A polyfill for browsers that don't support the
object-fit CSS property. Unsure of what the
object-fit does? Essentially
object-fit is to
<img> tags what
background-size is to
background-image. You can check out the MDN page for more details.
- Lightweight - 2.8KB (1.8KB with the basic version)
- Supports IE 9+, iOS 7-, and Android 4.4-
- Works with
- Plug and play - just include the .js file and set data attributes on your elements.
- Please note: This plugin makes the assumption that the parent container is acting as a picture frame, and already has a height & width set.
You can check out the bare-bones demo here. Note that the plugin simply won't do anything if you're on a browser that already supports object-fit, so you'll want to test it on IE or older iOS/Android browsers.
How does it work?
Unlike object-fit-images or Primož Cigler's method (both excellent alternatives if you'd rather not use this one), this polyfill does not set a background image on the parent container, but instead resizes and repositions the image (using inline CSS for height, width, absolute positioning, and negative margins).
The polyfilled item will receive the class
object-fit-polyfill if styling issues occur that require overrides.
If you're wondering: why bother using
<img> tags versus
background-image? Here's a couple reasons:
<img>tags have better SEO/crawling visibility.
- In cases where images are dynamically returned and can't simply be added to your stylesheets (e.g., CMS's), you're forced to inline your background-image. This solves that somewhat-ugly-looking inline CSS.
background-imagedoesn't work with
Of course, there's still plenty of cases where using a background image makes more sense than a regular image.
<!-- Minimum CSS --><!-- Minimum HTML -->
If you're only interested in using the basic polyfill (which assumes
object-fit: cover and
object-position: 50% 50%), you can save yourself some bytes by using:
Installation via package managers
bower install objectFitPolyfill
npm install objectFitPolyfill
If you need to dynamically call the polyfill on the fly for any reason (for example, carousels or lazy-loaded images), you can do so quite easily:
// Rerun the polyfill on all elements with the data attribute;// Rerun the polyfill on a single DOM nodevar element = document;;// Rerun the polyfill on multiple elementsvar elements = document;;// Rerun the polyfill with a jQuery selector;
If you'd like to make feature requests such as IE 8- or adding object-position support for Safari, feel free to open an issue or pull request! It's doable and on my radar, but I probably won't get to it without some prodding.