Convert audio in your browser

Cut an MP3 with a waveform and two handles. One start–end range, MP3 in and MP3 out. No upload — free private cutter in your browser.

Trim Zoom clips and voice notes with a waveform. WAV, M4A, or MP3 in — pick output format. Private in-browser trim, no upload, free to download.

Slow audio to 0.5×–1× in your browser. Drop pitch by default (tape), or keep pitch for natural speech. WAV export — no upload, free, Chrome and Safari.

Record narration over an audio track or add a voiceover file, with auto-ducking that lowers the music under your voice. Nothing is uploaded. Free, in your browser.

Auto-detect and remove silence with threshold, min length, and padding. Waveform preview. Files never leave your device — free podcast cleanup.

Edit audio online without uploading. Multi-track timeline, split, fade, remove silence, slow down, and export a mix. Free, private, Chrome and Safari.

Convert WAV to MP3 online without uploading. Files stay on your device at 192 kbps by default. Free, works in Chrome and Safari — no account required.

Convert M4A or AAC Voice Memos to MP3 in Safari without uploading. Built for iPhone. Free, private, no app install — pick bitrate then download.

Convert MP3 to uncompressed WAV online without uploading. Keeps the original sample rate and channels. Free in-browser tool — no account needed.

Convert WAV, MP3, or M4A to a base64 data URI in your browser. No upload. Copy or download a .txt — free, private, works in Chrome and Safari.

Convert FLAC to MP3 in your browser without uploading. Pick bitrate, download a shareable MP3. Free, private, Chrome and Safari.

Convert Dolby Digital AC-3 or E-AC-3 audio to MP3 in your browser. Works with MKV, MPEG-TS, and MP4 containers. No upload.

Convert DTS audio to MP3 in your browser. Drop MKV or MPEG-TS with a DTS track — no upload, free, private.

Convert WAV to lossless FLAC in your browser without uploading. Smaller than WAV, no quality loss. Free, private, Chrome and Safari.

Convert WAV to M4A/AAC in your browser without uploading. Great for Apple devices. Free, private, works in Chrome and Safari.

Re-encode an MP3 at a lower bitrate in your browser. Default 128 kbps, optional mono. No upload — free private compression, download when ready.