Audio Trimmer

The preview draws one waveform lane per channel, labelled L and R for stereo or Mono for single-channel files, on a time ruler that adapts as you zoom. Silences show up as flat lines, speech as clusters, and drum hits as sharp peaks, so the right place to cut is usually easy to see.

While the audio plays, a level meter shows how loud each channel is in dBFS, with a peak marker that turns red near 0 dB, the point where audio clips. Frequency bars and a scrolling spectrum show where the energy is, which helps you catch a breath, a click or a burst of noise before it ends up in your clip.

Drag across the waveform to select the part you want, then refine it. Each edge has a handle you can drag, or move with the arrow keys in 0.1-second steps (1 second with Shift). The [ and ] keys set the start or end at the playhead, and the timecode shows the position to the millisecond.

Zoom in to see individual syllables or beats, and an overview strip appears so you can move around a long file. Play hears only the selection, Loop repeats it while you adjust the edges, and playback speed from 0.5× to 2× lets you listen closely to a tricky edit.

When a file loads, the trimmer sets the export to match it: the same format, a matching bitrate for compressed files, and the same bit depth for WAV and FLAC. A trimmed WAV comes out as WAV, and a 128 kbps MP3 does not quietly become a much larger file.

WAV and FLAC exports are lossless. MP3, M4A, AAC and OGG are re-encoded after the cut, as with any tool that decodes audio, so choose WAV or FLAC if the clip will be edited further, and MP3 or M4A when it is ready to share. M4A, AAC and OGG are offered where your browser provides those encoders.

The trimmer works in Safari, Chrome and other current mobile browsers. On an iPad the preview and controls sit side by side; on a phone they stack, and the player controls rearrange into full-width rows with larger buttons.

Voice memos and recordings saved on your phone open straight from the file picker, the Trim action stays in reach at the bottom of the screen, and the finished clip downloads to your Files app or Downloads folder.

The Audio Trimmer keeps one continuous section of one file and does not add fades. To remove a part from the middle, trim the two pieces you want and combine them with the Audio Joiner, or make the cut in the Audio Editor, which also handles fades and effects.

To take out every pause in a recording, use the Silence Remover. To make several clips from one long episode, use the Podcast Clip Maker. To change the format without cutting, use the Audio Converter, and to even out loudness, use the Audio Normalizer.