brasilescola.uol.com.br

We performed a comprehensive analysis of brasilescola.uol.com.br on 2026-06-28. The website returned an HTTP 200 status code with a server response time of 1871ms. The page is served over HTTP/1.1 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 166 KB. Warning: The website does not have a valid SSL certificate. Visitors may see security warnings in their browser, and data transmitted to and from this website is not encrypted. The security headers analysis reveals a score of 50/100 (moderate). The following security headers are properly configured: Strict-Transport-Security (HSTS), X-Content-Type-Options, and Referrer-Policy. However, the site is missing Content-Security-Policy, X-Frame-Options, and Permissions-Policy, which could expose the site and its users to cross-site scripting (XSS), clickjacking, and other web-based attacks. Our technology detection scan identified 4 technologies across 3 categories powering brasilescola.uol.com.br. The detected stack includes React, Google Analytics 4, Microsoft Clarity, and YouTube Embed. The UI is built with React. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, brasilescola.uol.com.br receives an overall trust score of 62/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, brasilescola.uol.com.br receives a trust score of 62/100, which places it in the "Likely Safe" category. This score is calculated by evaluating multiple factors including SSL certificate validity, domain registration history, email authentication protocols, security header configuration, and blacklist status across major threat intelligence databases. The analysis identified several positive trust signals: a valid HTTPS connection protecting data in transit and HSTS (HTTP Strict Transport Security) enforcement preventing protocol downgrade attacks. Areas of concern include: the absence of a Content-Security-Policy header, which leaves the site more vulnerable to cross-site scripting (XSS) attacks, no X-Frame-Options header, which could allow the site to be embedded in malicious iframes (clickjacking), the domain's WHOIS information is hidden behind a privacy service, making it harder to verify the owner's identity, and DNSSEC is not enabled, leaving DNS queries vulnerable to spoofing attacks. While these issues don't necessarily indicate malicious intent, they represent areas where the website's security posture could be improved. We checked brasilescola.uol.com.br against 8 major blacklist databases including Google Safe Browsing, Phishtank, Urlhaus, Openphish, Dnsfilter, Spamhaus Dbl, Surbl, and Virustotal. The domain passed all 8 checks with a clean status, meaning it has not been flagged for phishing, malware distribution, spam, or other malicious activities by any of the tested threat intelligence providers.

Our technology detection engine scanned brasilescola.uol.com.br and identified 4 distinct technologies across 3 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. UI Library: React — handles the user interface rendering and component management for brasilescola.uol.com.br. Analytics: Google Analytics 4 and Microsoft Clarity — tracks visitor behavior and provides traffic insights for brasilescola.uol.com.br. Video: YouTube Embed — provides video hosting and playback for brasilescola.uol.com.br. We also extracted the following tracking identifiers: Google Analytics 4 Measurement ID G-C2ES4F6PRM. These IDs can be used to identify other websites operated by the same organization.

brasilescola.uol.com.br delivers its homepage in 1871ms (server response time), which is considered somewhat slow by industry standards. The total page weight is 166 KB, and we detected 324 resource requests loading assets from 9 third-party domains. A high number of third-party domains can significantly impact page load time due to additional DNS lookups and TLS handshakes required for each domain. The website uses Gzip compression for text-based assets, achieving an estimated 60.0% reduction in transfer size. This reduces bandwidth usage and improves page load times, especially for visitors on slower connections. Asset minification status: 0 out of 1 CSS files and 0 out of 6 JavaScript files are minified. Minifying the remaining 7 unminified file(s) could further reduce page weight by 10-30% for those assets. Minification is a best practice that reduces download sizes without affecting functionality. From an environmental perspective, each page view of brasilescola.uol.com.br produces approximately 0.08g of CO₂, earning a carbon rating of A. This places the website among the cleanest on the web, demonstrating efficient use of server resources and optimized content delivery. For reference, the average web page produces about 0.5g of CO₂ per page view. The page weight of 166 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for brasilescola.uol.com.br. This typically means the site doesn't have enough real-world Chrome user traffic to generate statistically significant field data, or the domain is not included in the CrUX dataset. Core Web Vitals (LCP, INP, CLS) are important Google ranking factors that measure real user experience.

brasilescola.uol.com.br resolves to the IPv4 address 200.147.100.63 and also supports IPv6 (2804:49c:3102:405:ffff:ffff:ffff:10), demonstrating modern network infrastructure readiness. The domain has 1 A record(s) configured. SPF is not configured, meaning any server could potentially send emails pretending to be from this domain. This is a significant email security concern. DMARC is not configured, leaving the domain vulnerable to email spoofing and phishing attacks that impersonate this domain. DKIM was not detected. Without DKIM, recipients cannot cryptographically verify that emails claiming to be from this domain are authentic. DNSSEC is not enabled for brasilescola.uol.com.br. While not critical for most websites, DNSSEC adds an important security layer by ensuring DNS responses haven't been tampered with during transit. Enabling DNSSEC is recommended for domains handling sensitive data or financial transactions. Our subdomain enumeration scan discovered 4 active subdomains for brasilescola.uol.com.br: app.brasilescola.uol.com.br, dev.brasilescola.uol.com.br, m.brasilescola.uol.com.br, and static.brasilescola.uol.com.br. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

The homepage of brasilescola.uol.com.br contains 1,736 words of visible text content. This is a substantial amount of content that provides good opportunities for search engine indexing. The page is structured with 5 H2 headings, 46 H3 headings, 0 H4 headings. The page includes 86 images. 29 images (34%) are missing alt text attributes, which is a significant concern for both accessibility and SEO. Screen readers rely on alt text to describe images to visually impaired users, and search engines use alt text to understand image content. Only 66% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 119 internal links pointing to other pages on the same domain and 106 external links pointing to third-party websites. The high number of internal links suggests a well-interconnected site structure, which helps search engines discover and crawl all pages efficiently. There are 6 external JavaScript files, 1 CSS stylesheets, and 1 iframes on the page. The site implements the following web standards and features: XML Sitemap (helps search engines discover all pages), Schema.org structured data (Organization, SearchAction, and WebSite), and RSS feed for content syndication. Notable missing features: robots.txt. Adding these could improve search engine discoverability and rich result eligibility. We detected the following payment methods accepted on brasilescola.uol.com.br: Visa. Offering multiple payment options including credit cards and digital wallets improves customer trust and can increase conversion rates. The website has social media presence across 5 platforms: Facebook (@brasilescola), Twitter (@brasilescola), Instagram (@brasilescolaoficial), Youtube (@brasilescola), and Tiktok (@brasilescola). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

The title tag for brasilescola.uol.com.br is well-optimized at 52 characters: "Brasil Escola - O maior portal de educação do Brasil". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation. The meta description is 162 characters (slightly long): "O Brasil Escola é o maior portal de educação do país. São mais de 100 mil conteúdos do Ensino Fundamental, Médio e prepa...". Google typically displays up to 155-160 characters of the meta description in search results. A compelling meta description with a clear call-to-action can significantly improve click-through rates from search results. The canonical url is correctly set to https://brasilescola.uol.com.br, preventing duplicate content issues, the page language is declared as pt-br, and a favicon is configured. Open Graph meta tags are configured with 1/4 recommended fields: OG title ("Brasil Escola - O maior portal de educação do Brasil..."), These tags control how the page appears when shared on Facebook, LinkedIn, and other social media platforms that support the Open Graph protocol. The site implements Schema.org structured data with the following types: Organization, SearchAction, and WebSite. Structured data helps search engines understand the page content and can enable rich results (featured snippets, knowledge panels, star ratings) in Google search results, which can significantly increase click-through rates. The meta keywords tag contains 4 terms including Educação, Vestibular, Enem, and Inscrições.. Note: Google has officially confirmed that it does not use the meta keywords tag as a ranking signal. However, some other search engines (Bing, Yandex) may still reference it.