Audio Editor: Trim, Reorder and Merge Audio Clips
Need to cut the dead air and breaths out of three voice notes, join two recordings into one file, or even out a long interview? This tool does it in the browser. Desktop editors need installing and online ones upload your audio; here nothing is sent anywhere. Load up to eight clips, trim each to its own start and end seconds, optionally let it detect and strip silence against a threshold, normalize the result, then download stereo 44.1 kHz WAV or MP3. Input formats depend on what your browser can decode.
Step by step
- Choose up to eight audio files; the limits are 50 MB and ten minutes in total.
- Type start and end seconds for each clip, reorder with the up arrow and drop anything you do not need.
- If the recording has breaths and pauses, turn on Trim silence automatically.
- Match the threshold to the recording: raising it trims less, lowering it trims more.
- Set the minimum silence that counts as trimmable, and how much padding to keep at each cut.
- Read the analysis line: seconds removed and pieces produced are shown before anything is rendered.
- If the recording is quiet, turn on Normalize level and pick a −1, −3 or −6 dBFS target.
- Set volume and fade duration, then choose WAV or MP3 as the output format.
- Render, listen back, then download.
Example scenario
Podcast host Aylin records the intro, three segments and a closing jingle on different days. She drops all five files here, trims the silence at the start of each segment, raises the music bed to 80 percent and adds half a second of fade. The merged WAV is ready in seconds and she uploads it to her hosting platform. The original recordings stay on her laptop.
Check your result
Listen to the whole result before publishing; fade timing errors are common. If silence trimming is on, check the start and end of the first and last sentence for a clipped word and raise the padding. If a clipping warning appears, lower the volume rather than relying on normalization. If the browser lacks Web Audio the tool disables itself and says so.
Frequently asked questions
What exactly does silence trimming remove?
It treats 10 ms windows that sit below your threshold as silent. Runs of silent windows are merged, and anything longer than the minimum silence you set is cut, keeping the padding you chose at each edge.
Does normalizing also raise the noise?
It raises whatever the peak is, so background hiss in a quiet recording gets louder too. If you only want more volume, leave normalization off and use the volume control instead.
Do fades clash with silence trimming?
No. Fades sit at the head and tail of each clip, and cuts made by trimming get their own 5 ms anti-click ramp, so the joins do not tick.
The MP3 sounds rough. What should I do?
MP3 is encoded at 128 kbps, which is not much for a bright source. Try the WAV output when you need the file to stay clean.
Keep an original copy before processing your file. Examples are illustrative; results depend on your document.
Where can you use this on social media?
Prepare your own narration for YouTube, Reels/TikTok or Facebook videos. The audio editor offers trimming, joining, levels and fades, not video editing or AI background-noise removal. Video-to-MP3 extracts audio only from an uploaded file. A separate video editor is needed to add the audio to a video; check music rights.
Sources checked:Official platform guidance