Archived
100/100
Average SEO score of top 100 sites: 75%
This webpage received an SEO score of 101 out of 100, which is higher than the average score of 75. Our analysis has identified 11 SEO issues that can be addressed to further enhance your website's performance and improve its search engine visibility.
11 Failed
1 Warnings
26 Passed
Common SEO issues
Score: 73
Failed: 3
Warnings: 0
Passed: 9
Google Search Results Preview Test
Desktop version
http://atcoder.jp/AtCoder (アットコーダー)
Mobile versionhttp://atcoder.jp/AtCoder (アットコーダー)
Keywords Cloud Test
Competitor Domains Test
Understand your competitors' SEO and backlink profile
Get related competitors and their domain authority score in relation to your domain.
Robots.txt Test
- Your site lacks a "robots.txt" file. This file can protect private content from appearing online, save bandwidth, and lower load on your server. A missing "robots.txt" file also generates additional errors in your apache log whenever robots request one. Read more about the robots.txt file, and how to create one for your site.
Sitemap Test
- Your site lacks a sitemap file. Sitemaps can help robots index your content more thoroughly and quickly. Read more on Google's guidelines for implementing the sitemap protocol.
Image Alt Test
- Your webpage has 3 'img' tags and all of them has the required 'alt' attribute.
Google Analytics Test
- Congratulations! Your website is using the asynchronous version of Google Analytics tracking code.
Favicon Test
- We've found a favicon in your page's HTML code but it's not accessible.
Backlinks Test
Get a full and detailed list of your backlinks!
To view your total number of backlinks and referring domains, please sign-up for a free trial!
JS Error Test
- Congratulation! There is no occurrence of any severe JavaScript Errors in your web page.
Speed optimizations
Score: 66
Failed: 2
Warnings: 1
Passed: 2
HTML Page Size Test
- Congratulations! Your HTML size is 10.76 Kb and this is under the average web page size of 33 Kb.
This leads to a faster page loading time than average.
HTML Compression/GZIP Test
- Congratulations! Your page is successfully compressed using gzip compression on your code.
Your HTML is compressed from 54.83 Kb to 10.76 Kb (80 % size savings). This helps ensure a faster loading web page and improved user experience.
Site Loading Speed Test
- Your site loading time is around 9.586 seconds and is over the average loading speed which is 5 seconds.
Accurate loading speed and website loading speed monitor
Get detailed and accurate loading speed reports for your websites and see how your pages are being loaded over time.
Register for free and use the Loading Speed Monitor from SEO Site Checkup Toolbox today and get valuable insights on how much time your customers need to wait until they see your page.
Page Objects Test
- Your page has more than 20 http requests, which can slow down page loading. You can try reducing http requests through various methods such as using text instead of images, using css sprites, using data URIs instead of images, or combining several external files together into one.
Image Caching Test
- Your site is not using expires headers for all of your images. An expires tag can help speed up the serving of your webpages for users that regularly visit your site and see the same images. Learn more about how to add expires headers to your images.
Server and security
Score: 0
Failed: 1
Warnings: 0
Passed: 1
URL Canonicalization Test
- http://atcoder.jp and http://www.atcoder.jp should resolve to the same URL, but currently do not.
HTTPS Test
Plaintext Emails Test
- Congratulations! Your webpage does not include email addresses in plaintext.
Mobile usability
Score: 0
Failed: 1
Warnings: 0
Passed: 1
Media Query Responsive Test
- Your website is not using media queries. You should consider using this technique in order to implement responsive design functionalities.
Mobile Snapshot Test
Advanced SEO
Score: 75
Failed: 1
Warnings: 0
Passed: 4
Structured Data Test
- Your webpage doesn't take the advantages of HTML Microdata specifications in order to markup structured data. View Google's guide for getting started with microdata.
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