If you're looking for an online editor that can automatically improve and compress your audio and video files, HitPaw Online is a good all-purpose option. It's got an AI-powered audio enhancer for noise reduction and a video compressor for lossless compression. The interface is easy to use and good for a variety of tasks, including social media management, marketing and education.
Another good option is ai|coustics, which converts voice recordings into studio-quality audio with options like aggressive background noise reduction and echo cancellation. It can handle more than 40 file formats, and you can process files in batches, too, so it's good for podcasting, video editing and e-learning.