the Internet](https://www.khanacademy.org/computing/code-org/computers-and-the-internet) [How AI works](https://www.khanacademy.org/computing/code-org/x06130d92:how-ai-works) [How not to get hacked](https://www.khanacademy.org/computing/code-org/x06130d92:how-not-to-get-hacked) [Blockchain technology](https://www.khanacademy.org/computing/code-org/x06130d92:blockchain-technology) #### [Hour of Code](https://www.khanacademy.org/computing/hour-of-code) Only have an hour? Learn the basics of programming, making webpages, or creating databases. [Hour of Code lessons](https://www.khanacademy.org/computing/hour-of-code/hour-of-code-lessons) [Additional resources](https://www.khanacademy.org/computing/hour-of-code/hour-of-code-resources) #### [Computational Thinking](https://www.khanacademy.org/computing/tesda-computational-thinking) [Computational thinking](https://www.khanacademy.org/computing/tesda-computational-thinking/xed777e2cccd04061:introduction) #### [Grade 9 Computer Science - Pakistan National Curriculum](https://www.khanacademy.org/computing/grade-9-computer-science-pakistan-national-curriculum) [Computer systems](https://www.khanacademy.org/computing/grade-9-computer-science-pakistan-national-curriculum/x3427b535a49e4005:computer-system) [Computational thinking & algorithms](https://www.khanacademy.org/computing/grade-9-computer-science-pakistan-national-curriculum/x3427b535a49e4005:computational-thinking-algorithms) [Programing fundamentals](https://www.khanacademy.org/computing/grade-9-computer-science-pakistan-national-curriculum/x3427b535a49e4005:programing-fundamentals) [Data and analysis](https://www.khanacademy.org/computing/grade-9-computer-science-pakistan-national-curriculum/x3427b535a49e4005:data-and-analysis) [Applications of computer science](https://www.khanacademy.org/computing/grade-9-computer-science-pakistan-national-curriculum/x3427b535a49e4005:applications-of-computer-science) [Impacts of computing](https://www.khanacademy.org/computing/grade-9-computer-science-pakistan-national-curriculum/x3427b535a49e4005:impacts-of-computing) [Entrepreneurship](https://www.khanacademy.org/computing/grade-9-computer-science-pakistan-national-curriculum/x3427b535a49e4005:entrepreneurship) Our mission is to provide a free, world-class education to anyone, anywhere. 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Readable Markdown	If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains \.kastatic.org and \.kasandbox.org are unblocked. Select a category to view its courses ## Welcome to Khan Academy\! So we can give you the right tools, let us know if you're a... #### [Intro to computer science - Python](https://www.khanacademy.org/computing/intro-to-python-fundamentals) Use programming as a tool to design recommendation engines, model infectious diseases, create game levels, and more! Start with the Python fundamentals like variables, conditionals, loops, and functions, as you build a portfolio of projects that showcase some of the exciting ways you can apply programming to real world problems. #### [Computer programming - JavaScript and the web](https://www.khanacademy.org/computing/computer-programming) Learn how to program drawings, animations, and games using JavaScript and the Processing library, and explore the technologies behind the web as you design webpages with HTML and CSS. #### [AP®︎/College Computer Science Principles](https://www.khanacademy.org/computing/ap-computer-science-principles) Learn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer components, internet protocols, programming skills, algorithms, and data analysis. #### [Computers and the Internet](https://www.khanacademy.org/computing/computers-and-internet) How do computers store data? Hoes does the Internet connects billions of devices worldwide? How do we protect data from cyber threats? Start from the foundation of how computers work at the electrical level to how computing innovations like the Internet, encryption, and sensors work. #### [Computer science theory](https://www.khanacademy.org/computing/computer-science) Explore advanced computer science topics from algorithms (how we solve common computing problems and measure our solutions' efficiency), to cryptography (how we protect secret information), to information theory (how we encode and compress information). Ideal for learners with some programming background. #### [Code.org](https://www.khanacademy.org/computing/code-org) Launched in 2013, Code.org is a non-profit dedicated to expanding access to computer science, and increasing participation by women and underrepresented students of color. Our vision is that every student in every school should have the opportunity to learn computer science. #### [Hour of Code](https://www.khanacademy.org/computing/hour-of-code) Only have an hour? Learn the basics of programming, making webpages, or creating databases.
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