
JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
A front end web development playground.

Ruffle
Flash Player 2021
SuperNova Player
X (Twitter)
Newgrounds Player
CheerpX for Flash
OpenSilver
The Lightspark project

Which is more popular?
Based on our record, CodePen seems to be a lot more popular than Lightspark. While we know about 513 links to CodePen, we've tracked only 9 mentions of Lightspark.
Website, pricing, platforms and company facts side by side.
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| Website | codepen.io | lightspark.github.io |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of Lightspark yet.
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using CodePen and Lightspark. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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.
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepen’s focus on visual and interactive development...
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.
We have no reviews of Lightspark yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


> I vividly remember IE and many hacks to have css elements properly working in it… 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... - Source: Hacker News / about 1 month ago
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 / 2 months ago
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 / 11 months ago
Not the first attempted Flash reimplementation[1,2,3]. The GNU one didn’t work all that well back in the day as far as I remember, but then Flash was a moving target at the time. [1]: https://www.gnu.org/software/gnash/ [2]:... - Source: Hacker News / over 3 years ago
A true emulator would be something like Ruffle or Lightspark. Ruffle I know doesn't work well with Walfas last time I checked. I don't know about Lightspark. Source: about 4 years ago
Lightspark, a browser plugin written in C++. It's a work in progress, not every flash content will work. Modern mainstream browsers don't support running it within a page, so flash content needs to be run in a standalone lightspark app,... Source: about 4 years ago
When comparing CodePen and Lightspark, you can also consider the following products.

Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
Compare JSFiddle to CodePen or Lightspark:



Want to fix "This plugin is not supported" and "Adobe Flash Player is blocked" error messages? This extension will remove those messages and allow you to play Flash in any website with a single click.
Compare Flash Player 2021 to CodePen or Lightspark:

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.
Compare GitHub to CodePen or Lightspark:
SuperNova Player allows systems to play .SWF files in a standalone player launched from any browser.
Compare SuperNova Player to CodePen or Lightspark: