How to resize jpg images

In this article, I will teach you how to adjust the jpg image to the desired size. I will tell two ways to resize jpg images, compress big jpg images to a smaller size, and enlarge small jpg images to a bigger size without losing quality.

Jpg image is not always with the size you want. Sometimes you need a small size, sometimes you need a large size depends on how you want to use this jpg image. For the first situation, you will need to compress the jpg image, for the other situation, you need to enlarge the jpg image, keeping the jpg image’s quality at the same time.

Image Compression

First, I will explain what jpg image compression is, so that you can understand why you need to compress jpg images.

Photo compression is a process of reducing the size of jpg image files, which can take up less memory in the computer without affecting the quality of the jpg image.

There are several reasons why need to compress jpg images:

  • save space on your computer
  • make it easier to send via e-mail or publish to the web because photos will take up less memory
  • using the compressed images on the website could improve the website’s running speed

There are a lot of jpg image compression tools on the market. Next, I will introduce you a free online compression tool with good performance – TinyJPG.


In this part, I will give a detailed introduction to TinyJPG in three aspects: what it is, how to use it, and the quality of the outcome.

What is it

TinyJPG is a free online compression tool. It uses smart lossy compression techniques to reduce the file size of the jpg image. By selectively reducing the number of colors in the jpg image, fewer bytes are required to store data. The effect on the jpg image’s quality is almost invisible, however the file size really different.

How to use

TinyJPG is notoriously easy to use. The program only takes three steps to complete the mission.

Step 1: Go to TinyJPG’s official website


Step 2: Click the box in the middle to upload the image you want to compress.

Step 2

Step 3: Wait till the cute panda raises his hand, which represents the process has finished. Download the compressed image.

Step 3


compare image

As the image shows, the left one is the original jpg image with the file size 540kb, the right one is the compressed jpg image, the size is 218kb. Although the size has been reduced by 59%, the program doesn’t cause any negative effect on the jpg image’s quality.

Image Enlargement

Now let’s move to the next part of resizing jpg image – enlarge jpg image. In this section, there will be a clear definition of image enlargement and why people need that. Then I will introduce you a perfect tool to do the jpg image enlargement.

As it says, image enlargement is to increase the size of the jpg image, to convert a small size jpg image into a large size jpg image.

People need to enlarge a jpg image very often in life, here are some scenes when you need to enlarge the jpg images:

  • when you download a jpg image from the internet and want to set as wallpaper, you need to enlarge the jpg image first before set that up, otherwise the image will be sketched automatically which results in blurry
  • when you want to print out a jpg image and put up as a poster
  • when you need to upload a high-resolution image as the website header page

Enlarging jpg images is not hard work to do, there is a lot of image enlarger tool on the market. However, it could be tricky to keep quality while increasing the size of the jpg image. AI Image Enlarger is the best solution.

AI Image Enlarger

Similarly to the previous program part, I will give a detailed introduction in three aspects: what it is, easy to use, and quality.

What is it

AI Image Enlarger is an AI-based image enlargement software to enlarge the jpg image. It is supported by deep machine learning and advanced AI algorithms to analyze resolution and enlarge photos and images. AI Image Enlarger can not only increase the size of the jpg image but also upscale the resolution.

How to use

Computer novice? Don’t worry! AI Image Enlarger is a user-friendly program. You will get the perfect result in 4 simple steps,

Step 1: Google AI Image Enlarger and click the official website

Google research

Step 2: Upload the image you want to enlarge

Upload the image

Step 3: Choose the ratio you need

aie step 3

Step 4: Click ‘Start’, and wait a few seconds, download the result


compare image

The above image is the comparison between auto sketch to 4x by computer and processed by AI Image Enlarger, also sketch to 4x. It is obvious that the jpg image processed by AI Image Enlarger has better quality.


Resizing a jpg image is no longer a tough work to do. There are many tools to help you to do compression or enlargement work. The two tools I have mentioned in this article is highly recommended. They are both free, online tool, you don’t need to download anything or pay for the service.


Beryl J.

Beryl J. Freelancer. Addict to image editing. Fan to AI technology. Anime lover. Like to write reviews of image editing programs/apps.

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