TinyMCE 4 remove/add attributes for all images
Assuming your TinyMCE4 container has an id of ‘tiny-mce-4’, you could add this js to your functions.php. function toArray (collection) { return Array.prototype.slice.call(collection); } var imgs = toArray(document.querySelectorAll(‘#tiny-mce-4 img’)); imgs.forEach(function(img){ img.setAttribute(‘style’, img.getAttribute(‘style’).replace(/((height:).*?(px;))/g, ‘max-width: 100%;’)); }); <div id=”tiny-mce-4″> <img src=”https://wordpress.stackexchange.com/questions/207673/img1″ style=”height: 500px; width: 800px;” /> <img src=”img2″ style=”height: 500px; width: 800px;” /> <img src=”img3″ style=”height: 500px; … Read more