Keep a passage or join a sequence
Use Trim one file to keep an interval from a recording, or Join files to place several intervals one after another. Both modes use the same waveform and time controls. Joining does not mix voices together or create overlapping tracks: the first selected passage ends before the next begins. Choose local audio you want to edit and load it from your device.
Choose a range and listen
After a file loads, its waveform shows the full recording. Drag either handle to change the part you want to keep, or enter Start and End in seconds. Decimal points and commas are accepted. A focused handle also responds to Left and Right in steps of 0.01 seconds, or one second with Shift; Home and End move toward the recording boundaries. Play selection lets you check the cut before creating the output. Leave a small margin around speech to avoid clipping a syllable.
Example: keep the middle of one clip
In Trim one file, load a two-second recording. Set Start to 0.5 and End to 1.5, then play the selection. Create WAV produces one second of audio from the middle of that file. Listen to the result player and save the WAV. Change Start to 0.75 and the previous result disappears: create it again for the new 0.75-second selection. Your original file on disk is never changed by these edits.
Example: join two recordings
Choose Join files and load two recordings, each at least three seconds long. Set the first clip to 0.5–1.5 seconds and the second to 1–2 seconds. Create WAV gives two seconds: one second from each clip, top to bottom. Move the second clip up and create again to reverse the order. The arrows change the sequence; they do not mix the sounds.
Check and save the finished WAV
Create WAV prepares the selected passages as one playable file. The result player uses the same bytes that Save WAV downloads. Check the joins and the displayed duration before saving. Any range, order, file, or mode change clears the old result, so it cannot be mistaken for the current edit. Trim mode exports only the first clip; other loaded clips remain available when you return to Join files. In Trim mode, choosing another file replaces the list only after it loads successfully.
Which files and sizes can I use?
The editor checks file content and relies on your browser to decode it. WAV, MP3, M4A, AAC, Ogg, FLAC, and audio-only WebM may work when their codecs are supported; a familiar extension is not a guarantee. Video and streaming links are not supported. Use at most 10 files, 20 MiB per file, 30 MiB combined, and three minutes of total source audio. These limits apply before trimming. Files must decode to mono or stereo.
Does exporting change the sound?
The output is uncompressed 16-bit PCM WAV at 44.1 kHz. Other source sample rates are converted during decoding. Mono stays mono unless joined with stereo, when the mono signal is copied to both channels. There is no volume boost, normalization, crossfade, or automatic silence removal. Samples outside the PCM range are limited and reported; a fully silent selection is also reported. A sharp cut can produce a click, so listen and adjust the endpoints. WAV can be much larger than compressed input.
Can I cancel or recover my editing session?
Cancel discards the current operation and keeps the previously loaded clips. Your browser may finish decoding its current file before a new load can begin. New input also makes an older operation obsolete, preventing a late result from replacing the newer edit. Audio lives in this tab’s memory and is not restored after reloading or closing it. Save the finished WAV before leaving. Clear removes the loaded clips and the current result.
Why is a file rejected or a range invalid?
A damaged file, unsupported codec, video track, or exceeded source limit can prevent loading. A failed batch leaves the previous clips available rather than keeping a partial import. Start must be zero or greater, End must be later than Start and within the source duration, and the range must contain at least one audio sample. Try a short WAV if decoding fails. Files are processed in this browser and are not uploaded by this editor; saving does not publish your audio.