How to reduce the size of a digital photo with IrfanView

In order to reduce the size of a digital photograph, it is necessary to reduce its physical size and / or resolution. This can be done using the free IrfanView image editor. (On Unix / Linux, use the ImageMagick utility.)

Steps

Step 1. Download and install IrfanView

Step 2. Launch IrfanView and click "File" - "Open"

Step 3. Select the photo you want to reduce the size

Step 4. Left-click on the photo file to select it

Step 5. Click "Open"

The photo will be displayed in the IrfanView window.

Step 6. To reduce the size of the photo, click "Image" - "Resize / Resample"

Step 7. Enter the required parameters and click OK

Step 8. To degrade the quality of the-j.webp" />

Click Options and move the slider to the left to degrade the image quality.

Step 9. After making changes, click "File" - "Save As" and enter a new file name, and then click "Save"

On UNIX / LINUX

1. Download and install ImageMagick utility.
2. An example of its use: convert -geometry x100 src_file_name target_file_name
3. This will create a new 100px image file.

   Advice

   • Images with a width of 500 pixels or more are cropped on WikiHow (default width is 250 pixels).
   • If you have degraded the image quality too much, open the original photo and try again. Save the image at a higher quality this time. You may have to experiment to find the sweet spot between quality and size.
   • If you are using a digital camera that takes photos in its own format (for example, in NEF), you will need to install the extension in IrfanView.

   Warnings

   • IrfanView is free for non-commercial use only.
   • IrfanView does not support Mac OS.