Images play an important role in attracting readers and making content more vivid, but they can also slow down page loading speed if not optimized properly. Slow page loading speed not only affects user experience but also reduces the SEO ranking of the blog on search engines like Google. In this article, we will learn how to optimize images to increase the page loading speed of your blog on Blogger, helping to improve the overall performance of the website.

Choose the Right Image Format

Choosing the right image format is the first step in optimizing your images. Popular formats like JPEG, PNG, and GIF all have their own advantages. JPEG is often used for complex images with lots of colors, like photographs, because it compresses well without losing too much quality. PNG is good for images that need transparency and few colors, like logos or icons. GIF is good for short animations. For regular blog images, JPEG is the best choice because of its small size and good quality.

Alternatively, you can use newer image formats like WebP, which reduce image file sizes while maintaining high quality. WebP compresses better than JPEG and PNG, which can significantly improve page load speeds.

Compress Images Before Uploading

Compressing images is an important step in reducing file size without significantly reducing quality. There are many free online image compression tools such as TinyPNG, JPEG-Optimizer, or Squoosh. These tools compress images to an optimal level before you upload them to Blogger, minimizing the size without affecting the display quality.

When compressing images, try different levels of compression to find the balance between file size and image quality. Make sure the image is still clear and doesn’t become blurry or lose important details.

Set the Correct Image Size

A common mistake when using images on the web is not setting the correct dimensions. Images that are larger than the viewport not only slow down page load times but also waste bandwidth. Make sure you only upload images that are sized to fit your blog’s viewport. For example, if your viewport has a maximum width of 800px, your images should not be wider than that.

You can resize images using tools like Adobe Photoshop, GIMP, or online photo editing tools to ensure that the image always fits the website’s display frame.

Using the Size Attribute in the Tag

Using the `width` and `height` attributes in the ` tag` helps the browser determine the size of the image before loading, thereby improving page rendering speed. This helps the browser reserve space for the image before it is loaded, preventing page jumps and improving user experience.

For example, you can use:

<img src="image.jpg" alt="Mô tả hình ảnh" width="800" height="400" style="max-width: 100%; height: auto;">

to ensure the image displays in the desired size and ratio.

Using Lazy Loading for Images

Lazy loading is a technique that only loads images when they are about to appear on the user’s screen. This reduces the amount of data that needs to be loaded initially and improves page load speed, especially for pages with many images. On Blogger, you can add the `loading=”lazy”` attribute to the `` to perform lazy loading.

For example:

<img src="image.jpg"alt="Mô tả hình ảnh" loading="lazy" style="max-width: 100%; height: auto;">

. This delays loading of images until the user scrolls down near their location, making the page load faster and saving bandwidth.

Optimize Alt Tags and Image File Names

Alt tags (alternative text) not only help improve SEO, but also provide a description of the image when it cannot be displayed or for visually impaired users using screen readers. Make sure that the alt tag of the image accurately describes the content and includes relevant keywords where possible. This not only helps search engines better understand the content of the image, but also increases the visibility of the article in image search results.

Additionally, image file names should be short, clear, and contain relevant keywords. Instead of using the default file name like “IMG1234.jpg”, rename it to “cach-nau-pho-bo.jpg” to enhance image SEO.

Using a Content Delivery Network (CDN)

Using a CDN (Content Delivery Network) helps deliver image files to users from servers closest to them, reducing page load times. CDN not only helps improve page load speed but also reduces the load on the blog’s main server, making the website more stable.

Popular CDN services like Cloudflare, Amazon CloudFront, and Google Cloud CDN can easily integrate with Blogger to deliver images faster and more reliably to users globally.

Increase page load speed

Optimizing images is an important step in improving your Blogger blog’s page load speed. By choosing the right image format, compressing images before uploading, setting the correct dimensions, using lazy loading, and optimizing alt tags and file names, you can significantly reduce image size and improve user experience. Don’t forget to check regularly and continue optimizing to ensure your blog is always running at its fastest and most efficient.

Hopefully with the above instructions, you will have more knowledge and skills to optimize images for your blog, help increase page loading speed and attract more readers. Wish you success in developing your blog on Blogger!