Frontest
Extension Delisted
This extension is no longer available in the official store. Delisted on 2025-09-16.
A Chrome extension to try your HTML, CSS, JavaScript code using Chrome DevTool.

A Chrome extension to try your HTML, CSS, JavaScript code using Chrome DevTool. It's a essencial Frontend Tool
Frontend Developers:
Sometimes we need to test a piece of code outside the context of a project, there are many services that, jsFiddle, CodePen, and thousands more.
The problem with these services is that many times we prefer to make changes via Chrome DevTool, so we don't seize the site, only used to run our code the first time.
That's why Frontest arrives, an extension for Chrome with which we can perform the same tests but then use Chrome DevTool to edit the code.
Benefits:
It's faster, it's integrated to browser.
Use Chrome Dev Tool to edit your code.
Sublime Text Look and Feel
Persistent Data between Chrome accounts
And more...
Change log:
- Common libraries checkbox added.
- Keeps tests in the same tab.
- Break line support
- Panel with 800px
- Charset UTF-8 Fix
Latest reviews
This is an amazing & convenient tool in respect to generating data URIs — (1) subverts the need to visit websites like the "URI Kitchen" (2) does everything without forcing the user to navigate off-page. Highly recommend pairing this with CSS/HTML snippet extraction plugins, since you can extract HTML elements (including the CSS) and save them directly as bookmarks (note: this also lets you store search-indexable webpage data in your chrome bookmarks) #super-useful ⭐ ⭐ ⭐ ⭐ 💎
This is really great. Very useful to try new code before coding in your IDE.
Muy util, excelente aporte , muchas gracias.