How can I reduce JPEG file size in KB on Windows 11 without losing quality?

This is a quick way to how to reduce jpeg file size in kb without any additional software.

It uses Windows' built-in email sharing feature, allowing you to compress images in just a few seconds, instantly reducing file size and saving a compressed copy.

Instructions: Select a group of JPEG images. Right-click them, select “Share,” and then choose “Outlook.” A dialog box will pop up asking if you want to reduce the image size. Select a size (such as “Medium: 1024 × 768” or “Small: 640 × 480”). This will automatically reduce the file size of the attachments to under 100 KB.

Windows will add the perfectly resized images as attachments to a new email draft.

If you need to upload these images to a website, simply save the attachments to a folder! This quickly helps you how to reduce jpeg file size in kb, effectively solving the problem of overly large JPEG files.

This method is particularly useful for images intended for email, website uploads, or online sharing, especially when you don’t want to install any compression tools.