SoundSwap
The audio converter that
never uploads you files
Convert MP3, WAV, FLAC, AAC, OGG and more — entirely in your browser.
No upload, no sign-up, unlimited and free.
How it works
Three steps to perfect audio
Drop your files
Drag and drop audio files or click to browse. We support all major formats.
Choose format
Select output format and fine-tune quality settings like bitrate and sample rate.
Download instantly
Your converted files are ready in seconds. Download individually or all at once.
Features
Everything you need,
nothing you don't
Lightning fast
WebAssembly-powered engine delivers native-speed conversion directly in your browser.
Complete privacy
Your files never leave your device. Zero uploads, zero server processing.
Pristine quality
Fine-tune bitrate, sample rate, and channels. From lossless to optimized web formats.
Batch processing
Convert entire collections at once. Drag dozens of files and transform them all.
Advanced controls
Adjust bitrate from 64 to 320 kbps, choose sample rates up to 96 kHz, and more.
Instant download
Your converted files are ready immediately. Download individually or all at once.
Formats
Every format, one tool
The universal standard. Compatible with every device and platform.
Popular conversions
FAQ
Frequently asked questions
Yes, absolutely. We use WebAssembly to run the conversion engine directly in your browser. Your audio files never leave your device, are never uploaded to any server, and we have zero access to your recordings.
We support MP3, WAV, FLAC, AAC, OGG and AIFF. You can convert between any combination of these formats. We're continually adding support for more formats based on user requests.
Since everything runs in your browser, the limit depends on your device's available memory. Most modern devices can comfortably handle files up to 500 MB. For very large files, we recommend closing other browser tabs to free up memory.
Converting between lossless formats (WAV, FLAC, AIFF) preserves perfect quality. When converting to lossy formats (MP3, AAC, OGG), you have full control over bitrate and quality settings.
The core converter is completely free with no limitations. Convert as many files as you want, as often as you want.
Yes! Our batch processing lets you drag in as many files as you need and convert them all at once with the same settings. This is perfect for converting entire albums or podcast seasons.