Process Audio Files Online
Use the online audio processing tools
I’ve developed using the Web Audio API. Just upload the file, process it, and download the newly created file. You can increase loudness
MP3, WAV, M4A, AAC, and any other lossy or lossless audio file format. If you’d like to learn how to create web audio processing tools like this, checkout my blog
where there are step by step tutorials on how to process audio.