Guide5 min read
How to Compress Audio Files Online (Free, No Upload)
Shrink an MP3, WAV, M4A, OGG, or FLAC file down to a smaller size in your browser using an adjustable quality slider — no upload, no account.
Audio trimmer
Cut an audio file down to the exact clip you need — free, instant, and private. Nothing is uploaded.
Drop an audio file here, or click to browse
MP3, WAV, M4A, OGG, or FLAC — up to 2GB
✓Free forever
✓Runs locally
✓No account
✓No watermark
Everything you need to trim audio fast
Precise range slider
Drag two independent handles on the timeline to set your exact start and end point, down to a tenth of a second.
Live playback while you drag
The audio preview jumps to your start handle as you drag, so you can hear exactly where the trimmed clip will begin.
Keeps your original format
Drop in MP3, WAV, M4A, OGG, or FLAC — the trimmed result is saved in that same format, not forced into a different one.
Instant download, no waiting on uploads
Because there's no upload step, trimming starts the moment you press the button — no queue, no server-side processing time.
Private by design
Your audio never leaves your device. PixelTools runs entirely in your browser using ffmpeg.wasm — zero server uploads, zero data stored.
Three steps to a trimmed clip
- 1
Upload your audio file
Drag and drop an audio file onto the page, or click to browse. Supports MP3, WAV, M4A, OGG, and FLAC files up to 2GB.
- 2
Drag the range handles to your clip
Use the two-handle timeline slider to pick the exact start and end point of the section you want to keep.
- 3
Download your trimmed audio
Your clip is cut instantly in your browser and saved in the same format you uploaded. Nothing is uploaded to any server — your file stays on your device.
Built for anyone who works with audio
Whether you are cutting a highlight from a podcast recording, sharing one moment from a voice memo, or removing dead space from a clip — PixelTools trims it in your browser in seconds.
Podcast editing
Cut a raw recording down to the segment you actually want to publish, without opening a full audio editor.
Voice memos and interviews
Trim a phone voice memo or interview recording to just the relevant answer before sharing it with a coworker or friend.
Students and educators
Cut lecture recordings and audio notes down to the section that matters, for faster review or sharing.
Removing dead space
Trim off a silent intro, a long pause, or extra recording at the end of a clip before sharing or converting it elsewhere.
Frequently asked questions
Is PixelTools audio trimmer free?
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Yes, completely free with no limits. Trim as many audio files as you want, as often as you want. No subscription, no trial, no account required.
Are my audio files uploaded to a server?
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No. PixelTools trims audio entirely in your browser using ffmpeg.wasm. Your files never leave your device — there is no server upload, no cloud processing, and no data stored anywhere.
What audio formats can I trim?
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PixelTools accepts MP3, WAV, M4A, OGG, and FLAC. The trimmed output is saved in the same format as the file you uploaded — no forced conversion.
How precise is the trim?
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The range slider lets you set start and end points to a tenth of a second. Trimming re-encodes the clip so the cut lands on the exact point you chose, rather than snapping to the nearest block boundary.
Will trimming reduce my audio's quality?
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PixelTools re-encodes the trimmed section at a high-quality setting for your format (for example, MP3 at a high VBR quality, or lossless PCM for WAV and FLAC), so the difference from the original is minimal to inaudible for typical listening.
What is the maximum file size I can trim?
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PixelTools can handle audio files up to 2GB. Actual processing time depends on your device's performance since everything runs locally rather than on a server.
Can I trim an audio file to keep only the middle section?
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Yes. Drag the left handle to your desired start point and the right handle to your desired end point — everything before the start and after the end is removed, keeping only what's between them.
How is this different from other online audio trimmers?
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Most online audio trimmers upload your file to a server for processing, which is slow for large files and means your audio leaves your device. PixelTools trims everything locally in your browser with no upload and no usage limits.
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