www.htmlyse.com - Home

Test DNS, SSL/TLS, HTTP and HTML

Test results demos


What we are testing?

Domain Name System (DNS)

Your visit to a website on the Internet begins with a DNS request. Your browser sends a query to the Domain Name Server requesting the IP address of the website you are visiting. If the resolution of the IP address fails for some reason, you cannot connect to that website. Our DNS scanner helps you identify problems and achieve a good DNS server configuration. You can analyse the following DNS lookups: SOA, NS, A, AAAA, CAA, MX, TXT and CNAME.

Secure Sockets Layer (SSL) and Transport Layer Security (TLS)

SSL and TLS are cryptographic protocols that provide communications security over a computer network. SSL is a broken protocol and should NOT be used in modern secure environments. The TLS protocol provides you privacy and data integrity between your browser and the server you are connecting. By using TLS, all data between your browser and the server travels over the Internet in an encrypted state, and nobody can access or modify it. However, a poorly configured SSL / TLS server that uses any broken protocol, broken key exchange or broken encryption can give access to that data. The TLS report we provide helps you tune-up your server to modern security requirements, and detect issues in your server configuration. We analyse the SSL/TLS protocols used by server, NPN, ALPN, perfect forward secrecy (PFS), used elliptic curves, TLS extensions, server certificates, certificate transparency, configured ciphers and their strength, browser simulations and many more. We also scan your server for some known SSL/TLS vulnerabilities, such as Heartbleed, CCS, Ticketbleed, ROBOT, CRIME, BREACH, POODLE, TLS_FALLBACK_SCSV, SWEET32, FREAK, DROWN, LOGJAM, BEAST, LUCKY13 etc.

HTTP Security Headers

HTTP security headers provide another layer of security for your website. These headers can restrict modern browsers from some known vulnerabilities. HTTP security headers can help strengthen the security of your website and using them is highly recommended. We check your website for the existence of the following security headers: Content-Security-Policy, Expect-CT, Public-Key-Pins (deprecated in Chrome), Referrer-Policy, Strict-Transport-Security, X-Content-Type-Options, X-Frame-Options, X-XSS-Protection and the new Feature-Policy header.

HTML Warnings and Errors

Clean HTML is the foundation of a high performance website. Dirty and poorly written HTML code increases the CPU usage and time required to read, interpret and render the web page, because browsers are forced to guess the meaning of the code. For mobile devices, the use of the battery also increases. Our HTML code cleaner corrects and cleans HTML documents by correcting markup errors and updating the legacy code to modern standards. However, we recommend that you manually examine and test the produced code before using it on your production website.