Optimize Images for Web in Two Aspects: Format, Size

Images play an essential role on any web page. In some online tutorial articles, the existence of images can let readers get the content in an intuitive way. In online shopping websites, optimized images can cast an interest in site visitors and turn them into potential buyers. If you want to enhance the whole performance of your web, you can learn how to optimize the image for web through two perspectives.

Optimize Image for Web

Part 1. Choose the Best Image File Format for Web

The first thing for optimizing an image for web is to choose the best image file format for a particular web. Considering the size and characteristics, you can choose a JPG or PNG file according to the positioning and needs of different websites. Here are the pros and cons of the two image file formats. You can decide which image format suits your website best after reading the content.

1. JPG - Smaller Size but Low Quality

  • PROS
  • You can open this format on every image processing application because of its high compatibility.
  • The file size of JPG is small due to its high compression ratio.
  • If you pay more attention to higher loading speed and less storage, the JPG format is your first choice.
  • JPG format can support high color accuracy and looks more realistic.
  • CONS
  • The high compression ratio and lossy compression lead to the low quality and fewer details of the JPG format.
  • The JPG format doesn't support the transparency.
  • The flat JPG file doesn't support layers.

2. PNG - High Quality but Bigger Size

  • PROS
  • The PNG format supports the transparent and semi-transparent background for images.
  • The PNG format has high quality due to its lossless compression algorithm.
  • The PNG format shines at creating crisp graphics, such as brand logos.
  • The PNG format can support true color (24-bit), which is beneficial for professional designers.
  • CONS
  • The lossless compression leads to the bigger file size of a PNG image.

Part 2. Optimize Image for Web

1. Compress an Image for Web

Suppose you have chosen the most suitable image format for your web, or you want to exploit both of the two image formats because of their different merits. In that case, you need to compress images for Web. Whether you are a web developer or just a site visitor, you should be aware that a large image file size means more loading time. So, how to optimize images for web without losing quality? Here, you can use a free online tool called Apeaksoft Free Image Compressor to help you fulfill your purpose.

  • Support JPG, PNG, SVG, GIF file formats
  • Allow you to compress photos for web in batches (40 images)
  • Compress the big file size into a smaller one with the best quality
  • Advanced algorithm speeds up the compressing process

Step 1 Enter Apeaksoft Free Image Compressor on your search engine. Click the Add Images to Compress button to browse the big image files or directly drop the image file into the orange dotted box.

Add Images

Step 2 Within seconds, the advanced algorithm can compress all of the images at one time. Click the Download All button to download them all. Otherwise, you can click the individual Download button beside a specific image.

Download All

2. Resize the Image for the Website

Different websites have their own fixed scale, which means you need to resize an image to a specific width and height. To meet this purpose, all you need to do is get detailed information on these websites' demands. You can use GIMP or Adobe Illustrator to resize an image for different websites.

Part 3. FAQs about How to Optimize Image

Can PNG be used for web?

Yes, a PNG format can be used for web. In some occasions, like creating a unique website logo, the PNG format may be the best image format because of its transparency characteristic. If the PNG file size is too big, you can use a PNG size reducer to help you.

What size should a PNG be for a website?

The specific size should accord with the requirements of a particular website and the position of the image. For example, if you create a logo in PNG format, you may need to modify the width to 400 pixels.

What is the most common image file type?

JPG is the most common image file type. Its small file size and high compatibility make the JPG format widespread and commonly used.


In this article, you can learn image optimizing methods in two perspectives. For image formats, you can understand the pros and cons of JPG and PNG. For, image size, you can compress the image size with a powerful online tool called Apeaksoft Free Image Compressor for free. Hope you can apply these methods to optimize images for web.

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