Slick Review

Allows for setting your slider in html alone via data attributes and create quick slideshow or carousels. You only need to initiate the slider element to be worked by slick plugin.

Apparently, you can also filter the ordering of your slide or carousel items.

Adaptive height allows your slideshow height to adjust depending on the aspect ratio of your slide image. Variable widths allows your carousel to depend on the slide image's width so you will have carousel items with varying widths if you like.

You can synchronize your sliders provided if they have equal number of slide items.

You can hook your own css animation, will it be transitions or keyframes by taking advantage of Slick classes dynamically assigned to your slider and slide item elements.

You can pretty much control what can happen on every events (after init, after slide changes, lazy load success, etc) to suit your needs. You can trigger the slider operations via the code. There will always be use cases for these based on my experience.

Performance wise, you can speed up the rendering of your site by allowing this slider to serve smaller sized version of the images on each slides, without waiting for all the higher quality images to load. Once a higher quality image for a slide is loaded it will smoothly transition to reveal it.

You can navigate smoothly through slides by dragging the slide by your finger on touch devices left or right. This swiping behavior can also be enabled via mouse-based interaction on desktop devices.

It will automatically scale your image to fit the browser screen width if you like. You can also adjust any settings for each browser width breakpoints so to completely control how it will look like in different sized screens.

It's primarily capable of showing not just one slide but multiple items.