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CodePen VS BEM

Compare CodePen VS BEM and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

CodePen logo CodePen

A front end web development playground.

BEM logo BEM

BEM โ€” Block Element Modifier is a methodology, that helps you to achieve reusable components and code sharing in the front-end.
  • CodePen Landing page
    Landing page //
    2018-09-30
  • BEM Landing page
    Landing page //
    2022-11-21

CodePen features and specs

  • Real-time Collaboration
    Developers can collaborate with others in real-time, making it easy to work on projects with teammates or seek help from the community.
  • Immediate Visual Feedback
    CodePen allows you to see the results of your code as you write it, which is highly beneficial for learning and debugging.
  • Integrated Development Environment (IDE)
    CodePen provides a comfortable and feature-rich online IDE environment with syntax highlighting, autocomplete, and more.
  • Community-Driven
    Users can share their work with the CodePen community, receive feedback, and explore a wide range of projects created by others.
  • Extensive Resources
    CodePen offers a wealth of examples and templates for various web development tasks, making it a useful resource for learning and inspiration.
  • Cross-Device Accessibility
    Being an online platform, CodePen can be accessed from any device with an internet connection, making it convenient for developers on the move.

Possible disadvantages of CodePen

  • Limited Offline Functionality
    Since CodePen is primarily an online tool, it requires an internet connection for most of its features to work, limiting its usefulness in offline environments.
  • Performance Constraints
    Complex or resource-intensive projects may not perform as well on CodePen as they would in a full-fledged local development environment.
  • Subscription Costs
    While many features are free, advanced functionalities and additional storage options require a paid subscription, which may not be ideal for all users.
  • Limited Backend Capabilities
    CodePen is primarily designed for front-end development, so it offers limited support for backend technologies, making it less suitable for full-stack or server-side development.
  • Dependency Management
    Managing dependencies and libraries can be cumbersome compared to local development environments which have better tools for this purpose, like npm.
  • Security Concerns
    Sharing projects with the public can expose your code and assets to unauthorized use, posing potential intellectual property and security risks.

BEM features and specs

  • Consistency
    BEM enforces a structured way of naming and organizing CSS classes, which promotes consistency across the codebase.
  • Scalability
    The methodology is designed to handle large and complex projects by keeping styles modular and reusable, which helps in maintaining scalability.
  • Maintainability
    By using a clear naming convention, BEM makes it easier for developers to understand and maintain code, even if they weren't the original authors.
  • Flexibility
    BEM allows for flexible and modular component development, making modifications easier without affecting unrelated parts of the codebase.

Possible disadvantages of BEM

  • Verbose Naming
    The class names in BEM can become quite long and verbose, which might make the HTML markup harder to read.
  • Learning Curve
    Developers unfamiliar with BEM may need some time to adapt to its conventions and understand the methodology well.
  • No Enforced Hierarchy
    BEM does not inherently enforce any specific hierarchy or structure among elements, which might lead to inconsistencies if not carefully managed.
  • Increased Initial Setup
    Implementing BEM from scratch can involve significant upfront planning and setup, which might be seen as an overhead for smaller projects.

Analysis of CodePen

Overall verdict

  • Yes, CodePen is considered a good platform for web developers, both beginners and experienced. It offers a wide array of features that facilitate creative development and community engagement.

Why this product is good

  • CodePen is a popular online code editor and community platform for front-end developers to experiment with creating and sharing HTML, CSS, and JavaScript snippets. It provides an easy-to-use interface and real-time previews, making it a valuable tool for learning, prototyping, and sharing web development work. It also fosters a community where developers can showcase their projects, receive feedback, and learn from each other.

Recommended for

  • Front-end developers who want to quickly prototype and test web designs.
  • Beginners in web development looking to learn and receive feedback from the community.
  • Educators and students interested in a platform to showcase projects and collaborate.
  • Developers who want to explore creative coding and share their work with a community.

CodePen videos

What Is Codepen?

More videos:

  • Review - Learn to use CodePen from a co-founder of CodePen
  • Review - Using CodePen For Inspiration & Learning

BEM videos

BEM REVIEW! is Bem worth watching?

More videos:

  • Review - BEM - First Impressions
  • Review - Bem Episode 1 Discussion/ Review BEM HAS THE MUSIC!!!!!

Category Popularity

0-100% (relative to CodePen and BEM)
Text Editors
100 100%
0% 0
Developer Tools
0 0%
100% 100
Programming
100 100%
0% 0
Design Tools
0 0%
100% 100

User comments

Share your experience with using CodePen and BEM. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare CodePen and BEM

CodePen Reviews

Best Forums for Developers to Join in 2025
Codepen is a social network for developers to show off their work, ask and answer questions, and exchange ideas. It's like a Reddit for coding and design, with a large community of talented web developers.
Source: www.notchup.com
Top 10 Developer Communities You Should Explore
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepenโ€™s focus on visual and interactive development makes it an excellent community for front-end developers and designers.
Source: www.qodo.ai
8 Best Replit Alternatives & Competitors in 2022 (Free & Paid) - Software Discover
Codepen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn.
Best Online Code Editors For Web Developers
Probably the most popular online code editor. CodePen is fast, easy to use, and allows a web developer to write and share HTML/CSS/JS code online.
Source: techarge.in
Top 25 websites for coding challenge and competition [Updated for 2021]
CodePen is a cool online IDE that allows you to write code in your browser and see the result just as you build it. CodePen challenges is a place for leveling up your skills by building things. Each week, new challenges appear for you to tackle, and the best โ€œPensโ€ get picked.

BEM Reviews

We have no reviews of BEM yet.
Be the first one to post

Social recommendations and mentions

Based on our record, CodePen seems to be a lot more popular than BEM. While we know about 513 links to CodePen, we've tracked only 49 mentions of BEM. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

CodePen mentions (513)

  • CSS Properties You Should Know for Better Text Designs
    > I vividly remember IE and many hacks to have css elements properly working in itโ€ฆ The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support here: https://caniuse.com/ > Imho this is a reason why markdown and other rich-textual formats appeared. Markdown is a superset of html and through it contains css through the... - Source: Hacker News / 4 days ago
  • Ambient Website Background Clouds
    Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / about 1 month ago
  • Haunted Loop: A Pure-CSS Halloween Scene
    Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 10 months ago
  • Top 10 Free Tools Every Web Developer Should Know
    CodePen is where creativity meets frontend code. You can write HTML, CSS, and JavaScript and see results instantly in the browser. - Source: dev.to / 12 months ago
  • What is the Most Effective AI Tool for App Development Today?
    For those preferring agent-based approaches, Replit Agent shines. Khris Steven, Founder of KhrisDigital Marketing, notes, "You can simply describe what you want your app to do in plain English, and Replit Agent will generate the code and deploy it." This natural language interface fosters collaboration, turning ideas into deployable apps in minutes. - Source: dev.to / 12 months ago
View more

BEM mentions (49)

  • Why CSS Is So Hard for Generative AIs to Understand?
    Beyond the countless ways to achieve the same result, there are just as many methodologies for writing CSS itself. Have you ever came across BEM, SMACSS, OOCSS, atomic CSS, etc. If not, then you can add yours to the list. - Source: dev.to / 9 months ago
  • hearing Michael Scott.
    SCSS makes it easier to use mixing and variables. I'm exploring it's applications for Codepen as well as the use of BEM to modularize reusable CSS components. - Source: dev.to / about 1 year ago
  • The CSS Odyssey: Why I Turned back to CSS After Trying Everything Else
    Style conflicts is one. Although CSS class definitions are placed in reverse import order, problems still occur in Next.js when some pieces only appear in page but not layout CSS bundles. Following BEM (Block Element Modifier) and "Composition over Extension" patterns to separate concerns helps avoid styling collisions significantly. - Source: dev.to / about 1 year ago
  • :where() :is() my mind?
    BEM encourages a flat structure with minimal nesting and specificity, making styles easier to read and maintain. It significantly reduces the risk of unintended style overrides and enhances modularity. - Source: dev.to / about 2 years ago
  • SASS, CSS, or Tailwind: Which One Should You Choose?
    Keep in mind you also have to use BEM. If you use just SASS, there are little to no advantages compared with CSS. I am going to cover BEM in a separate article, but for your understanding, BEM is a methodology for writing good CSS. - Source: dev.to / over 2 years ago
View more

What are some alternatives?

When comparing CodePen and BEM, you can also consider the following products

JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

Sass - Syntatically Awesome Style Sheets

CodeSandbox - Online playground for React

styled-components - styled-components is a visual primitive for the component age that also helps the user to use the ES6 and CSS to style apps.

GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.

Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.