İ  |  ձZ E-mail:dora.hu@trueland.net Switchboard: +86-21-51021529
Your current locationHome > News


Why and How to Optimize Images for Website?

  • Source: http://en.trueland.net/  Author: Helen  Published on :2012-11-14 8:17:01   Views:

Image can be regarded as one of the important part of a website. And it is absolutely that image occupates the storage and bandwidth space for hosting. However, image optimization, as one organic part of search engine optimization (SEO), can be of great importance to the whole optimization of your website. It seems that all websites use image as their background, button, logo, icons and so on. What's more, there are some websites depend more upon images actually. So, that is why we give the following tips on how to optimize images for website for you.

The image optimization usually can be regarded as the way to improve the quality of image by minimize the size of image. Generally speaking, the more optimized image, the faster webpages can be loaded actually. Optimizing the image on your site can help to save storage and bandwidth space for your hosting. Well, actually, there are many people who ignore the importance of image optimization, which results in the slow loading speed. SEO, including image optimization, can give a good impression both to search engines and human visitors since there is no need to wait long time for loading.

When it comes to the image optimization, you are advised to know about some basic formats of images. There are many image formats available, but only a few work on website. Lossy and lossless image compression are the most common image compression actually. Generally speaking, you can't get the exact same images as the original if you decompress the compressed data. This kind of lossy compression picture or image can only be visible at a closer look. However, lossy compression is good for web since images use small amount of memory but can be sufficiently like the original image. So, there is no doubt that choosing the lossy compression as your first choice when you optimizing your images.

There are different image formats, like JPEG, GIF, PNG and so on. Generally, JPEG is good for saving images with millions of colors, lilke photographs. The image type is lossy and you are able to control the compression level actually. While GIF format image is a grid made of tiny pixel squares. The GIF can be animated. It is a good format for saving images with less colors since the image programs can control the exact number or colors stored in a particular image. However, the best format to save images is the PNG format since it can preserve transparency and large amount of colors or partial transparency. It has great color-depth than GIF and can store partial transparency and can achieve greater compression.

When it comes to the issue of image optimization, you are advised to choose the right image format actually. Choosing .jpeg format for photos, .png for logos, buttons and others, .gif for animations and so on. Also, you are advised to use the relevant names when naming your images. You'd better use hyphens (-) instead of underscores (_) in your file names.

Quality comes first. The high-quality images are expected both by search engines and visitors. And keep your images frequently updated. You are also advised to use the alt attribute of the image tag which should contain a description as well.

Tags: cheap-seo free-seo-tools

Copyright©: Shanghai Trueland Information Technology Co., LTD. All rights reserved.