Website SEO Report

Results for khanacademy.org

We have found 39 SEO issues on 9 checked pages of khanacademy.org website. Average response time was 1638 ms. See website report below or individual reports for all crawled pages.

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Website Overview

Main URL: https://www.khanacademy.org/math/early-math Response time: 1345 ms

Passed 23 Errors 0 Warnings 23 Updated on: 2017-02-01 15:55

Every issue is an opportunity to improve your website search engine rankings and SEO score. Review the common SEO issues below and get detailed report for every page.

Passed: Relative Canonical URL
Passed: Link Contains Underscores
Passed: Link Contains Parameters
Passed: Repeated Levels in URL
Passed: External Links Without Nofollow
Passed: Multiple H1 Tag
Passed: No Viewport Meta Tag
Passed: Missing Title Tag
Passed: Duplicated Title
Passed: No Meta Description Tag
Passed: Duplicated Meta Description
Passed: Broken Resources
Warning: Meta Description Too Long/Too Short

Recommended description length 50-160 characters. Keep these clear and relevant, though use the added space to expand on the title tag in a meaningful way

Meta tags are used to provide search engines with additional information about a page. Meta tags are added to <head> section of the HTML page. Meta description tag provides a short description of the page. In some situations this description is used as a part of the snippet shown in the search results for your website. Good description together with title increases CTR for your site and drives more organic traffic. That's why it is important to work on good page description.

PageDetails
https://www.khanacademy.org/math/geometry-home Meta description We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll co length is 794. Recommended between 50 and 160.
https://www.khanacademy.org/math/statistics-probability Meta description We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range length is 820. Recommended between 50 and 160.
https://www.khanacademy.org/math/precalculus Meta description Precalculus gives you the background for the mathematical concepts that you'll use over and over in calculus, including trigonometry, functions, complex numbers, vectors, matrices, and others. length is 192. Recommended between 50 and 160.

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Passed: Incorrect Language Definition
Warning: Missing ALT Attribute

The alt attribute provides alternative information for an image if a user for some reason cannot view it (because of slow connection, an error in the src attribute, or if the user uses a screen reader). It also helps crawlers understand what is in an image. Providing meaningful description for an image also can help drive organic traffic from image search.

PageDetails
https://www.khanacademy.org/math/geometry-home Images without 'alt' attribute:
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view
https://www.khanacademy.org/math/statistics-probability Images without 'alt' attribute:
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view
show all
https://www.khanacademy.org/math/precalculus Images without 'alt' attribute:
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view
- data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs= view

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Passed: Use of Flash
Passed: No H1 Tag
Passed: Title Too Long/Too Short
Passed: H1 Duplicates Page Title
Warning: Spelling Errors

Your page text contains spelling errors. Spelling errors make your site look unprofessional. Errors in keywords will lead to loosing organic traffic.

PageDetails
https://www.khanacademy.org/math/geometry-home Detected language: en. Found 9 spelling errors: Precalculus, MCAT, IIT, JEE, NCLEX, centroids, radians, circumcircles, incircles.
https://www.khanacademy.org/math/statistics-probability Detected language: en. Found 10 spelling errors: Precalculus, MCAT, IIT, JEE, NCLEX, Interquartile, IQR, Scatterplots, Combinatorics, Pixar.
https://www.khanacademy.org/math/precalculus Detected language: en. Found 9 spelling errors: Precalculus, MCAT, IIT, JEE, NCLEX, precalculus, directrix, combinatorics, invertible.

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Passed: No H2 Tags
Notice: Too Many Links on Page

It is generally agreed SEO recommendation that page should contain less than 100 links. Read wonderful blog post on this topic: How Many Links Is Too Many

PageDetails
https://www.khanacademy.org/math/geometry-home Actual links: 229, recommended maximum: 100
https://www.khanacademy.org/math/statistics-probability Actual links: 172, recommended maximum: 100
https://www.khanacademy.org/math/precalculus Actual links: 178, recommended maximum: 100

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Passed: Noindex Tag
Notice: Page Size is Too Big

Speed is the critical quality parameter for users and thus for search engines. Faster pages have lower bounce rate and higher rankings in search engines. Though there is no ideal standard page size we recommend it to be within 51200 bytes. How did we come up with this number? Users now more and more tend to be on mobile device. Average mobile device uses 3G connection. 3G connection speed varies between 144 and 400 kilobit per second. To satisfy and impress a user with speed HTML page and blocking referenced resources should load within couple of seconds. We set limit to 500ms and this gives us the size of 51200 bytes on average connection. Moreover if you check your page with google speed test tool it will complain about slow website if your server respond longer than 200ms.

PageDetails
https://www.khanacademy.org/math/geometry-home Current: 834895 bytes, recommended: 51200 bytes
https://www.khanacademy.org/math/statistics-probability Current: 563945 bytes, recommended: 51200 bytes
https://www.khanacademy.org/math/precalculus Current: 533901 bytes, recommended: 51200 bytes

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Passed: No DOCTYPE defined
Passed: Server and Page Encoding are Different
Passed: Blocked in Robots.txt
Passed: Meta Refresh Redirect

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