Cut and trim audio locally. Remove podcast intros, shorten lectures, or prepare clean audio for transcription and subtitles.
An audio trimmer is a tool for cutting specific sections from an audio or video file. It is useful for removing silence at the beginning of a recording, cutting out a podcast intro, shortening a lecture, or preparing a clean file for transcription and subtitles.
Original: 00:00–01:15 intro music and sponsor message → Keep: 01:15–28:40 main interview
Cut repeated intros before creating a transcript, exporting highlights, or sending the file for review.
Original: 90-minute recording → Keep: 12:30–48:10 relevant chapter for students
Reduce long recordings to the section that should be transcribed, subtitled, or uploaded to an LMS.
Unlike traditional online converters, our trimmer uses your browser’s native AudioContext. Everything happens directly on your device. The trimmed result can be exported as a high-quality uncompressed WAV file or as a compact MP3 file. No uploads, no waiting queues.
| Format | Best for | Important to know |
|---|---|---|
| WAV | Transcription, editing, archiving, and clean intermediate files | WAV is uncompressed and larger, but ideal when the file will be processed further or used for subtitles. |
| MP3 | Sharing, quick review files, and smaller downloads | MP3 is compressed and compact. Good for approvals, but not always the best master file for further processing. |
A cleanly trimmed clip saves time during transcription. Remove intro music, long pauses, off-topic questions, duplicate starts, or empty endings before creating SRT or VTT subtitles with the Subtitle Generator.
Cut music, silence, and irrelevant passages before subtitle creation.
Use normalization when recordings are too quiet and should be easier to hear before export.
Export only the relevant section and then create AI subtitles in Subvideo.
Use this trimmer to keep only the relevant audio section. Then upload the cleaned file to the Subtitle Generator and create SRT, VTT, translations, or burned-in subtitles.
Open Subtitle GeneratorBecause decoding and trimming happen directly in your browser on your own device, your files stay private. For simple cuts, the file does not need to be uploaded to a server.
Drag and drop your audio or video file, or upload it from your device.
Drag the blue waveform handles or enter the exact start and end time.
Click “Process audio” and download the file in MP3 or WAV format.
The trimmer supports common browser-readable audio formats such as MP3, WAV, M4A and AAC, plus the audio track from MP4, WebM and MOV video files.
Because the file is processed locally in the browser and not uploaded, there is no fixed upload queue. Very large files still depend on the browser, memory, and device.
Yes. Simply upload MP4, WebM, or MOV videos. The tool reads the audio track and lets you export the selected section.
Yes. The entire trimming process runs locally in your browser. No data is transferred to our servers for the cut.
Use WAV if you want the best intermediate file for transcription or further editing. Use MP3 if the file should be smaller and mainly shared quickly.
Yes. If you remove intros, silence, music beds, or irrelevant sections, the later transcript is easier to review and the subtitle file contains less unnecessary text.
Yes. Export the trimmed file and then upload it to the Subtitle Generator or Subvideo Studio to create SRT, VTT, translations, or burned-in subtitles.