Audio & Video Tools
Transcribe, caption and convert audio and video — entirely in your browser. Your media never leaves your device.
Tools in this category
Video & Audio Transcriber
Speech to text and SRT/VTT subtitles, with an editor and synced playback.
Audio Transcriber
A focused flow for podcasts, interviews and voice notes.
SRT Subtitle Editor
Open an existing SRT/VTT, edit timings and text, re-export.
SRT ⇄ VTT Converter
Convert subtitle files between SRT and WebVTT.
Burn Subtitles into Video
Render captions permanently onto a video.
Extract Audio from Video
Pull the audio track out as MP3/WAV.
Private by design
Every tool in this category is built on the same principle as the rest of Toolsfully: your files are processed locally in your browser, not uploaded to a server. The transcriber uses an on-device AI speech model (downloaded once and cached), and the subtitle engine that powers it is shared across these tools so behaviour stays consistent. We describe exactly how each tool works rather than making absolute security claims.