What MP3 is and why it dominates
MP3 (MPEG-1 Audio Layer III) has been the default consumer audio format for 25+ years. It's lossy compression — a 10-minute conversation that would be ~100 MB as raw WAV is ~10 MB as a 128 kbps MP3 — but for spoken word at typical bitrates the loss is inaudible to humans and irrelevant to a transcription engine. That combination of tiny files plus universal device support is why MP3 is what podcast feeds publish, what voice memo apps default to on most Androids, and what you get when you "Save as MP3" in any audio editor.
Structured Markdown vs plain transcript
Most MP3 transcribers spit out one giant paragraph of text. MDisBetter outputs Markdown: a top heading, sub-sections where the topic shifts, speaker labels (**Speaker 1:**, **Speaker 2:**) when more than one voice is present, and inline timestamps ([00:14:23]) at speaker turns so you can jump back to the audio. That structure is what makes the transcript useful — for an LLM summarising a 90-minute episode, for a journalist quoting an interview, for a student grepping a lecture for "midterm".
Browser-uploadable, no app install
Drop the MP3 into the browser, click Convert, download the .md. No installer, no signup for short clips, no command line. For an automated batch pipeline (a podcast network archiving every episode), the open-source path is faster-whisper running locally; for one-off conversions and when you want speaker labels and structure without setting up a Python environment, the web tool is the shortest distance from MP3 to Markdown.