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

If you are wondering how to reduce jpeg file size in Windows 11. Windows 11 has a newer, hidden feature designed exactly for this. It lets you compress JPEGs without changing their resolution. Here's how to use it:

Step 1: In File Explorer, right-click on any JPEG file.

Step 2: Select the Share icon from the context menu.

Step 3: In the Share window that pops up, look for the "Compress size" dropdown menu at the bottom (this feature is rolling out gradually, so you might not see it yet if your PC isn't fully updated).

Step 4: You can choose between Low, Medium, or High compression levels. In tests, a 1MB file was reduced to just 147KB on the "Low" setting while keeping the original 4K resolution.

Step 5: After selecting a level, click the destination (like "Mail") to share the compressed copy.

If you don't have the Share UI update, how to reduce jpeg file size in Windows 11? The most reliable built-in method is to use the classic Microsoft Paint, or to use the Photos app's "Save a copy" feature which lets you lower the quality slider, but you specifically ruled those out.