Easily Compress PNG Images on a Desktop and Online

PNG, stands for Portable Network Graphics, is a commonly used image format. Though it is a lossless file format, it does compress visual content. However, PNG image files always come with larger file size. In order to save storage space or publish online quickly, you might need to compress PNG image files regularly. Therefore, this article expects to introduce four ways to help you compress PNG image files on Windows, Mac and Linux. Some of them even can compress images by 70% without blurring.

• Part 1: Easiest Way to Compress PNG
• Part 2: Compress PNG Image on Windows
• Part 3: Compress PNG Image on Mac
• Part 4: Compress PNG on Linux
• Part 5. FAQs of Compressing PNG

Part 1: Easiest Way to Compress PNG

If you do not like to install software to your computer, Apeaksoft Free Online Image Compressor is the best option to compress PNG online. It is not only easy to use, but also able to shrink images from MB to KB without losing quality.

1. Compress PNG images online while preserving transparency.

2. Batch handle up to 40 images without quality loss.

3. Improve the performance using advanced technology.

4. Available to all machines running Windows, Mac and Linux.

In a word, Free Online Image Compressor is the easiest way to compress PNG image file size.

How to Compress PNG Online

Step 1Go to the website of Apeaksoft Free Image Compressor, and click the Add Images to Compress button to add images to the online PNG compressor.

Step 2After the website compresses the PNG files, you can click the Download All button to export the PNG files to your computer.

Part 2: Compress PNG Image on Windows

If you prefer to compressing a PNG image manually on PC, the built-in Paint program is a simple choice. With Paint, you can crop your PNG image to decrease the file size or resize the dimension. Moreover, converting PNG to JPG can compress the original image further.

Compress PNG with Windows Paint

Step 1 Locate the PNG image that you wish to compress to JPG. Right click on the file, select Open with and choose Paint to open it in Windows Paint.

Step 2 Click the Resize and skew button on the top left side. Then, input a proper resolution in the Pixel panel and click the OK button.

Step 3 Finally, click the File menu, select Save as, and choose JPEG picture. On the popup dialog, navigate to a specific directory to save the output, drop a name, and save the compressed PNG to your computer.

Part 3: Compress PNG Image on Mac

When it comes to compressing PNG images on a Mac, you have less options than doing it on PCs. There are several image editors offer the Mac version, such a Photoshop. It allows you to resize a PNG image and compress it.

Step 1 Run your Photoshop and drag the PNG image into the program.

Step 2 Click and expand the Image menu and select Image size to open the Image Size dialog. Adjust Width and Height to a smaller size to compress PNG. Check Resample and select Bicubic Sharper, which preserve the sharpness while compress an image.

Step 3 Hit OK button to close the Image Size dialog. If you want to compress PNG image without losing quality, export the image directly. Otherwise, you can compress PNG to JPG to shrink the file size.

More solutions to resize a photo on Mac, you can check it here.

Part 4: Compress PNG on Linux

Although you can compress PNG images while preserving transparency using TinyPNG and other web apps on Linux, command lines are still the prevalent method. We use Pngquant as the example to show you the procedure.

Step 1 Install the PNG compressor by executing the command line $ sudo apt install pngquant.

Step 2 Show the original PNG file size with the command $ du -sh pngimage.png. Replace pngimage.png with the filename of your PNG image.

Step 3 Compress your image with the command $ pngquant pngimage.png. Then the compressed file will be named pngimage-fs8.png.

Step 4 Check the compressed file size with $ du -sh pngimage-fs8.png. You will find the PNG file size becomes much smaller. According to our test, the command line can compress a 152KB PNG image into 48KB.