Preface

Images often reason for most of the downloaded bytes on a web page and also occupy a major amount of visual space. As a result, optimizing images can often produce some of the largest byte savings and performance improvements for your website.
Image optimization is using the most compressed that is smallest file size. Image Optimization requires careful examination along many measurements :

• Format capabilities,
• Content of encoded data,
• Quality, pixel dimensions, and more.

Guidelines

Choosing file formats

For most ecommerce situations : JPEGs will be your best choice. These provide the Best quality and the compress size images.
Never use GIFs for large product images : These file have large size and if you try to reduce them it will not get the small size as jpeg images.  Use GIFs for thumbnails and decorative images.

JPG Quality: Use JPG quality of 60 – 70 in Photoshop. JPEG images are compressible, which results in quality images with small file sizes.

Quality And Size

Before you upload an image, logo to your website, think about the quality and file size of the image. Your customers won’t wait around for that picture to load and leave your site, quick loading images is important and a quick loading website keeps visitors promised.
On the other hand, you don’t want to upload a poor pixelated and blurry image. Your website will look unprofessional. You need to save all your images for web, before uploading.
· Large images or full-screen background images should not be more than 1MB.
· Other small web images can be 300KB or less.

Some Other Tips

1. Name Your Images Descriptively

It is important to use acceptable keywords that will help to increase website rank on search engines. Using descriptive keyword is essential for image optimization. Search engines crawl the text on your webpage, as well as they also search for keywords within your image file names. Also think about how your visitors can search for products on your website.

2. Optimize Your Alt Tags Intelligently

The alt attribute help to add Search Engine Optimization value to your website. You can achieve better rankings for your website in the search engines by adding associating keywords with images.

3. Use Image Sitemaps

If your site uses JavaScript galleries, Google image site maps will help you get your images observed by Google.
Google has many guidelines for image broadcasting to help your website rank high on the search engine.
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Optimize Images For WordPress Website

Optimizing Your Images Before Uploading
Using WordPress’s thumbnail feature, you can customize images before uploading it, which will automatically create three different sizes of any image for you to upload.

This setting can be found in the WordPress admin area under Setting / Media.  In Photoshop, there is an option called Save  for the Web. This option allows you to choose the image type and image quality of the image.
If your graphical editor does not have an optimization option, so you can check out one of the following applications:

• ImageOptim(MAC)
• RIOT(Windows)
• PNGGauntlet (Windows)
• Trimag (Linux)

All of the above applications are free to download, so by using these application you can easily optimise images.

File Formats

Graphic applications allow you to save images in a different file formats. JPEGs are suitable for photos because they are of many colors. The format uses compression to reduce the file size.

PNGs are more suitable for screenshots and website design images such as icons and buttons. GIFs are suitable for low quality pictures with only a few colors. The GIF format for animated files is widely known on the Internet.

Optimizing Your Images After Uploading

One of the most popular optimization plugins for WordPress is Yahoo’s WP Smush.it. This plugin allows you to optimize all type of images including JPEG compression, also convert GIF files to PNG and remove unused images.

Save Images Properly

By choosing the right arrangement, you can decrease your image size by 5x. Use Save for Web or Export for Web options.

Conclusion

Image Optimization is the basic step for your SEO. Optimize the image, reduce the page loading times of your website, reduce bandwidth and improve the browsing experience for visitors.

Your search engine ranking has become even better because of your pages, which are loading quickly. Image optimization also improves performance and results in smooth running your website.