Remove noise, compress, and convert audio and video. Free, instant, and completely private. Pick a tool below to start. Convert & Extract Compress & Clean Up No Signup Required · Stays on Your Device · Free to Use What creators say “ I record in my living room. Before Sondra, every episode had fan noise. Now it sounds like I have a studio. ” — Alex M., Podcast Host “ Compressed a 400MB iPhone video to 60MB in under a minute. Uploaded to YouTube immediately. No quality difference I could see. ” — Sophie T., YouTube Creator “ Cleaned up a 45-minute Zoom recording before sending to a client. They asked what mic I was using. ” — Marcus R., Freelance Consultant “ I record in my living room. Before Sondra, every episode had fan noise. Now it sounds like I have a studio. ” — Alex M., Podcast Host “ Compressed a 400MB iPhone video to 60MB in under a minute. Uploaded to YouTube immediately. No quality difference I could see. ” — Sophie T., YouTube Creator “ Cleaned up a 45-minute Zoom recording before sending to a client. They asked what mic I was using. ” — Marcus R., Freelance Consultant Your files never leave your device. No Upload to Server Everything runs in your browser. No account needed to try. Hear the difference Press play to hear our noise remover at work. Every Sondra tool runs the same way: instantly in your browser, with nothing ever uploaded.

Background noise: fan, room echo Clean voice, no noise, ready to publish Choose what you need from the tools above, then drop in your audio or video file. Up to 500MB. 2. Process in your browser Sondra does the work right on your device. Nothing is uploaded to a server. Your file is ready in seconds. No account, no waiting. Bigger files. No browser limits. Sondra for Windows does everything here — right on your computer. Free, private, no account. Handle long videos and huge files the browser simply can’t. Real FFmpeg with hardware acceleration — not slow WebAssembly. Batch & offline Queue many files at once, and work with no connection. Free · no account · Windows 10 & 11 Built for Creators Whatever you make, the right tools keep your files clean, light, and in the format you need. Sondra is built for people who create, and everything runs free, right in your browser. Record anywhere, clean it up here. Remove room noise and compress your episode before uploading to Spotify, Apple Podcasts, or your host. No studio required. Content Creators Shooting on your phone means large files. Compress your videos before posting to YouTube, TikTok, or Instagram, without re-recording or losing quality. Musicians & producers Convert tracks between MP3, WAV, AAC and FLAC so they play in any app, player or DAW. Keep it lossless when it matters, or make it small when it does not. Convert clips between MP4, MOV and MKV, or pull a clean audio track out of any video for a voiceover or transcript. Frequently Asked Questions We use essential cookies to make Sondra work, and optional analytics cookies to understand how you use it. Your files are never tracked.