Extract Subtitles
File
Drop files here or
Accepted: MP3, AAC, WAV, OGG, FLAC, M4A, ALAC, AIFF, AMR, WMA, WEBM, OPUS
All processing happens in your browser — your files are never uploaded to a server.
Powered locally by ONNX Runtime Web using OpenAI's Whisper Tiny model.
About this Tool
The extract-subtitles tool on AllThatConverter automatically transcribes speech in audio files into text subtitles (SRT, WebVTT, TXT), allowing you to adjust offsets, edit transcriptions inline, and download the results. Operating entirely in your browser using local Web Workers with a client-side Whisper model, it ensures absolute privacy by never uploading your audio files to any server.
100% Secure Local Processing Active
This tool runs entirely on your device via WebAssembly and browser Canvas. No files are ever sent to any remote server, ensuring complete data security.
How to Use
Select and upload the audio file (such as MP3, WAV, AAC, or FLAC) you want to transcribe.
Wait for the local Web Worker to run the Whisper model and transcribe the audio. Progress (%) is displayed in real-time.
Review the generated interactive subtitles, adjust timing offsets, edit text inline, and download the results as SRT, WebVTT, or TXT.
Core Scenarios & Use Cases
Secure Meeting & Interview Transcription
Transcribe confidential business meetings, academic research interviews, or private legal recordings without security or privacy compliance concerns.
Video Caption File Preparation
Generate compatible subtitle files for video platforms like YouTube. Use the offset sync shifter to easily match timestamps with video playback.
Language Learning & Listening Practice
Load foreign language audio files, click subtitle lines to instantly jump to exact points, and combine with loop controls for perfect listening and speaking drills.
Frequently Asked Questions
No. Once the Whisper AI model is fetched and cached in your browser, the entire transcription executes completely offline using your local computing resources.
You can shift all subtitle timestamps globally using the Sync Shift buttons (-0.5s, +0.1s, etc.) or refine individual start/end times via capture buttons.