Website review module21.com
Module 21 - An intelligent system for enriching indoor air with oxygen | Module 21
Generated on April 02 2026 03:47 AM
Old data? UPDATE !
The score is 60/100
SEO Content
Title
Module 21 - An intelligent system for enriching indoor air with oxygen | Module 21
Length : 82
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Description
Introducing Module21 — an innovative device that enriches the air inside your home or office with oxygen. It purifies the air from pollutants, enhances its quality and oxygen content, and creates a healthier, more comfortable environment for living and working.
Length : 262
Ideally, your meta description should contain between 70 and 160 characters (spaces included). Use this free tool to calculate text length.
Keywords
Module 21, Oxygen, health
Good, your page contains meta keywords.
Og Meta Properties
Good, your page take advantage of Og Properties.
| Property | Content |
|---|---|
| image | https://module21.com/badge.png |
| type | website |
| image:width | 1200 |
| image:height | 630 |
| title | Module 21 - An intelligent system for enriching indoor air with oxygen |
| description | Introducing Module21 — an innovative device that enriches the air inside your home or office with oxygen. It purifies the air from pollutants, enhances its quality and oxygen content, and creates a healthier, more comfortable environment for living and working. |
| url | https://module21.com/ |
| site_name | Module 21 |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 12 | 43 | 0 | 0 | 0 |
- [H1] An intelligent system for enriching indoor air with oxygen
- [H2] Oxyness: More Than Oxygen
- [H2] Consequences of Oxygen Deficiency for the Human Body
- [H2] Oxygen problems in megacities
- [H2] The Solution — Module21
- [H2] 3 Steps of Device Operation
- [H2] Module — A New Level of Life and Health with Perfect Air
- [H2] Module21 for Your Home
- [H2] Module21 for Your Business
- [H2] II.A New Standard of Customer Care:
- [H2] Trust and Credibility
- [H2] More Valuable Information
- [H2] If you have any questions — please ask them via the feedback form
- [H3] The Four Pillars of Oxyness
- [H3] Freshness
- [H3] Happiness
- [H3] Effectiveness
- [H3] Wellness
- [H3] Reduced concentration and focus
- [H3] Weakened immunity
- [H3] Chronic fatigue
- [H3] Respiratory problems
- [H3] Heart and vascular strain
- [H3] Dense urban development blocks natural air circulation, creating stagnant zones
- [H3] A lack of green spaces deprives cities of natural “factories” that produce oxygen
- [H3] Pollution from vehicles, industry, and heating systems saturates the atmosphere with harmful substances, displacing oxygen
- [H3] Sealed indoor spaces with artificial ventilation further reduce access to fresh air, lowering indoor oxygen levels
- [H3] Outdoor Installation
- [H3] Oxygen Enrichment
- [H3] oxyness Control
- [H3] A Brand-New Category of Devices
- [H3] Innovative Technology
- [H3] Not an Air Conditioner, Not Just a Filter
- [H3] Control panel or mobile app
- [H3] 7 Reasons to Install Module21 at Home:
- [H3] Improved Breathing
- [H3] Healthier Sleep
- [H3] Immune Support
- [H3] Stress Reduction
- [H3] Energy and Vitality
- [H3] Cleaner Indoor Air
- [H3] Enhanced Brain Function
- [H3] I.Boost Employee Productivity:
- [H3] Productivity
- [H3] Fewer Sick Days
- [H3] Health
- [H3] Energy
- [H3] Work Environment
- [H3] Integration into Existing Ventilation Systems
- [H3] High Performance
- [H3] Energy Efficiency
- [H3] Modular Design
- [H3] Low Operating Costs
- [H3] Great Oxidation Event: How Oxygen Transformed Earth’s Atmosphere and Made Complex Life Possible
- [H3] Dubai Indoor Air Quality: The Performance Factor Behind Focus, Learning, and Productivity
- [H3] The Silent Variable in Hot Cities: Why Oxygen Matters More Than We Think
Images
We found 41 images on this web page.
2 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.
Text/HTML Ratio
Ratio : 3%
This page's ratio of text to HTML code is below 15 percent, this means that your website probably needs more text content.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Great, there are no Iframes detected on this page.
SEO Links
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 16 links including 0 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| B2С solutions | Internal | Passing Juice |
| B2B solutions | Internal | Passing Juice |
| Blog | Internal | Passing Juice |
| About us | Internal | Passing Juice |
| Contacts | Internal | Passing Juice |
| TG | External | Passing Juice |
| WA | External | Passing Juice |
| LI | External | Passing Juice |
| Cookies Policy | Internal | Passing Juice |
| Privacy Policy | Internal | Passing Juice |
| ChatGPT | External | Passing Juice |
| Grok | External | Passing Juice |
| Perplexity | External | Passing Juice |
| DeepSeek | External | Passing Juice |
| Google Gemini | External | Passing Juice |
| Claude | External | Passing Juice |
SEO Keywords
Keywords Cloud
air indoor module21 quality home more into system oxygen levels
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| oxygen | 21 |  |
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| air | 19 | |
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| module21 | 11 | |
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| system | 8 | |
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| more | 8 | |
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Usability
Url
Domain : module21.com
Length : 12
Favicon
Great, your website has a favicon.
Printability
We could not find a Print-Friendly CSS.
Language
Good. Your declared language is en.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Warning! At least one email address has been found in the plain text. Use free antispam protector to hide email from spammers.
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
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Excellent, your website doesn't use nested tables. |
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Too bad, your website is using inline styles. |
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Too bad, your website has too many CSS files (more than 4). |
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Perfect, your website has few JavaScript files. |
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Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
Optimization
XML Sitemap
Great, your website has an XML sitemap.
| https://module21.com/sitemap.xml |
Robots.txt
https://module21.com/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
We didn't detect an analytics tool installed on this website.
Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.
PageSpeed Insights
Device
Categories
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