How to resize and compress Multiple Images at Once
Tags: Toolkit, Image Compression, Image Processing, Resize Images, Free

How to resize and compress Multiple Images at Once Maaskari Apr 13·4 min read

Nearly all of us these days have hundreds — if not thousands — of digital photos stored on our phones, tablets and computers. Sometimes we have to delete some of these photos to make room for our other new files.

Maybe you have a website and write posts that contain multiple images. But, if you’re not careful, images can account for over half (or more) of your web page’s total size. The main reason this is happening is because these images aren’t properly sized and optimized. This means your page loading speed is affected.

Studies show that up to 40% of visitors click the back button if a site takes longer than three seconds to load. Unnecessarily large images also take up space on your hosting account.

For both of these cases I mentioned above, resizing and compressing that many photos one at a time could take you all day… or several days, even!

In this article, I am going to show you how to batch resize and compress using a free online photo editing tool. Let’s get to it!

How to Resize Multiple Images at Once Using pixellair.com

online image resizer

Pixellair is an online image optimization tool that allows you to quickly resize a large amount of pictures. It is so simple and fast.

1. Open your web browser.

2. Go to Pixellair.

3. Click or just drag and drop your images on the drop zone.

4. If you have chosen to click on the drop zone, you have to go to the location on your computer where the images are stored and select all the images.

5. After your images have all uploaded (the time this takes, depends on the number of pics you are uploading as well as your Internet speed), you will need to choose the size you wish to reduce them. At “RESIZE OPTIONS” located at the top right of the page, you can select one of the following resize options:

free online image resizer

By percentage: here you can scale your images to a certain percentage of the original size (25% smaller, 50% smaller, 75% smaller, 25% bigger, 50% bigger, 75% bigger).

By pixels: here you can make the width or height of your images a certain amount of pixels.

Note: No matter which size you choose, if you check the “Maintain aspect ratio” option, the aspect ratio of your images will be correct. For example, if you choose a width of 800, then a photo with a size of 1280 x 720 will still get the correct aspect ratio of 800 x 450.

The aspect ratio of a picture describes the proportional relationship between the picture’s width and its height.

But if you wish your images to be exactly as you specified, you can uncheck this option.

6. As soon as you have made your choices, click on that ”Resize IMAGES” button at the bottom of the options menu.

Pixellair will now resize your images.

The last step will be a window that pops up, telling you that all the images have been successfully resized. You are now able to download them to your computer in a zipped file, re-edit what you just did or create a whole new batch. This zip file contains your images and you will have to unzip the zip file to extract your images. Pixellair is a free online image resizer tool.

How to Compress Multiple Images at Once Using Pixellair

Pixellair is also a free online image compressor tool. Pixellair allows you to quickly compress a large amount of pictures. Click or just drag and drop your images on the drop zone.

1- After your images have all been uploaded, you can specify the “image quality factor” or just leave it as auto. Note that, image quality factor should be between 1 to 90. Greater number means better quality.

2- Then you need to press the “Compress IMAGES” button located at the top right of the page to finish the compression process.

free online image compressor tool

As soon as you press the compress button, your optimized images are ready to download. You can download all of your images in a zip file.