Pro Audio Editor Online Free — All-in-One Audio Suite

All-in-one audio editor: trim segments, adjust speed, add fades. Professional tools in your browser. Free, no upload. MP3, WAV, OGG supported.

Trim Multiple Segments in One Pass

The Pro Audio Suite combines trimming, speed adjustment, and fade effects in a single professional interface. Select multiple segments from your audio to keep, and File Studio joins them together seamlessly. This eliminates the need to switch between separate tools for each editing operation, streamlining your workflow for podcast editing, interview cleanup, and music production.

Speed Control With Pitch Preservation

Adjust playback speed from 0.25x to 4x while maintaining the original pitch of your audio. The time-stretching algorithm uses phase-vocoder processing to ensure voices sound natural at any speed. This is essential for transcription work, language learning, and musical practice where pitch accuracy matters.

Frequently Asked Questions

What can the Pro Audio Editor do?
It combines trim, speed change, and fade effects in one interface. You can select multiple segments to keep, adjust playback speed, and add fade in/out — all processed locally in your browser.
Are my files uploaded to a server?
No. File Studio is built on a strict local-first architecture. Every PDF operation — merging, splitting, compressing, redacting — runs entirely inside your browser using JavaScript. Your files never leave your computer. You can even disconnect your internet after the page loads and the tools will continue working perfectly.
Is File Studio completely free?
Yes, 100% free with no limits. There are no file size caps, no daily limits, no watermarks added to your output, and no account or email required. All tools are free forever.
Does it work on mobile and tablet?
Yes. File Studio is fully responsive and works on Android and iOS browsers. All processing happens locally on your phone's or tablet's hardware.

More free tools