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**Category:** Ember CLI\
**Created:** [April 23, 2015, 9:09am UTC](https://discuss.emberjs.com/t/am-i-using-htmlbars/7849 "2015-04-23T09:09:19Z")\
**Posts on this page:** 3\
**Page:** 1
**Author:**  [@krautman](https://discuss.emberjs.com/u/krautman)\
**Post date:** [April 23, 2015, 9:09am UTC](https://discuss.emberjs.com/t/am-i-using-htmlbars/7849/1 "2015-04-23T09:09:19Z")
Hey!
I just upgraded my ember cli project to the newest ember cli version (which is 0.2.3 - 23.4.2015). Now I wonder if I’m using HTMLBars or not. I read through many blog posts but I don’t get it. Maybe someone could explain to me, how I recognize if I use HTMLBars and how I activate HTMLBars if I’m not using it.
Thanks a lot Bye
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**Author:**  [@od1n](https://discuss.emberjs.com/u/od1n)\
**Post date:** [April 23, 2015, 10:04am UTC](https://discuss.emberjs.com/t/am-i-using-htmlbars/7849/2 "2015-04-23T10:04:39Z")
Open the console, reload your page and check whether you have in the console a message about Handlebars or not. If you don’t see - my congratulations.
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**Author:**  [@krautman](https://discuss.emberjs.com/u/krautman)\
**Post date:** [April 23, 2015, 1:26pm UTC](https://discuss.emberjs.com/t/am-i-using-htmlbars/7849/3 "2015-04-23T13:26:57Z")
Okay, so it seems I’m using HTMLBars. I was just curious because I didn’t recognize any performance boost. I don’t have any metrics but I can’t “feel” any difference to the older Ember version with Handlebars.
I tried also to activate HTMLBars on the conf/environment.js
```
EmberENV: {
FEATURES: {
'ember-htmlbars': true
}
}
```
but this gives me the following warning:
```
WARNING: FEATURE["ember-htmlbars"] is set as enabled, but FEATURE flags are only available in canary builds.
```
So, when I don’t see any Handlebar output on the console I’m on HTMLBars? Should it be possible to “feel” a performance improvement or are the improvements not as big as promoted?
I have some long lists and I was hopeing that HTMLBars would give me a better experience… So I think I have to wait for Glimmer 😃