Free Audio, Video and Subtitle Tools in Your Browser

Extract the audio from an MP4, MOV, MKV or WEBM video and save it as MP3.

Turn iPhone voice memos and other M4A files into MP3s that play anywhere.

Turn WhatsApp and Telegram voice messages (OPUS, OGG) into MP3s that open anywhere.

Make WAV recordings from digital recorders up to 10 times smaller.

Remove numbers, timestamps and tags from a subtitle file and get clean text.

Convert subtitles from SRT to WebVTT and back, with the right timings.

Why the conversion happens in your browser

Privacy: your file isn't uploaded to our servers. Your browser reads it from your device and creates the new file right there.
No uploads, no queues: your file doesn't travel over the internet, so the speed depends on your device and the length of the file, not on a server.
Free, no account: no limit on the number of files, no watermark, no email address to hand over.
One click to text: after the conversion, TraScrivo can transcribe the audio without you having to choose the file again.

Are the tools really free?

Yes. Convert as many files as you like, with no account and no watermark.

Are my files uploaded anywhere?

No. The conversion happens in your browser: the file never reaches our servers and the result is created on your device.

Do the tools work on my phone?

Yes, on Android and on iPhone or iPad with an up-to-date browser. For very long files, a computer is faster and has more memory.

How is this different from transcription?

These tools change a file's format. Transcription turns speech into text: after converting, just press “Transcribe to text”.