Free Audio Trimmer — No Upload, No Software, No Sign-Up

You want to trim an audio file. You don't want to install software. You don't want to upload your recording to a random server. You don't want to create an account. You just want it done.

Here's what to look for in a free audio trimmer that respects all three of those constraints — and the best tool that fits them.

What "no upload" actually means

Most online audio editors do upload your file, even if they don't say so clearly. Your audio hits their servers, gets processed there, and a download link comes back to you. For most files that's fine — but for private recordings, interviews, voice memos, or anything sensitive, you want processing to happen on your device only.

A true no-upload trimmer uses WebAssembly or the Web Audio API to run the processing inside your browser. Your file never leaves your computer.

What "no software" means

No download, no installation, no executable to run. Just a web page. Works on any modern browser (Chrome, Edge, Firefox, Safari) without installing anything.

The best free audio trimmer with no upload and no software

MP3 Studio checks every box:

• No upload — runs entirely in your browser using WebAssembly. Your file never reaches any server.
• No software — open the web page, drop your file, done. No install, no extension, no plugin.
• No sign-up — no account, no email address, no trial period.
• Multiple cuts — most free trimmers only support one cut. MP3 Studio lets you mark as many sections as you want to remove.
• No size limit — because processing runs on your device, there's no server-side cap.
• No watermark — the exported file is clean.

Supported formats

MP3 Studio accepts MP3, WAV, FLAC, M4A, AAC, OGG, and OPUS. All export to MP3.

Works best on desktop

For best performance, use Chrome or Edge on a desktop or laptop. The WebAssembly audio processing is more stable on desktop browsers, especially for large files.

Try it free — no upload, no software, no sign-up →