object-fit-images

Polyfill object-fit and object-position on images on IE9, IE10, IE11, Edge, Safari, ...

This adds support for object-fit and object-position to IEdge 9-13, Android < 5, Safari < 10 and skips browsers that already support them.

Take a look at the demo.

Main features

CPU-light code
No additional elements are created or necessary
Once set, position is taken care by the browser
You can normally get and set the <img>'s src attribute: img.src = 'other-image.jpg'
srcset support

Comparison table with alternative solutions

Support

              | bfred-it<br>/object-fit-images🌟                                                                                         | [constancecchen<br>/object-fit-polyfill](https://github.com/constancecchen/object-fit-polyfill) | [tonipinel<br>/object-fit-polyfill](https://github.com/tonipinel/object-fit-polyfill) | [jonathantneal<br>/fitie](https://github.com/jonathantneal/fitie)

:--- | :--- | :--- | :--- | :--- Browsers | _{IEdge 9-14, Android<5, Safari<10} | <- Same | "All browsers" | IE 8-11 Tags | img | image video picture | img | img video cover/contain | 💚 | 💚 | 💚 | 💚 fill | 💚 | 💚 | 💚 | 💚 none | 💚 | 💚 | 💚 | 💔 scale-down | 💚 _{using {watchMQ:true}} | 💚 | 💔 | 💔 object-position | 💚 | 💔 | 💔 | 💔 srcset support | 💚 Native or picturefill _notes | 💚 | 💔 | 💔 Extra elements | 💚 No | 💔 Yes | 💔 Yes | 💔 Yes

Usage

You will need 3 things

one or more <img> elements with src or srcset

<img class='your-favorite-image' src='image.jpg'>

CSS defining object-fit and a special font-family property to allow IE to read the correct value
```
.your-favorite-image {
	object-fit: contain;
	font-family: 'object-fit: contain;'
}
```
or, if you also need object-position
```
.your-favorite-image {
	object-fit: cover;
	object-position: bottom;
	font-family: 'object-fit: cover; object-position: bottom;'
}
```
To generate the font-family automatically, you can use the PostCSS plugin or the SCSS/SASS/Less mixins.

If you set the font-family via javascript (which must be followed by calling objectFitImages()), make sure to include the quotes in the property.

the activation call before </body>, or on DOM ready

objectFitImages();
// if you use jQuery, the code is: $(function () { objectFitImages() });

This will fix all the images on the page and also all the images added later (auto mode).

Alternatively, only fix the images you want, once:

// pass a selector
objectFitImages('img.some-image');

// an array/NodeList
var someImages = document.querySelectorAll('img.some-image');
objectFitImages(someImages);

// a single element
var oneImage = document.querySelector('img.some-image');
objectFitImages(oneImage);

// or with jQuery
var $someImages = $('img.some-image');
objectFitImages($someImages);

You can call objectFitImages() on the same elements more than once without issues, for example to manually request an update of the object-fit value.

Apply on `resize`

You don't need to re-apply it on resize, unless:

You're using scale-down, or

your media queries change the value of object-fit, like this

                             img { object-fit: cover }
 @media (max-width: 500px) { img { object-fit: contain } }

In one of those cases, use the watchMQ option:

objectFitImages('img.some-image', {watchMQ: true});
// or objectFitImages(null, {watchMQ: true}); // for the auto mode

Install

npm install --save object-fit-images

var objectFitImages = require('object-fit-images');

If you don't use browserify/webpack, include this instead:

<script src="dist/ofi.browser.js"></script>

API