How do you convert an image into KB size online?

To convert an image into KB size online, you can use various image compression websites such as TinyPNG, CompressJPEG, or ImageResize.org. Simply upload your image, and these tools will automatically reduce its file size while maintaining acceptable quality. After compression, you can download the resized image, which should now be in the desired KB size range. Always check the final size to ensure it meets your requirements.