Test on Mozilla Firefox 59
Perform real time live interactive testing of your webapp, website for cross browser compatibility on the latest Mozilla Firefox version 59. You can test your web application for functionality, visual bugs, and a lot more by performing cross browser testing.
ELEMENTS NOT SUPPORTED IN MOZILLA FIREFOX 59 BROWSER
Method of specifying and selecting between multiple video tracks. Useful for providing sign language tracks, burnt-in captions or subtitles, alternative camera angles, etc.
Custom Elements v1
Method of defining new HTML tags.
The inputmode attribute specifies what kind of input mechanism would be most helpful for users entering content into the form control.
OpenType font settings that allows a single font file to behave like multiple fonts: it can contain all the allowed variations in width, weight, slant, optical size, or any other exposed axes of variation as defined by the font designer. Variations can be applied via the font-variation-settings property.
prefers-reduced-motion media query
CSS media query based on a user preference for preferring reduced motion (animation, etc).
CSS ::marker pseudo-element
The ::marker pseudo-element allows list item markers to be styled or have their content value customized.
Allows some punctuation characters from start (or the end) of text elements to be placed "outside" of the box in order to preserve the reading flow.
CSS Initial Letter
Method of creating an enlarged cap, including a drop or raised cap, in a robust way.
CSS3 attr() function for all properties
While attr() is supported for effectively all browsers for the content property, CSS Values and Units Level 3 adds the ability to use attr() onany CSS property, and to use it for non-string values (e.g. numbers, colors).
CSS Device Adaptation
A standard way to override the size of viewport in web page using the @viewport rule, standardizing and replacing Apple's own popular viewport implementation.
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 Browsers to Choose From
You can choose from a range of 1400+ desktop and mobile browsers including Internet Explorer, Safari, Internet Explorer, Edge, Yandex, Opera, and Firefox allowing you to ensure that your customers get pixel perfect experience across all screen sizes, devices, operating systems, browsers, and resolutions.
Fastest Way for Cross Browser Testing
You can test your website for cross browser compatibility across all Firefox browser versions using LambdaTest
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