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Online Image Compressor—Reduce Image Size Online

by Hung Nguyen

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Use our online compressor tool to reduce the size of your images. You don’t need to register for an account to use our online tool.

Images can get quite bulky, depending on the source of origin. Regular photos taken from your smartphone can go up to 2-3 MB, making it a hassle to store or share in large batches.

Instead of going through images one by one to reduce the aspect ratio to cut down on individual sizes (I did this back in the day!), you can use the Smallpdf Image Compressor to get the job done, without having to open each image.

How to Use the Online Image Size Compressor

  1. Open the Image Compressor page.

  2. Drag and drop your image into the toolbox.

  3. Click ‘Basic Compression’ and then ‘Choose Option’ to begin.

  4. On the following page, click ‘to JPG.’

  5. Choose ‘Convert Entire Pages.’

  6. And you’re set. Download your new and compact image.


Check out the Smallpdf Image Compressor in action!

The method above entails changing the image you upload to PDF format, shrinks it by removing unnecessary data, and then changing the file to JPG, which is a compressed image format.

The compression level is dependent on the data for each image. However, the JPEG images that you get from the image compressor will be significantly smaller than the original image.

Easy Image Compression Service


As you can see, our online Image Compressor works on any modern browser (for free). An account is not needed on the spot—you just have to go to the tool page and upload an image to initiate the process.

If the image size is not reduced to your liking, and you don’t mind further lossy compression, you can try to sign up for a Pro Smallpdf account. With this, you can opt for the ‘Strong Compression’ option, which will cut the file size even further. Whatever you need to get the most optimal image for your needs!

Hung Nguyen
Hung Nguyen
Content Marketing Manager