640x480 (VGA resolution) remains useful for email images, legacy system compatibility, compact web images, and situations where bandwidth is limited. This 4:3 aspect ratio image is small enough to load quickly on any connection.
At 640x480, a JPEG image is typically 20-50KB at 80% quality, making it extremely fast to load. This size works well for inline email images, forum posts, documentation screenshots, and any context where compactness is preferred.
With ImgTools, upload your image and resize to 640x480. Crop to 4:3 first if your source has a different ratio.
All processing happens locally in your browser.