Browser Compatibility Testing of JAVASCRIPT asm.js

Get Started

Browser Compatibility Testing For CSS text-stroke and text-fill


An extraordinarily optimizable, low-level subset of JavaScript, intended to be a compile target from languages like C++.

Sign Up For Free

online web app testing


Test your Web App on LambdaTest

With LambdaTest you can test your website on 2000+ browser and OS combinations for cross browser compatibility issues and ensure that your webpage fallbacks are working fine on browsers that do not support JAVASCRIPT asm.js.

All Browser Versions

Real Time Testing on Chrome browser


Google Chrome

Chrome browser version 4 to Chrome browser version 27 doesn't supports. Chrome browser version 36 to Chrome browser version 70 partially suppports JAVASCRIPT asm.js.

Mozilla Firefox

Mozilla Firefox browser version 2 to 21 doesn't supports. Firefox version 22 to 63 supports JAVASCRIPT asm.js.

Internet Explorer

Internet Explorer browser version 6 to Internet Explorer browser version 11 doesn't supports JAVASCRIPT asm.js.


Safari browser version 3.1 to Safari browser version 12 supports JAVASCRIPT asm.js.

Microsoft Edge

Microsoft Edge browser version 12 doesn't supports. Microsoft Edge browser version 13 to Microsoft Edge browser version 18 supports JAVASCRIPT asm.js property.


Opera browser version 10.1 and Opera browser version 12.1 doesn't supports JAVASCRIPT asm.js. Opera browser version 15 to Opera browser version 53 partially supports and partial support in Opera refers to supporting an older version of the specification.JAVASCRIPT asm.js.

Information sourced from

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

Other Browser Elements and Properties

All websites and webapps use collections of a lot of browser technologies and elements. Not all of these elements are supported by all browsers and browser versions. At LambdaTest you can test your website on all browsers and browser versions and easily debug browser compatibility issues in real time.

Checkout All Elements


Fastest Way for Cross Browser Testing

Test your website on Firefox

You can test your website for cross browser compatibility across all Firefox browser versions using LambdaTest

Test your website on Chrome

Perform cross browser testing of your website/ webapp across all Chrome browser versions using LambdaTest

Test your website on Safari

Check your website on all Safari browser on Mac and Windows for cross browser compatibility with LambdaTest

Test your website on IE

Perfrom cross browser testing of your website/ web app across all IE verions using LambdaTest

Free Plan With 60 Minutes of Live Testing

Our plans starts with a free plan where you access to all features and free 60 minutes of live testing per month.

Scale As You Go

Need support for a larger team? We have very flexible plans and if they don’t suffice, leave us a message here, and we would help you out.