open.kattis.com
🖥 Status: up
🕒 Response Time: 0.301 sec
⬅️ Response Code: 200
In the time frame of 2 323 days since August 16, 2019, the report shows open.kattis.com passed 2 availability checks. Out of all tests conducted, open.kattis.com was up 2 times, the last time on August 16, 2019, when a code 200 has been returned. As of December 26, 2025, evaluations revealed no instances of open.kattis.com's inoperability. As of December 26, 2025, all received replies confirm that there have been no responses with an error status. The reported response time for open.kattis.com on August 16, 2019, was 0.301 seconds, compared to an average of 0.300 seconds.
2
Last Updated: August 16, 2019
zhongguozhaoshang.com
Last Updated: December 15, 2025
Status: up
Response Time: 0.571 sec
Response Code: 200
webervations.com
Last Updated: December 21, 2025
Status: up
Response Time: 0.226 sec
Response Code: 200
paiduaykan.com
Last Updated: November 8, 2025
Status: up
Response Time: 3.266 sec
Response Code: 200
| United States | 50.00% | ||||||||
| Netherlands | 50.00% | ||||||||
| 08:45 | 08:46 | ||||||||
Different Extensions
Search Results
| Site | Total Checks | Last Modified |
|---|---|---|
| 1 | December 26, 2025 | |
| 1 | December 26, 2025 | |
| 2 | August 16, 2019 | |
| 1 | December 26, 2025 | |
| 1 | December 26, 2025 |
Zhongguozhaoshang.com | Open.kattis.com | ||||
|---|---|---|---|---|---|
| Page Title | The website title tag, a crucial on-page ranking factor, should be unique to each page, incorporate core target keywords early in the text, clearly define the page topic, and craft a compelling headline that entices users to visit the page and fulfill their informational need. |
|---|---|
| Kattis, Kattis Length: 14 characters | |
| Meta Description | Meta descriptions serve as your free ad copy in search engine results; use this prime opportunity with persuasive language under 160 characters that encourages users to visit your page. |
| no meta description data for open.kattis.com 2025-12-26T06:11:05+00:00 | |
| Meta Keywords | While meta keywords might be scanned by some minor or less sophisticated search engines occasionally, they should not be considered a primary strategy for achieving high rankings on major platforms like Google where their impact is negligible or zero. |
| no meta keywords data for open.kattis.com 2025-12-26T06:11:05+00:00 | |
| Page Content | Understand mobile usability implications when crafting page content by prioritizing readability on smaller screens, ensuring text size is legible and content loads quickly for all users accessing your site. |
| Web Page Content Length: 28729 characters | |
| H1 Heading | An H1 element should accurately encapsulate the single, primary purpose or core topic of the entire page, ensuring immediate relevance capture for both visitors seeking that specific information and crawlers indexing the content. |
| Welcome to the Kattis Problem Archive Count: 1 heading tag | |
| H2 Headings | The strategic placement of H2 elements plays a crucial role in content marketing by helping segment information into digestible chunks for social sharing, encouraging user engagement, and facilitating link building opportunities. |
| Suggested problems Ranklist Universities Countries Count: 4 heading tag | |
| H3 Headings | Using descriptive H3 headers consistently across your website helps search engines build a stronger semantic understanding of your overall site architecture and topical authority. |
| no h3 headings data for open.kattis.com 2025-12-26T06:11:05+00:00 | |
| H4 Headings | When used effectively, H4 tags help reinforce the main topic's relevance by providing clear context for supporting information, guiding users through your argument or explanation in a logical sequence. |
| Kattis Count: 1 heading tag | |
| H5-H6 Headings | While powerful for organizing complex content, the use of H5-H6 tags must be accompanied by clear, concise text that accurately describes the content below the heading. |
| no h5-h6 headings data for open.kattis.com 2025-12-26T06:11:05+00:00 | |
| Image ALT Attributes | Images serving as site navigation, like logos or menu icons, require descriptive ALT attributes that accurately reflect their function and destination, guiding screen readers. |
| no image alt attributes data for open.kattis.com 2025-12-26T06:11:05+00:00 | |
| Robots.txt | Remember, robots.txt cannot protect against scraping or indexing of content placed outside the specified blocked paths; use it as a guide but supplement with other security measures like authentication for truly sensitive pages. |
| file robots.txt was found on the website | |
| XML Sitemap | To enhance user experience, ensure your XML sitemap includes critical pages like your Contact Us page, Privacy Policy, and FAQ sections, as search engines value these informational endpoints for delivering comprehensive answers and establishing trust with internet users. |
| no xml sitemap data for open.kattis.com 2025-12-26T06:11:05+00:00 | |
| Page Size | Avoid using excessive, heavy fonts, overly complex CSS animations, or large background video files which can drastically inflate the total page size and negatively impact user engagement metrics. |
| page size: 28 kb | |
| Response Time | Continuously monitor and fine-tune server response times using performance monitoring tools to maintain fast load speeds, a critical factor for retaining visitors and achieving better search engine placement. |
| response time: 0.300 sec | |
| Minify CSS | Search engine rankings can be positively impacted by aggressive CSS minification; by systematically removing all whitespace, empty lines, and redundant code from stylesheets, website operators achieve significantly smaller file sizes, faster page loads, better Core Web Vitals scores, and consequently, improved visibility. |
| Minified: /assets/781f6b13f8110305b9759e61c0cf0de1/jquery-ui-dist/jquery-ui.theme.min.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fortawesome/fontawesome-free/css/all.min.css Unminified: /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/merriweather/300.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/merriweather/300-italic.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/merriweather/400.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/merriweather/400-italic.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/merriweather/700.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/merriweather/700-italic.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/ubuntu/300.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/ubuntu/300-italic.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/ubuntu/400.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/ubuntu/400-italic.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/ubuntu/500.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/ubuntu/500-italic.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/ubuntu/700.css /assets/781f6b13f8110305b9759e61c0cf0de1/@fontsource/ubuntu/700-italic.css /assets/781f6b13f8110305b9759e61c0cf0de1/bootstrap-daterangepicker/daterangepicker.css /assets/781f6b13f8110305b9759e61c0cf0de1/select2/dist/css/select2.css /css/daaf8d08f7e6fc87777e52bc02e73790/style.css included in the page | |
| Minify JavaScript | Regularly audit and re-minify your JavaScript files after any code updates to ensure they remain optimized and benefit from the latest minification techniques and browser performance improvements, thereby sustaining your site's speed and SEO effectiveness over time. |
| Minified: https://js.sentry-cdn.com/1ad5e9767ad243d396a93ef40135e743.min.js /assets/781f6b13f8110305b9759e61c0cf0de1/jquery/dist/jquery.min.js /assets/781f6b13f8110305b9759e61c0cf0de1/jquery-ui-dist/jquery-ui.min.js /js/4b74d06a062e23d30aaff9923efb3934/modules/timezone.js /assets/781f6b13f8110305b9759e61c0cf0de1/moment/min/moment.min.js /assets/781f6b13f8110305b9759e61c0cf0de1/select2/dist/js/select2.full.min.js https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015 Unminified: /js/4b74d06a062e23d30aaff9923efb3934/pages/master/nav.js /js/4b74d06a062e23d30aaff9923efb3934/pages/master/top_bar.js /js/4b74d06a062e23d30aaff9923efb3934/modules/table.js /assets/781f6b13f8110305b9759e61c0cf0de1/bootstrap-daterangepicker/daterangepicker.js https://status.kattis.com/embed/script.js detected during site scan | |
| Structured Data | Differentiate your website from generic search results by utilizing Schema.org structured data to trigger rich search results, offering users additional value directly in the search engine interface with features like ratings, prices, or event details integrated into the listing presentation. |
| no structured data data for open.kattis.com 2025-12-26T06:11:05+00:00 | |
| CDN Usage | A CDN not only accelerates content delivery but also serves as a critical layer of security for your website, offering features like DDoS protection and mitigating common threats like hotlinking and scraping, all of which contribute to improved site reliability and a better user perception influencing SEO signals. |
| content is delivered via CDN | |
| SSL certificates | SSL encryption protects user confidentiality during website interactions, preventing data interception by third parties; securing your site with SSL is a ranking factor implemented by search engines globally, signaling to users and crawlers alike that your website handles their information securely and responsibly. |
| SSL is enabled on the website |