Free tools for recording, scripts & subtitles

Pull the soundtrack out of an MP4 or MOV as MP3 - in your browser, nothing uploaded.

Turn WhatsApp .opus, Telegram .oga and old .amr voice messages into MP3 - in your browser, nothing uploaded.

Is your recording clear enough to transcribe? Noise, signal-to-noise and clipping in seconds, plus a microphone test.

Enter the length of your audio and see the pay-as-you-go price - from $0.83/hour.

Paste a script and see the credits, price and speech length across voice tiers.

How long is your script when read aloud? Word & character counts, adjustable pace.

Convert between subtitle formats, or turn captions into a speaker-labelled transcript. Nothing is uploaded.

Resync out-of-sync captions - shift SRT/VTT timestamps or rescale for a new framerate.

Flags captions that read too fast (CPS), run too long, or use too many lines.

See which captions the Reels or TikTok interface will cover, and download a 1080x1920 overlay.

Rough timestamps into a 0:00 Title list for YouTube, or Podcasting 2.0 chapters as JSON or an RSS tag.

Count your um's and crutch words in 12 languages - from text or an SRT - then strip them out.

Record from your microphone and download the file. No account, no app, nothing uploaded.

Dictate instead of typing, right in your browser, then copy the text anywhere. Chrome, Edge and Safari.

Scroll a script at the pace you actually speak, with mirror mode for prompter glass.

Play a lecture or podcast at up to 3x with normal pitch, and see what each speed saves.

Shorten the dead air in a recording - see every gap on the waveform before it goes.