Generated on March 30 2026 08:09 AM
Old data? UPDATE !
The score is 56/100
Title
Game development | MDN
Length : 22
Perfect, your title contains between 10 and 70 characters.
Description
Gaming is one of the most popular computer activities. New technologies are constantly arriving to make it possible to develop better and more powerful games that can be run in any standards-compliant web browser.
Length : 213
Ideally, your meta description should contain between 70 and 160 characters (spaces included). Use this free tool to calculate text length.
Keywords
Very bad. We haven't found meta keywords on your page. Use this free online meta tags generator to create keywords.
Og Meta Properties
This page does not take advantage of Og Properties. This tags allows social crawler's better structurize your page. Use this free og properties generator to create them.
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 6 | 0 | 0 | 0 | 0 |
Images
We found 0 images on this web page.
Good, most or all of your images have alt attributes.
Text/HTML Ratio
Ratio : 9%
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.
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
We have detected underscores in your URLs. You should rather use hyphens to optimize your SEO.
In-page links
We found a total of 92 links including 6 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| Develop web games | Internal | Passing Juice |
| Guides | Internal | Passing Juice |
| Examples | Internal | Passing Juice |
| See also | Internal | Passing Juice |
| Learn web development | Internal | Passing Juice |
| Anatomy of a video game | Internal | Passing Juice |
| Introduction to game development for the Web | Internal | Passing Juice |
| Publishing games | Internal | Passing Juice |
| Techniques for game development | Internal | Passing Juice |
| Tools for game development | Internal | Passing Juice |
| Tutorials | Internal | Passing Juice |
| Game Programming Patterns | External | Passing Juice |
| Gamedev.js Weekly | External | Passing Juice |
| HTML5 Game Engine | External | Passing Juice |
| Tuts+ Game Development | External | Passing Juice |
| HTML5 Gamedev Starter | External | Passing Juice |
| js13kGames | External | Passing Juice |
| Mozilla Hacks Blog | External | Passing Juice |
| Games section on wiki.mozilla.org | External | Passing Juice |
| MDN contributors | Internal | Passing Juice |
| Games | Internal | Passing Juice |
| asm.js | Internal | Passing Juice |
| Canvas | Internal | Passing Juice |
| CSS | Internal | Passing Juice |
| Full screen | Internal | Passing Juice |
| Gamepad | Internal | Passing Juice |
| IndexedDB | Internal | Passing Juice |
| JavaScript | Internal | Passing Juice |
| Pointer Lock | Internal | Passing Juice |
| SVG | Internal | Passing Juice |
| Typed Arrays | Internal | Passing Juice |
| Web Audio | Internal | Passing Juice |
| WebGL | Internal | Passing Juice |
| WebRTC | Internal | Passing Juice |
| WebSockets | Internal | Passing Juice |
| WebVR | Internal | Passing Juice |
| Web Workers | Internal | Passing Juice |
| XMLHttpRequest | Internal | Passing Juice |
| Using async scripts for asm.js | Internal | Passing Juice |
| Optimizing startup performance | Internal | Passing Juice |
| Using WebRTC peer-to-peer data channels | Internal | Passing Juice |
| Audio for Web Games | Internal | Passing Juice |
| 2D collision detection | Internal | Passing Juice |
| Tiles and tilemaps overview | Internal | Passing Juice |
| Using the Gamepad API | Internal | Passing Juice |
| Image rendering for pixel art | Internal | Passing Juice |
| 3D games on the Web | Internal | Passing Juice |
| Explaining basic 3D theory | Internal | Passing Juice |
| Building up a basic demo with A-Frame | Internal | Passing Juice |
| Building up a basic demo with Babylon.js | Internal | Passing Juice |
| Building up a basic demo with PlayCanvas | Internal | Passing Juice |
| Building up a basic demo with Three.js | Internal | Passing Juice |
| GLSL shaders | Internal | Passing Juice |
| WebXR | Internal | Passing Juice |
| 3D collision detection | Internal | Passing Juice |
| Bounding volume collision detection with THREE.js | Internal | Passing Juice |
| Implementing game control mechanisms | Internal | Passing Juice |
| Mobile touch | Internal | Passing Juice |
| Desktop with mouse and keyboard | Internal | Passing Juice |
| Desktop with gamepad | Internal | Passing Juice |
| Other | Internal | Passing Juice |
| 2D breakout game using pure JavaScript | Internal | Passing Juice |
| 2D breakout game using Phaser | Internal | Passing Juice |
| 2D maze_game with device orientation | Internal | Passing Juice |
| 2D platform game using Phaser | External | Passing Juice |
| Game distribution | Internal | Passing Juice |
| Game promotion | Internal | Passing Juice |
| Game monetization | Internal | Passing Juice |
| - | External | Passing Juice |
| - | External | Passing Juice |
| - | External | Passing Juice |
| - | External | Passing Juice |
| - | Internal | Passing Juice |
| About | Internal | Passing Juice |
| Blog | Internal | Passing Juice |
| Mozilla careers | External | Passing Juice |
| Advertise with us | Internal | Passing Juice |
| MDN Plus | Internal | Passing Juice |
| Product help | External | Passing Juice |
| MDN Community | Internal | Passing Juice |
| Community resources | Internal | Passing Juice |
| Writing guidelines | Internal | Passing Juice |
| MDN Discord | Internal | Passing Juice |
| MDN on GitHub | External | Passing Juice |
| Web technologies | Internal | Passing Juice |
| Guides | Internal | Passing Juice |
| Tutorials | Internal | Passing Juice |
| Glossary | Internal | Passing Juice |
| Hacks blog | External | Passing Juice |
| Mozilla Corporation’s | External | Passing Juice |
| Mozilla Foundation | External | Passing Juice |
| a Creative Commons license | Internal | Passing Juice |
Keywords Cloud
development tutorials web javascript page using games articles game mdn
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| game | 35 | ![]() |
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| web | 23 | ![]() |
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| games | 18 | ![]() |
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| development | 17 | ![]() |
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| mdn | 10 | ![]() |
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Url
Domain : openwebgames.com
Length : 16
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.
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
![]() |
Excellent, your website doesn't use nested tables. |
![]() |
Too bad, your website is using inline styles. |
![]() |
Too bad, your website has too many CSS files (more than 4). |
![]() |
Perfect, your website has few JavaScript files. |
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Too bad, your website does not take advantage of gzip. |
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
XML Sitemap
Great, your website has an XML sitemap.
| https://developer.mozilla.org/en-US/docs/Games |
Robots.txt
https://openwebgames.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.
Free SEO Testing Tool is a free SEO tool which provides you content analysis of the website.