How To Set Image To A Size In Html

How to Resize Images in HTML

To resize an image in HTML, use the width and summit attributes of the img tag. You tin besides utilise various CSS backdrop to resize images.

Hither'due south an image at its original size:

Y'all should be seeing this image at its original size, unless your device is narrow and has resized it.

Below is the same image after it's been resized using HTML (using the width and height attributes of the img tag):

Y'all can play with the dimensions and click Run to see how it affects the end issue.

Resizing with CSS

It's ordinarily ameliorate to use CSS to resize images in HTML. You can do this with the height and width properties.

In my stylesheet, I create a class called cats and I and so reference that in the img tag. By doing this, only images with class="cats" will set to this size. Yous tin can apply whatever class name you like. But exist sure that the img tag references the correct class.

Also, in this instance I used px to indicate the epitome size in pixels. You lot can employ whatsoever other valid length, pct, or various other values as required.

Resizing Considerations

Resizing images with HTML/CSS should but exist done if necessary. It is usually meliorate to utilise an image that is the right size in the first place than to resize it with HTML. This is because resizing it with HTML doesn't reduce the file size — the full file still has to exist downloaded before it can be resized.

Therefore, if possible, resize the image to the correct dimensions first using in an epitome editor (such equally GIMP) earlier uploading information technology to your website/blog.

Resize an Image Dynamically

Y'all tin use the CSS max-width property to resize the epitome dynamically.

The following example displays quite a large image in a minor viewport. To come across information technology in different sized viewports click Editor and Preview. You can also resize your window to run across the image shrink and expand.

By ommitting whatsoever width/height declarations and just using max-width: 100%;, the image volition be displayed at 100% of the size of its container, merely no larger. If the epitome is larger than its container, the image will compress to fit. Withal, if the image is smaller than its container, it volition be displayed at its truthful size (i.east. information technology won't increment in size to fit the container).

This technique can be handy when designing responsively for the image/web page to be displayed across multiple sized devices.

Read on for a more advanced method for responsively resizing images (using the moving picture element).

Resize ALL Images

The previous CSS examples put the styles into a class, and so that we can apply information technology selectively to certain images. Yous tin can also utilise styles to all images if yous similar.

In fact, you can combine it, so that all images are styled a certain way, and and so also be specific about certain images.

Here's an instance of what that could expect similar:

This sets all img elements to a maximum width of 100%.

However, it besides sets a class for thumbnails (called thumbnail) which explicitly sets their width and pinnacle. Therefore, images with that class will be sized using those explicit dimensions instead.

You might find that I've prefixed the class name with img. in the stylesheet. What I mean is, I've used img.thumbnail in the CSS. By doing this, I'thousand specifying that simply img elements that use the thumbnail class will take those styles applied. This prevents you from inadvertently applying the class to the incorrect element in the result that some other element uses a class of the aforementioned name.

For example, if a video element had course="thumbnail", the higher up class won't be applied to information technology. You would demand to use something like video.thumbnail in your stylesheet for video thumbnails.

However, this is entirely optional. Feel gratis to change img.thumbnail to just .thumbnail if you want the class applied to all elements that use that class.

Background Images

Y'all tin also resize background images using CSS. In particular, you can apply the background-size property to resize groundwork images.

Hither's an case:

In this instance, I use the contain keyword to specify the size of the background image. You can also supply any length or percentage value, the cover keyword, or car (which specifies that the prototype size is automatically determined using the intrinsic width and/or height of the image).

Further to this, all CSS properties are able to use the initial, inherit, and unset values.

When working with background images, you also have the option of using the background holding as a autograph to specify the background image URL, its size, the background color, etc, all in i become. I encourage you to expect at that page, because there are several other things you lot can do with regards to resizing/cropping/repeating groundwork images, etc.

The `picture` Element and Responsive Design

1 of the more than recent additions to HTML is the moving-picture show chemical element.

This element allows y'all to load a different epitome, depending on the user's screen pixel density, viewport size, image format, and other factors.

Here's an example:

Click the 2 orientation buttons at the top right of the editor to toggle the two images. Those two buttons change the orientation of the editor/preview pane, and therefore the width of the viewport.

Alternatively, endeavour clicking the Preview button, then resizing your browser window to see the aforementioned effect.

Doing this should switch the image from a shut-up of the kitten'due south face, to a larger version that includes the kitten'southward whole body.

I don't know what device/size screen you'll be viewing this on, and so y'all may need to resize your screen or reorient your device to see the consequence. Alternatively you lot tin adapt the lawmaking to employ a more suitable width for your device (i.due east. change 600px to a different value).

The picture element contains multiple source elements to determine possible source images for the img element, depending on factors such as screen pixel density, viewport size, image format, etc.

When using this element, yous're not actually resizing the image every bit such. What yous're doing is selecting the appropriately sized image for a given situation.

The good thing virtually this method is that it allows you to practice things like, display a cropped version of the image for smaller viewports, while displaying an uncropped version for larger ones.