Image optimization: Reduce the time of cargo without compromising the image quality

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Optimizing images is important because it helps us to reduce the load times of nuestor website, it improves the experience of users and to improve our rankings in the search engines.

The image optimization involves several main methods, including changing the size, compression, caching and lazy loading, which can easily be achieved with a solution of digital asset management (DAM).

Change the size will help the optimization of images

As soon as a visitor visits your web site, each image must be loaded and interpreted for your size of display provided, which takes up valuable space and increases the loading time of the page. According to research conducted by Strangeloop, one second of delay can result in 7 % fewer sales, 11 % fewer site visits and 16 % less customer satisfaction.

Large images may have a substantial effect on loading times and speed of the pages due to their need for processing of memory. Luckily, you can optimize them by changing the size and using techniques of lossless compression to reduce the file size without losing quality.

To achieve maximum file reduction and achieve image optimization, it is best to avoid excessive resolution, as this leads to pixelation when reducing the size of an image. Instead, examine the size of the images that appear on your website and resize them accordingly, eliminating extra pixels and significantly reducing the file size.

Use the picture> element with its srcset attribute to provide different quality versions of images based on screen size and resolution, providing different quality versions based on the devices accessed by your site visitors. This approach can provide more complex solutions if there are multiple target devices on which you need to deliver high quality versions of your images.

Compressing the size of image files with tools such as TinyPNG is another effective method of reducing file size by removing unnecessary information and data. You can further optimize image performance with deferred loading, which allows browsers or users to start viewing images as soon as they download them; you can do this using image optimization plugins such as Native Lazyload.

The compression of the image help to the optimization of images

Capture / compression of image

The files of graphics or images can have a huge impact on the loading speed of the page. The media files large can overload the servers of the website, which makes the pages load slowly or even fail completely. By using the tools of optimization of images from Cloudinary to resize and compress the images, we can help you to free up space on our server to ensure the fastest load times in the web site to our visitors.

May be particularly important if your website has many high-resolution photos or graphic designs, such as one that belongs to a company of photography or graphic design. Reduce the size of the image files helps that the images will load faster for your site visitors and, at the same time, simplifies the processing of the data by the computer, which offers visitors a more pleasant experience on your website.

Image compression or image compression can be lossless when done correctly. Lossless compression is a form of image optimization where unnecessary technical data is removed without affecting visual quality, including color transformations, quantization (the process of grouping pixel values into discrete levels), run-length coding, etc. To achieve this goal efficiently.

The Huffman code is an example of lossless compression that uses substitutions and additions that take advantage of redundancies within the data. This technique can be applied to a variety of image formats, such as PNG, JPG and GIF files.

The methods of image compression without loss, such as LZW and Deflated, can reduce the size of image files by using mathematical operations and dictionary to eliminate repetitive patterns in an image, typically with up to 50 % savings in the reduction of the size of the file.

There are other methods available to reduce the size of image files without compromising visual quality, such as JPEG Optimizer, Magneto 2 Image Optimizer and WP Smush (which offers free online image optimization tool services). Many of these tools use image resizing and compression simultaneously, and you can configure how they should work to meet your image quality needs.

Caching

Images account for the majority of a website's data and can significantly slow down page load while taxing network resources, especially for mobile users with limited or expensive data plans. Image optimization seeks to lighten pages, speed up delivery, reduce resource usage, and provide an improved user experience while improving the rankings of SEO and the visibility of the site.

Image optimization involves providing images in the format, dimensions and resolution that best suits their content and the user's device, all while maintaining the smallest possible file size. This process can be time-consuming and manual due to the multiple image transformations and preprocessing scripts required.

One of the main factors limiting site performance is image file size, which can be drastically reduced by resizing, compressing and converting to the appropriate file type. In addition, using formats such as PNG or JPEG will drastically speed up load times and reduce bandwidth consumption.

Optimizing the size of images will improve your website's performance a little, but: caching them can improve it even more! Caching involves temporarily storing file information in the browser or proxy servers so that it can be quickly and easily retrieved when visitors reload your website.

Another way to speed up website load times is image optimization with sprites, which allows us to combine several images into one when downloading website information, rather than individually for each browser and device. This strategy works especially well when dealing with patterns with repetitive elements such as logos, icons and wallpapers.

As a final tip, we recommend you don't forget to include alternative text for images to provide search engines with valuable information about them and to make it easier for visually impaired people to use text to navigate websites. By including descriptive alt text, your site could rank higher in Google's image search results, making the content of your web pages accessible and inviting to visitors of all backgrounds, regardless of ability.

Add alternative text help to the optimization of images

Alternative text

The text alternative is a crucial component of any website and offers the opportunity to include descriptions that are rich in keywords that help the search engines understand your images, and as a result position the pictures on google or other search engine; but beware of "keyword stuffing" as this could result in Google penalties, rather, concentrate on accurately describing each image with relevant keywords related to its context and accuracy in writing this text.

The alternative text of the image is an integral component of the design of accessibility, which allows screen readers to describe images to blind people or people with vision problems. In addition, search engines use it to understand better the purpose and the content of an image and, ultimately, to classify more effectively during the search for images.

To create an accurate and descriptive alt text, imagine you are writing a blog post but you don't have the images, then try to describe everything in your post: what information would you put in to convey your post? That's the alt text! Providing answers can give a great indication of what information should be included in it.

Keep your alt text descriptions brief. They should not become an opportunity for you to compose an essay about an image, but should provide relevant contextual information to users without viewing capabilities. If your image does not convey any meaningful data or purpose, consider it decorative without providing any alt text descriptions.

Most CMS have a choice of image optimization, which allows you to edit or create alternate text for each image on your web site or blog post. The process should be simple: just click on an image, enter your description in the text field of alternative and save.

Image optimization is a fantastic way to speed up web page load times, increase user satisfaction and boost SEO without compromising image quality. By resizing and compressing, you can reduce the size of your files without compromising their quality. In addition, deferred loading and caching techniques allow you to load images specific to your visitors' experiences without slowing load times or lowering SEO rankings. By following these steps, you can improve load times without compromising image quality: improve load times and increase SEO rankings simultaneously!

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