Guides
What The Number Means
Every flag an Enterramon report can raise has a page here: what the check looks for, why it costs you, and the specific change that clears it. No filler, no theory you cannot act on.
All guides
4,000 HTML Elements on One Page, and the Lag They Add
The browser has to create an object for every element on the page, remember it, and update it whenever anything changes.
A Truncated Meta Description, and the Ending Nobody Sees
Our own hosting site carries a meta description of 163 characters.
About the EnterraMon-Pro Bot
If you have seen one of the user-agents below in your server logs or WAF alerts, this page explains exactly what it is, where it comes from, and how to handle it.
CLS Above Target, When the Page Shifts Under Your Cursor
CLS above target. That is the flag when a page's Cumulative Layout Shift passes 0.1, and CLS measures how much the visible layout moves after it first appears.
Deprecated X-XSS-Protection, the Old Security Header That Should Be Off
Deprecated X-XSS-Protection enabled. That is the flag when a site sends an old security header with a value that turns a legacy browser feature on.
Do I Have IPv6?
The IPv6 test doesn't ask for a target. It checks the connection you're already using to read this page, which is what people actually want when they search "do i have ipv6" or...
Duplicate jQuery, When a Site Loads the Same Library Twice
Duplicate jQuery loaded. That is the flag when a page pulls the same JavaScript library from two different places, and it is a quieter cousin of the heavy-weight findings.
Every Plugin Adds a Script, and a Page Can Load Dozens
Every script file has to be downloaded before the browser can run it, and the browser stops to read the ones that are not marked async or deferred.
FCP Above Target, When the Page Still Shows Nothing
FCP above target. That is the flag when a page takes longer than 1.8 seconds to paint its first content, and FCP stands for First Contentful Paint, the first moment the visitor...
Heavy Page Weight, What Megabytes of Website Cost Your Visitors
Heavy total page weight. That is the flag when a page transfers more than about 2,000KB before it is done, and it is one of the most common performance findings we see on real...
How to run a test on Enterramon
Running an Enterramon Test is simple, however there are a few thing to consider.
HSTS Not Enabled, and Why That Leaves Your Visitors Open to Downgrade Attacks
HSTS not enabled, high severity. That is the flag when a site does not send the Strict-Transport-Security header, and it is one of the most common ones we see.
LCP Above Target, Why the Main Content Takes Too Long to Appear
LCP above target. That is the flag when the largest piece of content on a page takes longer than 2.5 seconds to appear, and LCP stands for Largest Contentful Paint, one of the...
Legacy Image Formats, and the Credit You May Already Have
Four images on our own site are still PNG files, and the report lists them as legacy image formats.
Low Cacheability, and the Return Visit You Are Paying For
Roughly two thirds of the static files on our own site carry caching headers.
Missing Alt Text, and the Images That Are Meant to Be Silent
One page we test carries eight images, and four of them have no alt attribute at all.
Missing Meta Description, and the Text Google Borrows
A page with no meta description has handed the snippet over to the search engine.
Missing or Multiple H1 Headings, and the Outline They Break
More pages in our reports carry several H1 headings than carry none.
No Structured Data, Why JSON-LD Helps Search Engines Know Your Pages
No structured data (JSON-LD). That is the flag when a page carries no machine-readable description of what it is, and it shows up in the SEO section of an Enterramon report.
No Text Compression, and the Switch Nobody Turned On
One site we watch sends every page with the compression switch off.
Oversized Assets, When One File Outweighs the Whole Page
Heavy total page weight. That is the flag when a page transfers more than about 2,000KB before it is done, and it is one of the most common performance findings we see on real...
Search Engines Find Your Pages Without an XML Sitemap
A sitemap is not a ranking device. It is a list you hand a crawler so it does not have to find your pages by following links from somewhere else.
TBT Above Target, When JavaScript Holds the Page Hostage
TBT above target. That is the flag when a page's Total Blocking Time passes 200 milliseconds, and TBT measures how long the main thread is too busy to respond to the visitor.
Third-Party Scripts, When Most of the Page Is Not Yours
More than half of what a visitor downloads never touches your server.
TLS Certificate Expiring, the Countdown That Can Take Your Site Down
TLS certificate expiring soon. That is the flag when a site's certificate has fewer than thirty days left, and it is the one security finding in the report with a hard deadline...
TLS Chain Not Validating, When Your Certificate Checks Out but Does Not Chain
TLS chain does not fully validate. That is the flag when a site presents a working certificate that browsers can read, but the certificate chain cannot be verified back to a...
Too Many CSS Files, What 23 Stylesheets Do to a Page Load
A stylesheet has to download and be read before the browser paints the content it styles.
TTFB Above Target, The Long Pause Before the Page Starts
Nothing has loaded yet when TTFB runs, the browser is still waiting for the server to answer, and that wait is Time to First Byte.
Understanding the Report: How to Read an Enterramon Test
Table of Contents The four scores, and how they're actually calculated Performance (35%) Security (25%) Caching / Delivery (20%) SEO (20%) And the one that doesn't count yet:...
Using the Enterramon Broken Link Checker
Drop in a domain and the tool crawls up to 35 pages starting from your homepage, following the same links a visitor or a search bot would run into.
Using the Enterramon DNS Tool
DNS propagation DNS propagation isn't instant and it isn't uniform.
Using the Enterramon Domain Search Tool
The Enterramon domain search tool checks names against the live registry and comes back with real prices in a few seconds.
Using the Enterramon MAC Address Lookup
What is a MAC address lookup Every network device, a router, a laptop's wifi card, a smart TV, a phone, ships with a MAC address burned into its hardware.
Using the Enterramon Ping Tool
What is ping Ping is the oldest, simplest diagnostic on the internet, and it still does its one job well.
Using the Enterramon Robots.txt Tester
What is robots.txt robots.txt is a plain text file sitting at the root of a domain, something like example.com/robots.txt , and it's the first thing most well behaved crawlers...
Using the Enterramon Server Check
What is a Server Check A domain name resolving is not the same thing as a server actually answering.
Using the Enterramon Traceroute
What is traceroute Traceroute is what you reach for when ping has already told you something is slow, but not why.
What Crawlers Do Without a robots.txt, and Why It Matters
A missing robots.txt is not the emergency the card's name suggests.
Why Your Site Needs a Content-Security-Policy and How to Add One
Your Enterramon report came back with a red one.
X-Content-Type-Options nosniff, Stopping Uploads From Becoming Scripts
No X-Content-Type-Options. That is the flag when a site does not send the nosniff header, and it is the quietest card in the security section of an Enterramon report.
X-Frame-Options and Clickjacking Protection, What the Header Does and How to Add It
No X-Frame-Options or frame-ancestors. That is the flag when a site does not tell browsers who is allowed to embed it in a frame.
Looking for a tool, or a walk-through?
These guides explain findings. If you want to run a test, or read the step-by-step guide for one of our tools, those live in their own sections.
