# Crystal programming playground **URL:** \ **Category:** News\ **Created:** [September 21, 2019, 3:51pm UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140 "2019-09-21T15:51:52Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![vishr](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.crystal-lang.org/vishr/32/554_2.png) [@vishr](https://forum.crystal-lang.org/u/vishr)\ **Post date:** [September 21, 2019, 3:51pm UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140/1 "2019-09-21T15:51:52Z")
Folks, I wanted to share [https://code.labstack.com/crystal](https://code.labstack.com/crystal), an online Crystal programming playground. I hope you will find it useful. Thanks. ---
**Author:** ![asterite](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.crystal-lang.org/asterite/32/60_2.png) [@asterite](https://forum.crystal-lang.org/u/asterite)\ **Post date:** [September 23, 2019, 12:46am UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140/2 "2019-09-23T00:46:32Z")
Looks great! One small suggestion: use a js library to colorize ansi escape codes in the output panel, so that errors from compilation have nice colors. Otherwise compile with --no-color ---
**Author:** ![vishr](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.crystal-lang.org/vishr/32/554_2.png) [@vishr](https://forum.crystal-lang.org/u/vishr)\ **Post date:** [September 23, 2019, 1:30pm UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140/3 "2019-09-23T13:30:12Z")
Thanks for the feedback. ---
**Author:** ![vishr](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.crystal-lang.org/vishr/32/554_2.png) [@vishr](https://forum.crystal-lang.org/u/vishr)\ **Post date:** [September 25, 2019, 4:11am UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140/4 "2019-09-25T04:11:16Z")
> [@asterite](#): > > Looks great! > > One small suggestion: use a js library to colorize ansi escape codes in the output panel, so that errors from compilation have nice colors. Otherwise compile with --no-color Just implemented to decode terminal colors, let me now if this works. ---
**Author:** ![asterite](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.crystal-lang.org/asterite/32/60_2.png) [@asterite](https://forum.crystal-lang.org/u/asterite)\ **Post date:** [September 25, 2019, 11:55am UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140/5 "2019-09-25T11:55:29Z")
> [@vishr](#): > > Just implemented to decode terminal colors, let me now if this works. Beautiful, it works great! 👏 ---
**Author:** ![bew](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.crystal-lang.org/bew/32/113_2.png) [@bew](https://forum.crystal-lang.org/u/bew)\ **Post date:** [September 25, 2019, 12:14pm UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140/6 "2019-09-25T12:14:31Z")
It’s really nice, and unlike others that I tried (for C mainly) it works very well on mobile! ---
**Author:** ![bcardiff](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.crystal-lang.org/bcardiff/32/3_2.png) [@bcardiff](https://forum.crystal-lang.org/u/bcardiff)\ **Post date:** [September 25, 2019, 12:56pm UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140/7 "2019-09-25T12:56:50Z")
I dropped a wiki page at [https://github.com/crystal-lang/crystal/wiki/Online-playgrounds](https://github.com/crystal-lang/crystal/wiki/Online-playgrounds) to have a listing of known playgrounds. I already added [code.labstack.com](http://code.labstack.com) . ---
**Author:** ![girng\_github](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.crystal-lang.org/girng_github/32/571_2.png) [@girng\_github](https://forum.crystal-lang.org/u/girng_github)\ **Post date:** [September 25, 2019, 1:53pm UTC](https://forum.crystal-lang.org/t/crystal-programming-playground/1140/8 "2019-09-25T13:53:18Z")
Wow, very nice!