Cut, delete, speed up and join audio on one timeline, in your browser
Processed in your browser. Nothing is uploaded. Updated on 24 Oct 2026.Drop one or more audio files and they join on one timeline. Drag across any stretch to delete it, keep only it, or speed it up; speed the whole thing with one press, from 0.25× to 4×, with the pitch kept. Undo any step, then save as M4A or WAV. Nothing is uploaded.
Press Choose audio or drop one or more files; several files are joined in order on one timeline.
Click the timeline to place the playhead and press Split here, or drag across a stretch to select it.
Press Delete or Keep only this, pick a Speed for the selection, and use Undo to step back.
Choose Save as M4A or WAV and press Download; the audio is edited in your browser and not uploaded.
The Audio Editor puts the everyday audio jobs on one timeline: joining several recordings, cutting out the parts you do not want, and speeding up a stretch or the whole thing.
Joining. Every file you drop is added to the end of the timeline, in order. Pieces can be moved earlier or later, and files recorded at different sample rates are brought to one rate as they arrive.
Cutting and deleting. Click to place the playhead, or drag across the waveform to select a stretch. Delete removes it and closes the gap; Keep only this throws away everything else; Split here cuts a piece in two at the playhead so each half can be moved or sped up on its own. Every cut gets a five-millisecond fade at each side, too short to hear as a fade but long enough that no join ever clicks. Undo steps back through the last fifty edits.
Speed. Select a stretch and choose a speed, or choose one with nothing selected to change the whole audio: 0.5×, 0.75×, 1.25×, 1.5×, 2×, or any speed from 0.25× to 4×. With Keep the pitch on, the sound is stretched rather than played faster, so a voice at 1.5× still sounds like the same person. Switch it off for the tape effect, where faster also means higher.
Saving. M4A (AAC at 256 kbps) plays everywhere and is small; WAV keeps every sample and is large. MP3 is not offered: browsers have no MP3 encoder built in, and the free ones carry a licence this site does not use.
Everything happens in your browser. The files are decoded, edited and saved on your own device.
Drop the file and choose a speed such as 1.25×, 1.5× or 2× with Keep the pitch switched on. The audio is stretched in time rather than played faster, so voices keep their normal pitch. Any speed from 0.25× to 4× can be typed in as well.
Yes. Drag across that stretch on the waveform to select it, then choose the speed. Only the selected part changes; the rest plays as recorded. Different parts can have different speeds, and each sped-up piece shows its speed on the timeline.
Drag across the part on the waveform and press Delete, or the Delete key. The two sides join with a five-millisecond fade so there is no click. Ctrl+Z undoes the last edit, up to fifty steps back.
Yes. Every file you drop is added to the end of one timeline. Cut, delete or speed up across the joins as if it were one recording, and move any piece earlier or later. Files with different sample rates are matched automatically.
Browsers include no MP3 encoder, and the free MP3 encoders are published under a licence this site does not use. M4A, which is AAC at 256 kbps, plays on every phone, computer and messaging app that plays MP3, at a similar size.
No. Decoding, editing, preview and saving all happen in this browser tab on your own device. The files are never sent to a server, and closing the tab discards everything except your chosen settings.
Still stuck? Ask about Audio Editor and anybody who knows can answer. No account needed.
Same job, other tools: Frequency Generator – Generate a steady test frequency for speakers, headphones or instruments · Sweep Tone Generator – Sweep smoothly between two frequencies over a time you choose · High Frequency Hearing Check – Screen the top tones, 4 kHz and 8 kHz, ear by ear, then test higher with a tone generator · Audio Sweep Generator – Play a slow logarithmic sweep and hear every rattle in the room.
On the related tools: Mic Test – See your voice on a live waveform and hear it played straight back.
Also works as: Remove Part of Audio.