Better files start with a little understanding.
Useful answers for the moment a format, file size, or quality setting gets in your way.
How much space does an MP3 need?
Bitrate, duration, and a calculator that makes the tradeoff clear.
MP3 vs WAV: small file or editing master?
When each format makes sense—and why converting to WAV does not restore quality.
What “processed on your device” means
Where your file goes, what gets downloaded, and why large jobs can fail.
Measured browser conversion times
25 MB and 100 MB audio, with methodology and downloadable raw results.