optimizely.com

We performed a comprehensive analysis of optimizely.com on 2026-06-29. The website returned an HTTP 200 status code with a server response time of 16796ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 388 KB. The website uses a secure HTTPS connection with a valid SSL certificate issued by Let's Encrypt (DV type). The connection is encrypted using TLS 1.3 with the TLS_AES_128_GCM_SHA256 cipher suite and sha256WithRSAEncryption signature algorithm. The certificate covers 1 domain(s) (Subject Alternative Names) and expires on 2026-09-19, which is 82 days from now. The security headers analysis reveals a score of 40/100 (below average). The following security headers are properly configured: Content-Security-Policy and Strict-Transport-Security (HSTS). However, the site is missing X-Frame-Options, X-Content-Type-Options, Referrer-Policy, 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 6 technologies across 6 categories powering optimizely.com. The detected stack includes Next.js chunks, React, Vite, Google Tag Manager, Optimizely, and reCAPTCHA v3. The site uses Next.js as its primary framework (version chunks). The UI is built with React. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, optimizely.com receives an overall trust score of 79/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, optimizely.com receives a trust score of 79/100, 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, HSTS (HTTP Strict Transport Security) enforcement preventing protocol downgrade attacks, a valid SSL certificate issued by Let's Encrypt with 82 days until expiration, SPF (Sender Policy Framework) email authentication preventing email spoofing, DMARC email authentication with a reject policy — the strongest available setting, DNSSEC providing authenticated DNS responses, and a well-established domain registered for over 16.5 years, indicating long-term commitment and legitimacy. Areas of concern include: no X-Frame-Options header, which could allow the site to be embedded in malicious iframes (clickjacking), missing Referrer-Policy, potentially leaking URL information to third parties, and the domain's WHOIS information is hidden behind a privacy service, making it harder to verify the owner's identity. While these issues don't necessarily indicate malicious intent, they represent areas where the website's security posture could be improved. We checked optimizely.com 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. The domain is registered through GoDaddy.com, LLC based in US, with a registration date of 2010-01-11 and expiration date of 2027-01-11.

Our technology detection engine scanned optimizely.com and identified 6 distinct technologies across 6 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. Framework: Next.js (version chunks) — provides the application framework and routing for optimizely.com. UI Library: React — handles the user interface rendering and component management for optimizely.com. Build Tool: Vite — bundles and optimizes the JavaScript and CSS assets for optimizely.com. Tag Manager: Google Tag Manager — manages marketing and analytics tags without code changes for optimizely.com. A/B Testing: Optimizely — enables experimentation and conversion optimization for optimizely.com. Security: reCAPTCHA v3 — provides security features like bot detection and CAPTCHA for optimizely.com. We also extracted the following tracking identifiers: Google Tag Manager container GTM-59ZNLHC. These IDs can be used to identify other websites operated by the same organization.

optimizely.com delivers its homepage in 16796ms (server response time), which is considered slow by industry standards. The total page weight is 388 KB, and we detected 217 resource requests loading assets from 1 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 3 CSS files and 0 out of 31 JavaScript files are minified. Minifying the remaining 34 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 optimizely.com produces approximately 0.19g of CO₂, earning a carbon rating of B. 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 388 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for optimizely.com. 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.

optimizely.com resolves to the IPv4 address 216.150.16.1, but does not support IPv6. IPv6 adoption is increasingly important as IPv4 address space becomes exhausted, and some ISPs and regions are transitioning to IPv6-only connectivity. The domain has 2 A record(s) configured. The domain name system is managed by 2 name servers: doug.ns.cloudflare.com and harmony.ns.cloudflare.com. Having 2 name servers provides good redundancy — if one fails, the others can continue serving DNS queries. The choice of name servers often indicates the DNS hosting provider or CDN service being used. Email for optimizely.com is handled by mimecast.com with 2 MX records configured: de-smtp-inbound-1.mimecast.com and de-smtp-inbound-2.mimecast.com. Multiple MX records provide failover redundancy — if the primary mail server is unavailable, email will be routed to the next available server. SPF (Sender Policy Framework) is configured, which specifies which mail servers are authorized to send email on behalf of this domain. This helps prevent email spoofing and improves email deliverability. DMARC (Domain-based Message Authentication, Reporting and Conformance) is configured with a reject policy — the strongest setting, instructing receiving servers to reject unauthorized emails entirely. DKIM was not detected. Without DKIM, recipients cannot cryptographically verify that emails claiming to be from this domain are authentic. DNSSEC is enabled for optimizely.com, providing an additional layer of security by cryptographically signing DNS records. This prevents DNS cache poisoning and man-in-the-middle attacks that could redirect visitors to malicious websites. The domain is registered through GoDaddy.com, LLC (US). It was first registered on 2010-01-11 and is set to expire on 2027-01-11, making it 16.5 years old. Our subdomain enumeration scan discovered 6 active subdomains for optimizely.com: api.optimizely.com, app.optimizely.com, blog.optimizely.com, cdn.optimizely.com, mail.optimizely.com, and www.optimizely.com. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

The homepage of optimizely.com contains 655 words of visible text content. This is a moderate amount of content. The page is structured with 7 H2 headings, 29 H3 headings, 0 H4 headings. The page includes 76 images. 48 images (63%) 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 37% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 52 internal links pointing to other pages on the same domain and 3 external links pointing to third-party websites. There are 31 external JavaScript files, 3 CSS stylesheets, and 0 iframes on the page. The site implements the following web standards and features: XML Sitemap (helps search engines discover all pages), robots.txt (controls search engine crawling behavior), and Progressive Web App (PWA) manifest (enabling app-like installation). Notable missing features: Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility. We detected the following payment methods accepted on optimizely.com: Visa. Offering multiple payment options including credit cards and digital wallets improves customer trust and can increase conversion rates.

The title tag for optimizely.com is well-optimized at 58 characters: "Optimizely - AI to create and optimize digital experiences". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation. The meta description is 116 characters (well-optimized): "Everything marketing and digital teams need to create content fast, test and personalize, and prove business impact.". 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://www.optimizely.com, preventing duplicate content issues, the page language is declared as en, and a favicon is configured. Open Graph meta tags are configured with 4/4 recommended fields: OG title ("Optimizely - AI to create and optimize digital experiences..."), OG description, OG image (social sharing thumbnail), OG type (website). These tags control how the page appears when shared on Facebook, LinkedIn, and other social media platforms that support the Open Graph protocol. A Twitter Card of type summary_large_image is configured, which controls how links appear when shared on Twitter/X. The "summary_large_image" type displays a large image preview, which typically generates higher engagement rates than the basic card type.