Reduce MP3 file size by adjusting bitrate and audio quality settings. Perfect for saving storage or faster uploads. Everything runs locally in your browser — nothing is uploaded.
Convert an entire folder of audio files between MP3, WAV, OGG, FLAC, and M4A formats in one batch with consistent quality and bitrate settings. Everything runs locally in your browser — nothing is uploaded.
Convert WMA audio files to MP3 format directly in your browser. High-quality conversion with no file size limits. Private and free.
Convert OPUS audio files to MP3 format directly in your browser. High-quality conversion with no file size limits. Private and free.
Reduces JPG, PNG, and WebP file sizes using smart compression with a side-by-side quality preview slider. Balance file size and visual quality visually — max 20MB per image. Perfect for web optimization, email attachments, and social media uploads.
Reduces image file size to a specific target — 50 KB, 100 KB, or 200 KB — by automatically adjusting JPEG quality, reducing pixel dimensions, or stripping EXIF metadata. Ideal for government forms, job applications, and upload portals with strict file size limits.
MP3 Compressor lets you reduce MP3 file size by adjusting bitrate and audio quality settings. Perfect for saving storage or faster uploads. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Reduce MP3 file size by adjusting bitrate and audio quality settings. Perfect for saving storage or faster uploads. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Upload a file from your device. Drag and drop or use the file picker to select your document.
Yes. After the initial page load, MP3 Compressor runs entirely on your device with no internet connection needed. All processing is done locally.
Reduce MP3 file size by adjusting bitrate and audio quality settings. Perfect for saving storage or faster uploads. All audio processing runs locally in your browser.
Supported formats typically include MP3, WAV, OGG, M4A, FLAC, and audio tracks extracted from video files.
Quality depends on the bitrate and format you choose. Higher bitrates preserve more detail at the cost of larger file sizes.
Yes. All audio processing happens locally in your browser using WebAssembly. No data is transmitted.
Most audio operations complete in seconds. Longer files or complex operations may take a bit longer.
Audio Compressor
Balance audio dynamics with professional compression controls. Perfect for podcasts, voice overs, and music production. Features threshold, ratio, attack, release, and makeup gain.
Audio Format Converter
Convert between MP3, WAV, FLAC, OGG, M4A, and AAC audio formats. Pick any input and output format — your files never leave your device.