69 tests were conducted on the operability of codeforces.com over the 2 021 days starting on January 31, 2021. In the course of 18 operational instances, codeforces.com's last uptime on February 15, 2026, returned a code 200, across conducted tests. The checks conducted as of August 14, 2026, did not find any downtime issues related to codeforces.com. July 25, 2026, marked the occurrence of the most recent error, with code 403, out of the 51 responses that encountered errors. Recorded at 0.037 seconds on July 25, 2026, codeforces.com's response time differed from its 0.095 seconds average.
| Russia | 100.00% | ||||||||
| 02:25 | |||||||||
| Site | Total Checks | Last Modified |
|---|---|---|
| 26 | January 26, 2021 | |
| 25 | January 31, 2021 | |
| 69 | January 31, 2021 | |
| 31 | January 31, 2021 | |
| 18 | January 31, 2021 |
Travelbird.de | Codeforces.com | ||||
|---|---|---|---|---|---|
| Page Title | Page Title tips for codeforces.com: Every webpage needs a unique, compelling title tag that precisely describes its content, incorporates target keywords strategically for SEO, and provides clear context for users to decide whether to click through from search engine result pages, directly impacting click-through rates. |
|---|---|
| Codeforces Length: 10 characters | |
| Meta Description | Meta Description tips for codeforces.com: Mobile users rely heavily on search result snippets; ensure your meta descriptions display perfectly on mobile devices, avoiding truncation and maintaining visual appeal on smaller screens, directly impacting mobile search performance and user experience crucially. |
| Codeforces. Programming competitions and contests, programming community Length: 72 characters | |
| Meta Keywords | Meta Keywords tips for codeforces.com: Many SEO tools and website templates still include meta keyword fields by default, but using them offers negligible value in today's competitive landscape; redirect your efforts toward optimizing click-through rates (CTRs) with compelling meta titles and descriptions to enhance visibility in search results. |
| no meta keywords data for codeforces.com 2026-08-14T04:18:22+00:00 | |
| Page Content | Page Content tips for codeforces.com: Develop well-structured web page content using clear headings H1, H2, and paragraphs for optimal readability, ensuring information is easily skimmable and presented logically to keep visitors engaged longer and reduce bounce rates on your landing pages. |
| Web Page Content Length: 113371 characters | |
| H1 Heading | H1 Heading tips for codeforces.com: The H1 header should accurately reflect the core intent of the page content, answering potential user questions directly if possible, thereby increasing the likelihood of satisfying search queries and capturing valuable organic traffic. |
| Hello, Codeforces! Count: 1 heading tag | |
| H2 Headings | H2 Headings tips for codeforces.com: Ensure your H2 text is clear, concise, and directly descriptive of the section content below it for optimal user experience and accurate crawlers interpretation. |
| no h2 headings data for codeforces.com 2026-08-14T04:18:22+00:00 | |
| H3 Headings | H3 Headings tips for codeforces.com: Create unique, descriptive H3 titles for each sub-section to prevent keyword cannibalization and ensure clear, specific content focus for both users and search engines. |
| no h3 headings data for codeforces.com 2026-08-14T04:18:22+00:00 | |
| H4 Headings | H4 Headings tips for codeforces.com: Overlooking the strategic use of H4 headers can lead to a confusing user experience and diluted content hierarchy, negatively impacting both audience comprehension and your website's potential to rank well for specific long-tail search queries associated with those sub-points. |
| Winners: Count: 1 heading tag | |
| H5-H6 Headings | H5-H6 Headings tips for codeforces.com: Consider employing H5-H6 headers primarily for detailed sub-sections within broader H4 content or for categorizing lists and tables on your webpage, enhancing structural precision. |
| Καλησπέρα, Codeforces! This will be the first rated round to feature a communication problem . Editorial Count: 3 heading tag | |
| Image ALT Attributes | Image ALT Attributes tips for codeforces.com: Regularly audit your website's image ALT tags to ensure they are descriptive for accessibility and relevant for SEO, replacing outdated or inaccurate descriptions as content or page layouts change over time. |
| no image alt attributes data for codeforces.com 2026-08-14T04:18:22+00:00 | |
| Robots.txt | Robots.txt tips for codeforces.com: Consider using the robots.txt file to block access to paginated comment pages, user profile walls, category archive pages, and other potentially infinite-content sections that could unnecessarily consume crawl budget and dilute the focus on primary content. |
| file robots.txt was found on the website | |
| XML Sitemap | XML Sitemap tips for codeforces.com: A well-maintained XML sitemap acts as a roadmap, significantly improving crawl efficiency for search engines like Google, especially on complex websites with deep architectures. |
| no xml sitemap data for codeforces.com 2026-08-14T04:18:22+00:00 | |
| Page Size | Page Size tips for codeforces.com: A faster-loading website, achieved partly by optimizing page size, encourages longer user sessions and lower exit rates, factors search engines consider when ranking sites for specific user queries. |
| page size: 111 kb | |
| Response Time | Response Time tips for codeforces.com: Caching strategies, including client-side caching (localStorage, IndexedDB) and API-level caching, dramatically improve subsequent page response times for users navigating between different pages or features. |
| response time: 0.095 sec | |
| Minify CSS | Minify CSS tips for codeforces.com: Implement CSS minification techniques, which automatically remove formatting spaces, developer notes, and unused style declarations, resulting in much smaller, faster-loading CSS files for your website visitors, directly contributing to improved Core Web Vitals and better visibility on search engine result pages. |
| Minified: //codeforces.org/s/27217/css/line-awesome.min.css Unminified: //codeforces.org/s/27217/css/font-awesome.min.css //fonts.googleapis.com/css?family=PT+Sans+Narrow:400,700&subset=latin,cyrillic //fonts.googleapis.com/css?family=Cuprum&subset=latin,cyrillic //codeforces.org/s/27217/css/prettify.css //codeforces.org/s/27217/css/clear.css //codeforces.org/s/27217/css/style.css //codeforces.org/s/27217/css/ttypography.css //codeforces.org/s/27217/css/problem-statement.css //codeforces.org/s/27217/css/second-level-menu.css //codeforces.org/s/27217/css/roundbox.css //codeforces.org/s/27217/css/datatable.css //codeforces.org/s/27217/css/table-form.css //codeforces.org/s/27217/css/topic.css //codeforces.org/s/27217/css/jquery.jgrowl.css //codeforces.org/s/27217/css/facebox.css //codeforces.org/s/27217/css/jquery.wysiwyg.css //codeforces.org/s/27217/css/jquery.autocomplete.css //codeforces.org/s/27217/css/codeforces.datepick.css //codeforces.org/s/27217/css/colorbox.css //codeforces.org/s/27217/css/jquery.drafts.css //codeforces.org/s/27217/css/community.css //codeforces.org/s/27217/markitup/skins/markitup/style.css //codeforces.org/s/27217/markitup/sets/markdown/style.css included in the page | |
| Minify JavaScript | Minify JavaScript tips for codeforces.com: Consistently minifying JavaScript assets is a fundamental best practice for website performance; smaller file sizes mean faster downloads, improved page speed scores, and consequently, better SEO positioning in search results. |
| Minified: https://codeforces.com/mathjax.codeforces.org/MathJax.js?config=TeX-AMS_HTML-full //codeforces.org/s/27217/js/moment-with-locales.min.js //codeforces.org/s/27217/js/jquery.lavalamp.min.js //codeforces.org/s/27217/js/jquery.colorbox-min.js //codeforces.org/s/27217/js/jquery.ba-bbq.js //codeforces.org/s/27217/js/clipboard.min.js //codeforces.org/s/27217/js/autosize.min.js //codeforces.org/s/27217/js/sjcl.js //codeforces.org/s/27217/js/confetti.min.js //codeforces.org/s/27217/js/purify.min.js https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015 Unminified: //codeforces.org/s/27217/js/jquery-1.8.3.js //codeforces.org/s/27217/js/prettify/prettify.js //codeforces.org/s/27217/js/pushstream.js //codeforces.org/s/27217/js/jquery.easing.min.js //codeforces.org/s/27217/js/jquery.jgrowl.js //codeforces.org/s/27217/js/jquery.swipe.js //codeforces.org/s/27217/js/jquery.hotkeys.js //codeforces.org/s/27217/js/facebox.js //codeforces.org/s/27217/js/jquery.wysiwyg.js //codeforces.org/s/27217/js/controls/wysiwyg.colorpicker.js //codeforces.org/s/27217/js/controls/wysiwyg.table.js //codeforces.org/s/27217/js/controls/wysiwyg.image.js //codeforces.org/s/27217/js/controls/wysiwyg.link.js //codeforces.org/s/27217/js/jquery.autocomplete.js //codeforces.org/s/27217/js/jquery.datepick.js //codeforces.org/s/27217/js/jquery.ie6blocker.js //codeforces.org/s/27217/js/jquery.drafts.js /scripts/00f2fc76b971b798126b988d31de8a17/en/codeforces-options.js //codeforces.org/s/27217/js/codeforces.js?v=20160131 //codeforces.org/s/27217/js/EventCatcher.js?v=20160131 and 3 more... detected during site scan | |
| Structured Data | Structured Data tips for codeforces.com: By adding specific schema types like FAQPage, you can directly answer user questions in search results, reducing bounce rates and providing immediate value before users click through. |
| no structured data data for codeforces.com 2026-08-14T04:18:22+00:00 | |
| CDN Usage | CDN Usage tips for codeforces.com: Employ a CDN to distribute your website's video content, enabling faster streaming for a global audience, reducing the load on your primary server infrastructure, and improving the overall user experience which search engines often reward |
| content is delivered via CDN | |
| SSL certificates | SSL certificates tips for codeforces.com: Google explicitly states that website security, evidenced by HTTPS (SSL encryption), is a ranking signal, meaning unsecured HTTP sites often receive lower search result placement and are less likely to be clicked on by users seeking secure interactions. |
| SSL is enabled on the website |
| Minimum Daily Unique Visitors: | 279 947 |
| Minimum Daily Visits: | 327 167 |
| Minimum Daily Page Views: | 563 268 |
| Minimum Monthly Unique Visitors: | 8 398 410 |
| Minimum Monthly Visits: | 9 815 010 |
| Minimum Monthly Page Views: | 16 898 040 |
| Minimum Yearly Unique Visitors: | 100 780 920 |
| Minimum Yearly Visits: | 117 780 120 |
| Minimum Yearly Page Views: | 202 776 480 |
| Maximum Daily Unique Visitors: | 354 150 |
| Maximum Daily Visits: | 377 760 |
| Maximum Daily Page Views: | 637 471 |
| Maximum Monthly Unique Visitors: | 10 624 500 |
| Maximum Monthly Visits: | 11 332 800 |
| Maximum Monthly Page Views: | 19 124 130 |
| Maximum Yearly Unique Visitors: | 127 494 000 |
| Maximum Yearly Visits: | 135 993 600 |
| Maximum Yearly Page Views: | 229 489 560 |
| Daily Revenue: | US$ 405 - 911 |
| Monthly Revenue: | US$ 12 150 - 27 330 |
| Yearly Revenue: | US$ 145 800 - 327 960 |
| Minimum: | US$ 218 700 |
| Maximum: | US$ 983 880 |
| Rank | Points | |
|---|---|---|
| 8 091 | 13 040 146 | |
| 8 092 | 13 040 145 | |
| 8 093 | 13 040 144 | |
| 8 094 | 13 040 143 | |
| 8 095 | 13 040 143 | |
| 8 096 | 13 040 142 | |
| 8 097 | 13 040 141 | |
| 8 098 | 13 040 140 | |
| 8 099 | 13 040 139 | |
| 8 100 | 13 040 138 | |
| 8 101 | 13 040 137 |