Html IMG vs CSS Background-image

Image – Useful Tips

An image can be used in a webpage for two regions,

1) Image =  for content use, on the other hand, tend to change frequently. New images are uploaded often, users change their profile images and photo galleries, etc.

2) Background Image = for design. I.e. logos, button images, links with images, etc. tend to stay the same. They’re only changed if designer want to redesign.

The way I tend to think about this is, do I want the image to appear on all screen sizes, on all devices, with CSS turned either on or off? Do I want the image to be “indexed” by Google and Facebook. If the answer is yes to all or any of these questions, then usually the image is “content” and you should use an IMG tag.

If you want a different image to display at different screen sizes (or no image at all on certain devices), or if you’re happy for the image to not appear on a print out, or you’re happy for the image to not appear if CSS is turned off, then usually the image is “design” and you should use a background image.

Note: If an HTML file contains ten images – eleven files are required to display the page right. Loading images takes time, so my best advice is: Use images carefully.

Note: When a web page is loaded, it is the browser, at that moment, that actually gets the image from a web server and inserts it into the page. Therefore, make sure that the images actually stay in the same spot in relation to the web page, otherwise your visitors will get a broken link icon. The broken link icon is shown if the browser cannot find the image.


Proper uses of IMG & Background-image

  1. Use IMG if you intend to have people print your page and you want the image to be included by default. 
  2. Use IMG (with alt text) when the image has an important semantic meaning, such as a warning icon. This ensures that the meaning of the image can be communicated in all user-agents, including screen readers.


Creating a Puzzle game using jQuery

Today we are making a simple puzzle game called “Doraemon Puzzle”. The purpose of the game is to slide 15 square blocks around to form an image. The goal of this tutorial is to look at this simple browser-based game and explain how it was made line by line. It’s a great way to learn jQuery. For this tutorial, We will use a 2D image of kid’s favorite cartoon “Doraemon” for square-sliding game.  I will go over each line of code to demonstrate the train of thought. I really do believe that breaking this game up into explanations on per-line basis will help you understand how to use jQuery in your own projects.

Concept about creating a Game as a jQuery Plugin

A jQuery plugin is a perfect way to create image slideshows, custom user interface controls and of course browser-based games. We won’t just write JavaScript code here, we will create a jQuery plugin.

A plugin is nothing more than our own custom jQuery method. You know how we have jQuery’s methods .css() and .animate()? Well, jQuery gives us the ability to extend its own functionality with custom methods that we create ourselves. Like the existing jQuery methods, we can apply the method we will create to a jQuery selector.

Well, the game is called “Doraemon Puzzle”, and we want to make our game “embeddable” inside an arbitrary HTML element like <div id=”game_area”>here</div> so we can move it around anywhere on the page.


The jQuery

We will actually create our own jQuery method and call it .puzzle_dg(). I have already created the plugin “puzzle_dg.min.js“.  Therefore, in order to launch the game inside an HTML element with id “#game_area” we will call this command:


This will create and attach the game board to the div whose id is “game_area.” Also, each square will become 140 by 140 pixels in width and height based on the only passed parameter. You can re-size the game blocks and area easy by just changing this parameter.

In this tutorial I used the image of a Doraemon cartoon. You can replace it with any image you want.

Executing a custom method as shown in the code above will pass the selector string “#game_area” to our plugin function which grabs the DIV. Inside our custom method, we can refer to that selector/element using the this keyword. And we can also enable jQuery methods on it by passing it to the new jQuery object like so: $(this); — inside the extended function I have created.


First, let’s prepare HTML markup for our game.  We have only call <div id="game_area"></div> for creating game area.

We have to include the awesome jQuery library. After including the jQuery library we have to include “puzzle_dg.min.js”  file as game plugin.

<!-- This is where the game will be injected -->
<div id="game_object"></div>

<script src=""></script>
<script src="js/main.js"></script>
<script type="text/javascript">$(window).load(function(){


There are a few styles for our game:

#game_area {
	background-color: #ffffff;
	height: 550px;
	margin: 20px auto;
	position: relative;
	width: 550px;
#board div {
	background: url("images/doraemon.jpg") no-repeat scroll 0 0 #ffffff;
	cursor: pointer;
	height: 140px;
	line-height: 140px;
	position: absolute;
	text-align: center;
	width: 140px;
	/* css3 shadow */
    -moz-box-shadow: inset 0 0 20px #2caae7;
	-webkit-box-shadow: inset 0 0 20px #2caae7;
	-ms-box-shadow: inset 0 0 20px #2caae7;
	-o-box-shadow: inset 0 0 20px #2caae7;
	box-shadow: inset 0 0 20px #2caae7;

view demo


I tried to explain the code to the best of my ability here but some details were skipped because there is so much more to JavaScript. I hope you enjoyed this article. Thanks for reading!

You may like:

Posted by: Dhiraj kumar

Animate Full-Page Multiple Background images with fade-in & fade-out effect – jQuery

“How to change multiple background-image of body with effects?” – I think this is a major problem which all designers face. You can fade background colors but not background images. The way to work around this is to have your images as <img> tags and hide them by default display:none;. Give your images position:absolute and z-index:-1 so they act like backgrounds and are behind everything else.

Here’s a quick example of multiple images fading one after the other.



Html is very simple. Just add a div with multiple images which you want to animate / change in background with fade effects.

<div id="wrap">
<img class="bgfade" src="">
<img class="bgfade" src="">
<img class="bgfade" src="">


Now, We will use some CSS Technique which will create an illusion like background-image animation. The way to work around this is to have your images as <img> tags and hide them by default “display:none;”. Give your images “position:absolute” and “z-index:-1” so they act like backgrounds and are behind everything else. Now, set css property of div#wrap which includes these images to “position:fixed” and “top:0; left:0;” so that it will fix with page background.

#wrap img.bgfade{


Now, it is java-script’s turn. We will calculate browser window’s height & width. After that we will set width/height of div#wrap to browser so that background cover entire webpage. Now we have to animate our images. We will simple use function of fadeIn() and fadeOut() in images for this.

var dg_H = $(window).height();
var dg_W = $(window).width();
function anim() {
    $("#wrap img.bgfade").first().appendTo('#wrap').fadeOut(1500);
    $("#wrap img").first().fadeIn(1500);
    setTimeout(anim, 3000);


I have updated the script. Actually, after re-sizing the browser we have to update the width/height of div#wrap. So, I am going to reload this window, when ever browser will re-size. It will help to re-calculate all these and refresh the animation. Div#wrap will re-size according to browser window and play animation smoothly.

view demo

You may like:

Posted by: Dhiraj kumar

CSS3 Buttons with Cool Effects – Pure CSS

Nowadays, using subtle patterns is kinda cool so I thought why not using them also on buttons? The idea was to create some nice CSS3 patterned buttons and in this article you’ll see what I’ve been working on lately.


view demo

I wrote before about CSS3 buttons, so you may want to check also these articles:

CSS3 patterned buttons features

  • Easy-to-use.
  • Contain the transitions on gradients hack.
  • As you may have expected, no images used here. Instead, an base64 string is used to create the patterned effect.
  • Stilish pressed behavior when grouped.


Basically, to create a button, the only thing you have to do is this:

<a href="" class="button">Button</a>


<button class="button">Button</button>

You could also use something like <input type="submit"> but for best cross-browser rendering, just stick to the above.


  display: inline-block;
  *display: inline;
  zoom: 1;
  padding: 6px 20px;
  margin: 0;
  cursor: pointer;
  border: 1px solid #bbb;
  overflow: visible;
  font: bold 13px arial, helvetica, sans-serif;
  text-decoration: none;
  white-space: nowrap;
  color: #555;
  background-color: #ddd;
  background-image: linear-gradient(top, rgba(255,255,255,1),
  transition: background-color .2s ease-out;
  background-clip: padding-box; /* Fix bleeding */
  border-radius: 3px;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .3),
              0 2px 2px -1px rgba(0, 0, 0, .5),
              0 1px 0 rgba(255, 255, 255, .3) inset;
  text-shadow: 0 1px 0 rgba(255,255,255, .9);  

  background-color: #eee;
  color: #555;

  background: #e9e9e9;
  position: relative;
  top: 1px;
  text-shadow: none;
  box-shadow: 0 1px 1px rgba(0, 0, 0, .3) inset;

Different buttons sizes

If you want to make a more prominent or a less prominent call-to-action button, you have options:


<button class="small button">Button</button>


<button class="large button">Button</button>


/* Smaller buttons styles */

  padding: 4px 12px;

/* Larger buttons styles */

  padding: 12px 30px;
  text-transform: uppercase;

  top: 2px;

Various buttons colors

You’ll need custom colors for successful actions or negative ones as delete:


<button class="button">Button</button>
<button class="color red button">Button</button>
<button class="color green button">Button</button>
<button class="color blue button">Button</button>


  color: #fff;
  text-shadow: 0 1px 0 rgba(0,0,0,.2);
  background-image: linear-gradient(top, rgba(255,255,255,.3), 

/* */{
  background-color: #57a957;
  border-color: #57a957;
  background-color: #62c462;
  background: #57a957;

/* */{
  background-color: #c43c35;
  border-color: #c43c35;
  background-color: #ee5f5b;
  background: #c43c35;

/* */{
  background-color: #269CE9;
  border-color: #269CE9;
  background-color: #70B9E8;
  background: #269CE9;

Disabled states

In case you’re using buttons or inputs, in some cases you’ll need them to be disabled until a certain task is triggered:


<button class="button" disabled>Button</button>
<button class="color red button" disabled>Button</button>
<button class="color green button" disabled>Button</button>
<button class="color blue button" disabled>Button</button>


.button[disabled], .button[disabled]:hover, .button[disabled]:active{
  border-color: #eaeaea;
  background: #fafafa;
  cursor: default;
  position: static;
  color: #999;
  /* Usually, !important should be avoided but here it's really needed :) */
  box-shadow: none !important;
  text-shadow: none !important;

.green[disabled], .green[disabled]:hover, .green[disabled]:active{
  border-color: #57A957;
  background: #57A957;
  color: #D2FFD2;

.red[disabled], .red[disabled]:hover, .red[disabled]:active{
  border-color: #C43C35;
  background: #C43C35;
  color: #FFD3D3;

.blue[disabled], .blue[disabled]:hover, .blue[disabled]:active{
  border-color: #269CE9;
  background: #269CE9;
  color: #93D5FF;

Grouped buttons

There will be cases when you’ll need to group similar call-to-action buttons:


<ul class="button-group">
	<li><button class="button">Button</button></li>
	<li><button class="button">Button</button></li>
	<li><button class="button">Button</button></li>
	<li><button class="button">Button</button></li>


.button-group li{
  display: inline-block;
  *display: inline;
  zoom: 1;

  font-size: 0; /* Inline block elements gap - fix */
  margin: 0;
  padding: 0;
  background: rgba(0, 0, 0, .04);
  border-bottom: 1px solid rgba(0, 0, 0, .07);
  padding: 7px;
  border-radius: 7px; 

.button-group li{
  margin-right: -1px; /* Overlap each right button border */

.button-group .button{
  font-size: 13px; /* Set the font size, different from inherited 0 */
  border-radius: 0; 

.button-group .button:active{
  box-shadow: 0 0 1px rgba(0, 0, 0, .2) inset,
              5px 0 5px -3px rgba(0, 0, 0, .2) inset,
              -5px 0 5px -3px rgba(0, 0, 0, .2) inset;   

.button-group li:first-child .button{
  border-radius: 3px 0 0 3px;

.button-group li:first-child .button:active{
  box-shadow: 0 0 1px rgba(0, 0, 0, .2) inset,
              -5px 0 5px -3px rgba(0, 0, 0, .2) inset;

.button-group li:last-child .button{
  border-radius: 0 3px 3px 0;

.button-group li:last-child .button:active{
  box-shadow: 0 0 1px rgba(0, 0, 0, .2) inset,
              5px 0 5px -3px rgba(0, 0, 0, .2) inset;

Browser compatibility

CSS3 patterned buttons works in all major browsers. But of course CSS3 features used here do not work in oder browsers like IE8 and below.

view demo

This is it!

There are so many CSS3 buttons in the wild and I know it. Yet I’m confident that my CSS3 patterned buttons might inspire you and I hope you’ll find it useful for your future projects.

Posted by: Dhiraj kumar

Hover and Click Trigger For CIRCULAR Elements With jQuery

Today we want to share one possible solution to the circle hovering problem. We’ll create a plugin that will take care of the ‘mouseenter’, ‘mouseleave’ and ‘click’ events to be triggered only on the circular shape of the element and not its bounding box.

Applying a :hover pseudo-class to an element is widely known as the classic “hovering” over an element on a web page. A problem that arose with the introduction of the border-radius property is the non-realistic triggering of the hover event when entering the bounding box of the element and not just the actual visible area. This becomes extreme when we create a circle by setting the border-radius of a square to 50% (half of its outer width and height).

Today we want to share one possible solution to the circle hovering problem. We’ll create a plugin that will take care of the ‘mouseenter’, ‘mouseleave’ and ‘click’ events to be triggered only on the circular shape of the element and not its bounding box.



In our example, we’ll be creating a circle with some kind of hover effect. The structure will simply be:

<a href="#" id="circle" class="ec-circle">

And the style will be the following:

    width: 420px;
    height: 420px;
    -webkit-border-radius: 210px;
    -moz-border-radius: 210px;
    border-radius: 50%;
    text-align: center;
    overflow: hidden;
    font-family:'Kelly Slab', Georgia, serif;
    background: #dda994 url(HoverClickTriggerCircle.jpg) no-repeat center center;
        inset 0 0 1px 230px rgba(0,0,0,0.6),
        inset 0 0 0 7px #d5ad94;
    transition: box-shadow 400ms ease-in-out;
    display: block;
    outline: none;

Now, we will define a class for the hover effect but not a dynamic pseudo-class :hover. The idea is to apply this class then with jQuery when we enter the circular area of our element:

        inset 0 0 0 0 rgba(0,0,0,0.6),
        inset 0 0 0 20px #c18167,
        0 0 10px rgba(0,0,0,0.3);

Only when we have JavaScript disabled, we’ll add the pseudo-class. This style can be found in the noscript.css:

        inset 0 0 0 0 rgba(0,0,0,0.6),
        inset 0 0 0 20px #c18167,
        0 0 10px rgba(0,0,0,0.3);


We are going to create a simple plugin that basically “redefines” the three events mentioned earlier. We’ll make the events only applicable on the circular shape:

$.CircleEventManager            = function( options, element ) {
    this.$el = $( element );
    this._init( options );

$.CircleEventManager.defaults   = {
    onMouseEnter    : function() { return false },
    onMouseLeave    : function() { return false },
    onClick         : function() { return false }

$.CircleEventManager.prototype  = {
    _init           : function( options ) {
        this.options = $.extend( true, {}, $.CircleEventManager.defaults, options );
        // set the default cursor on the element
        this.$el.css( 'cursor', 'default' );

    _initEvents     : function() {
       var _self   = this;
           'mouseenter.circlemouse'    : function( event ) {
               var el  = $(,
               circleWidth   = el.outerWidth( true ),
               circleHeight  = el.outerHeight( true ),
               circleLeft    = el.offset().left,
               circleTop     = el.offset().top,
               circlePos     = {
                       x     : circleLeft + circleWidth / 2,
                       y     : circleTop + circleHeight / 2,
                       radius: circleWidth / 2

                // save cursor type
                var cursor  = 'default';
                if( _self.$el.css('cursor') === 'pointer' || _self.$'a') )
                    cursor = 'pointer';
       'cursor', cursor );
                el.on( 'mousemove.circlemouse', function( event ) {
                var distance    = Math.sqrt( Math.pow( event.pageX - circlePos.x, 2 ) + Math.pow( event.pageY - circlePos.y, 2 ) );

                if( !Modernizr.borderradius ) {

                  // inside element / circle
                  el.css( 'cursor','cursor') ).data( 'inside', true );
                  _self.options.onMouseEnter( _self.$el );

                 else {

                   if( distance <= circlePos.radius && !'inside') ) {                       // inside element / circle                       el.css( 'cursor','cursor') ).data( 'inside', true );                       _self.options.onMouseEnter( _self.$el );                                                   }                     else if( distance > circlePos.radius &&'inside') ) {

                      // inside element / outside circle
                      el.css( 'cursor', 'default' ).data( 'inside', false );
                      _self.options.onMouseLeave( _self.$el );
            'mouseleave.circlemouse'    : function( event ) {
              var el  = $(;
               if( 'inside' ) ) {
         'inside', false );
                  _self.options.onMouseLeave( _self.$el );
            'click.circlemouse'         : function( event ) {
              // allow the click only when inside the circle
                var el  = $(;
                if( ! 'inside' ) )
                    return false;
                    _self.options.onClick( _self.$el );
    destroy             : function() {     

When we enter with the mouse in the square bounding box of our circle, we bind the ‘mousemove’ event to the element and like that we can track if the distance of the mouse to the center of the element if longer than the radius. If it is, we know that we are not yet hovering the circular area of the element.

Once the distance of the mouse is shorter than the radius, we know that we entered the circle and we trigger our custom ‘mouseenter’ event.
We also only allow the click event when the mouse is inside of the circle.
In our example we will then apply our plugin to the regarding element. In our case, we are adding the hover class on ‘mouseenter’ and removing it on ‘mouseleave’.

    onMouseEnter    : function( el ) {


    onMouseLeave    : function( el ) {


    onClick         : function( el ) {



Remember that the “normal” pseudo hover class is also defined in the noscript.css which gets applied when JavaScript is disabled.

view demo

Your turn

I hope you enjoyed this article and the techniques I used. Please share your comments and questions below!

Posted by: Dhiraj kumar

Image Sprites – How to merge multiple images, and how to split them

An Image Sprites is a single image which is merged with multiple images. The reason why Image Sprites are needed instead of inserting multiple images into a page is to SAVE network bandwidth as well as reduce the number of server requests. Since inserting many images into a page will take longer time to load the pages, merging images into a single will help reduce loading time. For these reasons, I would recommend to use “CSS Image Sprites” function instead of inserting multiple images. Unfortunately, most of designers/developers not support this function as default, but through this tutorial, you would be able to merge multiple images into a single image as well as manipulating CSS.

“Image Sprites” is strongly recommended for Web, because Web themes have many graphics as default. Therefore, reducing the number of images is necessary to let people as well as search engines visit your sites faster than before. Some times ago, I have already posted an example of a cartoon type animation with help of Image Sprites.

Let me give you an example for easier understandings. Here is lots of avatars I have to put into a page. Without Image Sprites, I have to insert 24 individual avatars into a page. It will generate 24 requests of your web server so that it will take a long time to load.

24 image files to load / 24 requests

Just 1 image file to load / 1 request

With using “Image Sprites”, Only one request and one loading time will be generated. Which one do you think better?

In addition, with the help of “Image Sprites”, you can make use of hover effect more easily. In this tutorial, I will describe how to use Image Sprites with hover effects (View Demo).

To get started (Preparation)

  1. You may need to prepare more than two same size images to be inserted into a page like the avatar image file above.
  2. For this tutorial, I will use these 6 images below as an example. All six buttons’ sizes are equal as 33×33.

3 left images will be used for normal links, and the rest of images will be used for hover effects.

This single image below will be used for “Image Sprites”.


  1. Download .zip file or View Demo.
  2. Extract the compressed file onto your hard drive.
  3. Open “imagesprites.html” file using any TextEditor (Notepad/Dreamweaver).
  4. I will let you know some parts you need to replace so that you better modify some codes using text editor.
  5. This code is for this example so that your code will be different. You can refer to this code about how it works.
  6. Take a look at this part of the source code below:
.prev-button {
    width: 33px; height: 33px; border: 0px; background:url('/images/controllers.png') 0 0
a:hover .prev-button {
    width: 33px; height: 33px; border: 0px; background: url('/images/controllers.png') 0px -33px
.play-button  {
    width: 33px; height: 33px; border: 0px; background:url('/images/controllers.png') -33px 0
a:hover .play-button  {
    width: 33px; height: 33px; border: 0px; background: url('/images/controllers.png') -33px -33px
.next-button  {
    width: 33px; height: 33px; border: 0px; background:url('/images/controllers.png') -66px 0
a:hover .next-button  {
    width: 33px; height: 33px; border: 0px; background: url('/images/controllers.png') -66px -33px
image sprite
 As you can see, the first image’s position is “0 0” (.prev-button). The second image (.play-button) position is “-33px 0”. Because each width is set to 33px. Hence, the next image’s position should be “-66px 0”. On the other hand, for hover images, their Y position should be “-33px”, because each height is set to 33px.
  1. If you have set all, the next is to insert HTML codes for each image class like below:
<body style="background: transparent; margin: 0pt; ">
<a href="URL" target="_top"><img class="prev-button" src="/images/spacer.gif" /></a>

<a href="URL" target="_top"><img class="play-button" src="/images/spacer.gif" /></a>

<a href="URL" target="_top"><img class="next-button" src="/images/spacer.gif" /></a>
  1. If you don’t want an image to be linked, remove href= “URL” target= “_top” tag.
  2. Replace class names such as “prev-button”, “play-button”, and “next-button” to yours.
  3. Make sure the classes doesn’t have “.” at the very front.
  4. Modifying codes is done. You can apply this technique to other merged images.
  5. Make sure “spacer.gif” as well as your merged image file are also uploaded to the right place such as “/images/”.
  6. You are ready to check how “Image Sprites” works correctly. You will reduce the number of server requests as well as save network bandwidth with this CSS technique.

Posted by: Dhiraj kumar

jQuery Plugin for Cartoon-like Background Image Sprite Animation – AniDG – (alernative to animated Gif)

What is AniDg?

AniDg is a simple plugin for jQuery which allows you animate background images. The plugin is basically an alternative to the animated GIF but with several benefits. At first, it’s always better to use an animated GIF as this format is supported by all browsers without any JavaScript code or additional markup, but the “dark side” of it is that an animated GIF allows only 256 colors and you cannot control animation in any way. The AniDg loads a long vertical image and changes its background position with the speed you setup, giving you more control of the animation. For Better quality you can call PNG, JPG, GIF images in background image sprite as per your requirements.


jQuery Plugin AniDG Background image animation


  1. Light-weight script (Only 1Kb :))
  2. Easy to integrate
  3. Fully customizable via CSS
  4. Works with all modern browsers 🙂

How to Use


Simply place the following code anywhere inside thetag of your webpage:

<script type="text/javascript" src=""></script>
<script type="text/javascript" src=""></script>


STEP ONE: Download or The package already contains all files used in this demo.

STEP TWO: Unzip and place the file jquery-ani.dg.min.js in the same location as the webpage that is displaying the animation. (Make sure paths to files are correct.)

STEP THREE: include the following code in the <head>…</head> section of your webpage:

<script type="text/javascript" src=""></script>
<script type="text/javascript" src="jquery-ani.dg.min.js"></script>

3.) Add a style containing the url to your background with animation (this may be added to a separate CSS document or inside the <head>…</head> tag):

<style type="text/css">
#animation-1 {
background: url(images/sample-animation.gif) no-repeat left top;

4.) Add an empty DIV which will display animation in your document:

<div id="animation-1"></div>

5.) Add the following code to your <head>…</head> tag to initialize AniDg and start the animation.

<script type="text/javascript">
$('#animation-1').anidg({ frameWidth: 100, frameHeight: 100, speed: 100, totalFrames: 19 });

That’s it 😉 Click the Demo button to see it in action.

Public Functions
Start playing animation.

Pause animation.

Stop animation.


The table below contains a list of parameters accepted by the .anidg() function.

Parameters Description
frameWidth Width of a single frame.
frameHeight Height of a single frame.
speed Animation speed.
totalFrames Total frames in the animation.
loop Loop an animation or not. By default, value is true.

Posted by: Dhiraj kumar