leo.org

HTTPS HTTP/2 Gzip Crawled in 47,294ms · June 27, 2026 22:28 UTC

leo.org Website Overview & Technology Report

🤖 AI Summary
We performed a comprehensive analysis of leo.org on 2026-06-27. The website returned an HTTP 200 status code with a server response time of 15428ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 100 KB, and the site is served behind a CDN (Content Delivery Network). 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 15/100 (poor). The following security headers are properly configured: X-Frame-Options. However, the site is missing Content-Security-Policy, Strict-Transport-Security (HSTS), 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 1 technologies across 1 categories powering leo.org. The detected stack includes Webpack. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, leo.org receives an overall trust score of 56/100, classified as "Caution Advised".
56
/ 100
Trust Score
15
/ 100
Security Headers
HTTP Response
Status200 OK
Response Time15428ms
ProtocolHTTP/2
Page Size100 KB
CompressionGzip
Compression Savings~60.0%
CDNYes ✓
Servercloudflare
Total Requests346
3rd Party Domains8
Redirect2 hop(s)
Detected Technologies (1)
🔨 Webpack
Security Headers
Content-Security-Policy
Not set
Strict-Transport-Security (HSTS)
Not set
X-Frame-Options
Set ✓
X-Content-Type-Options
Not set
Referrer-Policy
Not set
Permissions-Policy
Not set
SSL Certificate
IssuerGoogle Trust Services
Issuer FullcountryName=US, organizationName=Google Trust Services, commonName=WE1
SubjectcommonName=leo.org
Type
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_256_GCM_SHA384
Algorithm
Issued
Expires— (? days)
SANs

leo.org Trust Score & Safety Analysis

🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, leo.org receives a trust score of 56/100, which places it in the "Caution Advised" 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 SPF (Sender Policy Framework) email authentication preventing email spoofing. Areas of concern include: the absence of a Content-Security-Policy header, which leaves the site more vulnerable to cross-site scripting (XSS) attacks, missing Referrer-Policy, potentially leaking URL information to third parties, 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 leo.org 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.
56
/ 100
Caution Advised
Trust Signals
Valid HTTPS
SPF configured
⚠️ DNSSEC not enabled
⚠️ Missing Content-Security-Policy
⚠️ Missing Referrer-Policy
Blacklist Checks (8/8 clean)
Google Safe Browsing clean
Phishtank clean
Urlhaus clean
Openphish clean
Dnsfilter clean
Spamhaus Dbl clean
Surbl clean
Virustotal clean

leo.org Technology Stack & Detected Technologies

🤖 AI Summary
Our technology detection engine scanned leo.org and identified 1 distinct technologies across 1 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. Build Tool: Webpack — bundles and optimizes the JavaScript and CSS assets for leo.org.
Build Tool
🔨 Webpack(95%)

leo.org Performance, Speed & Core Web Vitals

🤖 AI Summary
leo.org delivers its homepage in 15428ms (server response time), which is considered slow by industry standards. The total page weight is 100 KB, and we detected 346 resource requests loading assets from 8 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 2 JavaScript files are minified. Minifying the remaining 5 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. The site is served through a Content Delivery Network (CDN), which caches static assets at edge servers around the world. This means visitors from different geographic regions receive content from the nearest edge server, significantly reducing latency. CDN usage is particularly important for websites with a global audience, as it can reduce page load times by 40-60% for distant visitors. From an environmental perspective, each page view of leo.org produces approximately 0.05g 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 100 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for leo.org. 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.
Core Web Vitals data not available
Requires CrUX API key configuration
Carbon Footprint
CO₂ per page view0.05g
RatingA
Page Weight & Optimization
HTML Size100 KB
CompressionGzip
Compression Savings~60.0%
CDNYes ✓
Total Requests346
3rd Party Domains8
CSS Minified0/3
JS Minified0/2

leo.org DNS Records, Email Authentication & Domain Registration

🤖 AI Summary
leo.org resolves to the IPv4 address 172.66.170.29 and also supports IPv6 (2606:4700:10::ac42:aa1d), demonstrating modern network infrastructure readiness. The domain has 2 A record(s) configured. The domain name system is managed by 2 name servers: dion.ns.cloudflare.com and val.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 leo.org is handled by leo.org with 1 MX records configured: mx.leo.org. 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 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 leo.org. 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 3 active subdomains for leo.org: admin.leo.org, blog.leo.org, and www.leo.org. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
A
172.66.170.29
104.20.27.1
AAAA
2606:4700:10::ac42:aa1d
NS
dion.ns.cloudflare.com
val.ns.cloudflare.com
MX
mx.leo.org
Email & Authentication
SPF
DMARC p=—
DKIM
DNSSEC
MX Providerleo.org
Registrar
Organisation
Country
Contact
Registered
Expires
Domain Age
IPv6 SupportYes ✓
Subdomains (3 found)
admin.leo.org blog.leo.org www.leo.org

leo.org Page Content, Images & Accessibility

🤖 AI Summary
The homepage of leo.org contains 1,143 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 13 H2 headings, 4 H3 headings, 3 H4 headings, 3 H5, and 0 H6 headings. The page includes 113 images. All images have proper alt text attributes ✓, which is excellent for both accessibility (screen readers) and SEO (search engines can understand image content). The link structure consists of 194 internal links pointing to other pages on the same domain and 9 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 2 external JavaScript files, 3 CSS stylesheets, and 0 iframes on the page. The site implements the following web standards and features: Schema.org structured data (Organization) and Progressive Web App (PWA) manifest (enabling app-like installation). Notable missing features: XML Sitemap and robots.txt. Adding these could improve search engine discoverability and rich result eligibility. The website has social media presence across 2 platforms: Facebook (@dict.leo.org) and Instagram (@leo_org_ihr_sprachangebot). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.
1,143
Words
113
Images
100%
Alt Text Score
100
Page Size (KB)
Content Structure
H1Home
H2 Tags13
H3 Tags4
H4 Tags3
H5 Tags3
H6 Tags0
Internal Links194
External Links9
Assets & Features
JavaScript Files2
JS Minified0/2
CSS Files3
CSS Minified0/3
Iframes0
Images113
Missing Alt0
SitemapNo
Robots.txtNo
PWAYes ✓
AMPNo
RSS FeedNo
Schema.org Types
Organization
Social Media Presence
Facebook: @dict.leo.orgInstagram: @leo_org_ihr_sprachangebot

leo.org SEO Analysis, Meta Tags & Open Graph

🤖 AI Summary
The title tag for leo.org is well-optimized at 34 characters: "LEO.org - Ihr Sprachangebot im Web". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation. The meta description is 130 characters (well-optimized): "LEO.org: Ihr Sprachexperte im Internet - mit Online-Wörterbüchern, Forum, Vokabeltrainer und Sprachkursen. Natürlich auc...". 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://dict.leo.org/englisch-deutsch/, preventing duplicate content issues, the page language is declared as de, and a favicon is configured. No Open Graph tags are configured. When someone shares a link to leo.org on social media, the platform will have to guess the title, description, and image — often producing unattractive or inaccurate previews. Adding OG tags is essential for social media marketing. The site implements Schema.org structured data with the following types: Organization. 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 66 terms including LEO, German, Deutsch, English, and Englisch. 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.
Google SERP Preview
LEO.org - Ihr Sprachangebot im Web
https://leo.org
LEO.org: Ihr Sprachexperte im Internet - mit Online-Wörterbüchern, Forum, Vokabeltrainer und Sprachkursen. Natürlich auch als App.
Meta Tags
TitleLEO.org - Ihr Sprachangebot im Web...
Title Length34 chars
Meta Desc Length130 chars
H1Home
Languagede
Canonicalhttps://dict.leo.org/englisch-deutsch/
Meta Robotsnot set
Meta KeywordsLEO, German, Deutsch, English, Englisch, Dictionary, Alleman...
Schema.org & Social
Schema TypesOrganization
OG Type
OG ImageNot set
Twitter Card
FaviconSet ✓