Audio Trimmer
Trim and cut audio files to a specific time range
How to Use Audio Trimmer
- Open Audio Trimmer above — it loads instantly, no signup or download required.
- Provide your input (paste text, drop a file, or type directly into the tool).
- Get your result instantly — everything is processed locally in your browser and nothing is uploaded.
- Copy or download the output. Refresh the page to clear all data from memory.
About Audio Trimmer
What this page solves
Trimming an MP3 or WAV usually means uploading it to an unknown server or installing Audacity. This tool trims audio directly in your browser using the Web Audio API and exports a clean file.
Audio Trimmer cuts MP3, WAV, M4A and OGG files to an exact start/end range using the browser's Web Audio API — `decodeAudioData` to load the file, `AudioBuffer` slicing for the trim, and a WAV or MP3 re-encoder for export — so a 90-minute recording can be sliced to a 15-second highlight without an upload or a desktop install. A live waveform visualization lets you zoom to the frame and drop precise in/out points; keyboard shortcuts (arrow keys for fine adjustment, spacebar to preview) make it usable for real editing, not just a one-shot trim. It exists for the practical audio workflows people hit weekly: pulling a 30-second sample from a podcast for social, chopping the intro off a voice memo before sending, making a custom ringtone under the 30-second iOS limit, or clipping royalty-free music to fit a Reel. Chain it with the Audio Volume Booster to fix a quiet clip after trimming, or the MP3 to WAV Converter for format conversion. Runs entirely in your browser — no upload, no signup, no logs.
Common Use Cases
- Trim a voice memo down to the useful 20 seconds before sending
- Make a custom iPhone ringtone under 30 seconds
- Cut a podcast highlight clip for Twitter/LinkedIn
- Trim royalty-free music to fit a 60-second Instagram Reel
- Slice a lecture recording into topic-based chapters
Related tools in Audio Tools
- Tone GeneratorGenerate pure sine, square, triangle and sawtooth wave tones at any frequency
- BPM TapperTap to the beat to detect tempo in beats per minute
- Text to SpeechConvert text to speech using the Web Speech API
- Audio Waveform VisualizerUpload audio and see its waveform visualized in real time
See all Audio Tools.
Frequently asked questions
How to use Audio Trimmer?
1) Open the tool. 2) Enter or upload your input. 3) Get your result instantly. Everything happens locally — nothing is uploaded.
When should I use Audio Trimmer?
Use it to trim a voice memo, cut the intro/outro off a podcast clip, prepare a ringtone, or clip a sample for a video edit — with the file never leaving your device.
Is Audio Trimmer safe?
Yes. Audio Trimmer runs 100% in your browser. Inputs are never uploaded, stored, or logged — safe for confidential content.
Will quality be affected by Audio Trimmer?
Operations preserve audio fidelity unless you explicitly re-encode to a lossy format.
What formats does Audio Trimmer support?
Audio Trimmer supports MP3, WAV, OGG and any format your browser can decode
Is Audio Trimmer free?
Yes — Audio Trimmer is completely free, with no registration, no watermarks, and no usage limits.
What formats can I trim?
Input: MP3, WAV, M4A, OGG, FLAC (anything `decodeAudioData` supports). Output: WAV (lossless) or MP3 (re-encoded at 128–320 kbps).
Will trimming re-encode and lose quality?
WAV export is lossless — samples are copied byte-for-byte. MP3 export re-encodes once and adds a small generation loss; export at 256 kbps or higher to make it inaudible.
How long a file can it handle?
Depends on browser memory. Files up to ~200 MB (roughly 3 hours of MP3) load comfortably on a desktop; mobile browsers may cap around 60 minutes.