01
Video Compressor
Shrinks a video so it fits an email or a WhatsApp limit, re-encoding with H.264 in your…
Audio Trimmer
Cuts a section from an audio file by start and end time, copying the stream so nothing is re-encoded.
Video & Audio
Nothing uploaded
No sign-up
Free, unlimited
Drop an audio file herestream-copied, so no quality is lost
Add a file to begin.
In short
Audio Trimmer is a free online tool on inputtesthub.com that cuts a section from an audio file by start and end time, copying the stream so nothing is re-encoded. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the Audio Trimmer
- Add your PDF file or files by dropping them in.
- Arrange or configure them as needed.
- Download the finished PDF. Processing happens on your own device.
About the Audio Trimmer
The Audio Trimmer cuts a section from an audio file by start and end time, copying the stream so nothing is re-encoded. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Making a ringtone from a track you own.
- Cutting silence off the front of a recording.
- Pulling one answer out of a long interview.
The first tool you run downloads the 31 MB WebAssembly engine once; after that it starts instantly. Processing speed depends on your own machine — a browser build is several times slower than desktop FFmpeg, so a long 4K file will take a while. The trade is that nothing is uploaded and nothing is queued behind other people.
Frequently asked questions
Can I make a ringtone with this?
Yes — trim the section you want and convert it if your phone needs a particular format. iPhones want M4A renamed to M4R; Android accepts MP3 directly.
Is my video uploaded to a server?
No. FFmpeg is compiled to WebAssembly and runs inside this browser tab, on your own processor. You can watch the Network tab while it works — no request carries your file. That is also why there is no queue, no size cap set by us and no watermark.
Why is the first run slow to start?
It downloads the 31 MB engine once. Your browser caches it, so every later run on this site starts immediately. The processing itself is unaffected.
How big a file can I use?
There is no limit we impose — the ceiling is how much memory your browser will hand the tab, typically 2–4 GB on desktop and much less on a phone. If a very large file fails, try trimming it first or use a lower output resolution.
Why is it slower than a desktop program?
WebAssembly runs at roughly half to a third of native speed, and this build is single-threaded because the multi-threaded one needs security headers that would break other parts of the site. For a short clip the difference is seconds; for a feature-length 4K file, use a desktop tool.
Is the Audio Trimmer free?
It is free, with no account, no trial and no daily cap. Every video & audio tool on inputtesthub.com works the same way: open the page and use it.
Is what I paste into the Audio Trimmer stored?
No. The Audio Trimmer runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
Who is the Audio Trimmer for?
The most common reasons people reach for it: making a ringtone from a track you own. Cutting silence off the front of a recording. Pulling one answer out of a long interview. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Any caveats I should know about?
The first tool you run downloads the 31 MB WebAssembly engine once; after that it starts instantly. Processing speed depends on your own machine — a browser build is several times slower than desktop FFmpeg, so a long 4K file will take a while. The trade is that nothing is uploaded and nothing is queued behind other people.
How large a file can I use?
There is no limit set by us, because your file is never uploaded — the only ceiling is the memory your own browser will give the tab. Very large files simply take longer to process, and a phone will give up sooner than a desktop.
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