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Dataquest: Learn Data Science — Python, R, SQL, PowerBI
97% of learners recommend Dataquest for learning data science. Better teaching = better outcomes. Take a free lesson now >>
https://www.dataquest.io/
1 high issue
3.0%
2 medium issues
6.1%
1 low issue
3.0%
29 tests passed
87.9%
0.09 seconds
77.64 kB
40 resources
Secure
Seo
Title
The title tag is perfect.
Dataquest: Learn Data Science — Python, R, SQL, PowerBI
Meta description
The meta description tag is good.
97% of learners recommend Dataquest for learning data science. Better teaching = better outcomes. Take a free lesson now >>
Headings
The headings are properly set.
  1. Master data skills. Build your career.
  1. Become a data expert faster with Dataquest.
  2. Dataquest makes your hard work count.
  3. Build a team of data experts.
  4. Learn with the Dataquest method.
  5. Browse our most popular paths and courses.
  6. Build your portfolio with projects
  7. Grow your career with Dataquest.
  8. Join 1M+ data learners on Dataquest.
  1. Start a new career
  2. Learn a skill
  3. Take a course
  4. 97%
  5. 4.9
  6. $30k
  7. Start learning with a free account today.
  1. Otávio Silveira
  2. Francisco Sosa
  3. Viktoria Jorayeva
  4. Sunishchal Dev
  5. Stacey Ustian
  6. Rahila Hashim
  7. Predict The Weather with Python
  8. Analyze Customers with SQL
  9. Model Churn with Excel
  10. Predict Football Winners with Python
  11. Classify Images with Python
  12. Build a Spam Filter with R
  13. Sign up for a free account
  14. Choose a course or path
  15. Learn with hands-on exercises
  16. Apply your skills
  1. Learn efficiently
  2. Challenge yourself with exercises
  3. Build your project portfolio
  4. Become
  5. Learn
  6. Explore
  7. About
Content keywords
The content has relevant keywords.
dataquestlearndatasciencepythonrsqlpowerbi
Image keywords
There are 26 images with missing alt attributes.
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  25. https://www.dataquest.io/wp-content/uploads/2022/06/right-arrow-long.svg
  26. https://www.dataquest.io/wp-content/uploads/2022/06/right-arrow-long.svg
SEO friendly URL
The URL is SEO friendly.
https://www.dataquest.io/
404 page
The website has 404 error pages.
https://www.dataquest.io/404-8d9e3023465c1646245ca9cfb65ac9a7
Robots.txt
The webpage can be accessed by search engines.
Noindex
The webpage does not have a noindex tag set.
In-page links
The number of links on the webpage is okay.
Language
The webpage has the language declared.
en
Favicon
The webpage has a favicon.
https://www.dataquest.io/wp-content/uploads/2022/05/cropped-dq-favicon-1-180x180.png
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 0.09 seconds.
Page size
The size of the HTML webpage is 77,638.00.
HTTP requests
There are fewer than 40 HTTP requests on the webpage.
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  6. https://www.dataquest.io/wp-content/uploads/2022/03/python.png
  7. https://www.dataquest.io/wp-content/uploads/2022/03/r.png
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  9. https://dq-marketing-site.s3.amazonaws.com/png/sql.png
  10. https://dq-marketing-site.s3.amazonaws.com/png/excel.png
  11. https://dq-marketing-site.s3.amazonaws.com/png/cli.png
  12. https://dq-marketing-site.s3.amazonaws.com/png/tableau.png
  13. https://dq-marketing-site.s3.amazonaws.com/png/spark.png
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  26. https://www.dataquest.io/wp-content/uploads/2022/06/right-arrow-long.svg
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Image format
There are 23 images that are not using the AVIF, WebP format.
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  2. https://www.dataquest.io/wp-content/uploads/2022/03/python.png
  3. https://www.dataquest.io/wp-content/uploads/2022/03/r.png
  4. https://dq-marketing-site.s3.amazonaws.com/png/bi.png
  5. https://dq-marketing-site.s3.amazonaws.com/png/sql.png
  6. https://dq-marketing-site.s3.amazonaws.com/png/excel.png
  7. https://dq-marketing-site.s3.amazonaws.com/png/cli.png
  8. https://dq-marketing-site.s3.amazonaws.com/png/tableau.png
  9. https://dq-marketing-site.s3.amazonaws.com/png/spark.png
  10. https://www.dataquest.io/wp-content/uploads/2022/04/answer-right-small-1100-2.png
  11. https://www.dataquest.io/wp-content/uploads/2022/06/headshot_0040_otavio-silveira-remini-enhanced.jpeg
  12. https://www.dataquest.io/wp-content/uploads/2022/06/francisco.jpeg
  13. https://www.dataquest.io/wp-content/uploads/2022/06/viktoria.jpeg
  14. https://www.dataquest.io/wp-content/uploads/2022/06/sunischal.jpeg
  15. https://www.dataquest.io/wp-content/uploads/2022/06/stacey.jpeg
  16. https://www.dataquest.io/wp-content/uploads/2022/06/rahila.jpeg
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  22. https://www.dataquest.io/wp-content/uploads/2022/06/northwestern-logo.png
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JavaScript defer
The are 1 javascript resources without the defer attribute.
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DOM size
The DOM size is optimal.
The HTML file has 667 DOM nodes.
Security
HTTPS encryption
The webpage uses HTTPS encryption.
The HTML file has https://www.dataquest.io/ DOM nodes.
Mixed content
There are no mixed content resources on the webpage.
Server signature
The webpage has a public server signature.
cloudflare
Unsafe cross-origin links
The webpage does not have unsafe cross-origin links.
Plaintext email
The webpage does not contain any plaintext emails.
Miscellaneous
Structured data
The webpage has structured data.
        Meta viewport
        The webpage has a meta viewport tag set.
        width=device-width, initial-scale=1
        Character set
        The webpage has a charset value set.
        UTF-8
        Sitemap
        The website has sitemaps.
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        2. https://www.dataquest.io/post-sitemap.xml
        Social
        The webpage has 4 social links.
        Content length
        The webpage has 17,772 words.
        Text to HTML ratio
        The text to HTML ratio is 30%.
        Inline CSS
        The webpage does not contain inline CSS code.
        Deprecated HTML
        There are no deprecated HTML tags on the webpage.