URL Scan Results for the page [No Straight Lines Investments | Jonathan Lansky | Substack](https://nostraightlinesinvestments.substack.com/)

Document

Links

The outgoing links identified from the page.

JavaScript Variables

Global JavaScript variables are variables that are defined outside of any function or block scope in JavaScript.

Technology

The technologies identified are present on the scanned URL.

Name	Description	Detected patterns
Analytics
Datadog https://www.datadoghq.com	Datadog is a SaaS-based monitoring and analytics platform for large-scale applications and infrastructure.	Type: scriptSrc Regex: www\.datadoghq-browser-agent\.com
Cloudflare Browser Insights https://www.cloudflare.com	Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.	Type: scriptSrc Regex: static\.cloudflareinsights\.com\/beacon(?:\.min)?\.js
Blogs
Substack https://substack.com/	Substack is an American online platform that provides publishing, payment, analytics, and design infrastructure to support subscription newsletters.	Type: headers Name: x-served-by Regex: substack
Security
HSTS https://www.rfc-editor.org/rfc/rfc6797#section-6.1	HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.	Type: headers Name: strict-transport-security Regex: (?:)
Web frameworks
Express https://expressjs.com	Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.	Type: headers Name: x-powered-by Regex: ^Express(?:$|,)
Miscellaneous
HTTP/3 https://httpwg.org/	HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.	Type: headers Name: alt-svc Regex: h3
Web servers
Express https://expressjs.com	Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.	Type: headers Name: x-powered-by Regex: ^Express(?:$|,)
Programming languages
Node.js https://nodejs.org	Node.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside a web browser.	Dependent on Express
CDN
Cloudflare https://www.cloudflare.com	Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.	Type: headers Name: cf-ray Regex: ^cloudflare$
RUM
Datadog https://www.datadoghq.com	Datadog is a SaaS-based monitoring and analytics platform for large-scale applications and infrastructure.	Type: scriptSrc Regex: www\.datadoghq-browser-agent\.com
Cloudflare Browser Insights https://www.cloudflare.com	Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.	Type: scriptSrc Regex: static\.cloudflareinsights\.com\/beacon(?:\.min)?\.js

Performance

The speed and efficiency of the scanned URL loads and displays its content.

dns

1 ms

Good

tcp

29 ms

Good

requestTime

2 ms

Good

dom

4589 ms

Poor

DNS Record

A DNS record maps a domain name to an IP address or other resource information.

SSL Certificate

An SSL certificate is a digital certificate that verifies the authenticity and encrypts the communication between a website and its visitors.

HTTP Headers

HTTP Header

An HTTP header is a component of an HTTP request or response that contains additional information about the message being sent or received.

Content Security Policy

Content Security Policy (CSP) is a security mechanism that helps prevent cross-site scripting (XSS) and other code injection attacks by specifying which content sources are allowed to be loaded on a web page.

Cookies

Cookies are small pieces of data stored on a user's web browser to track and remember information about their browsing activity on a website.