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Audio and Video

Convert, compress, and cut audio and video — MP3, WAV, MP4, WebM, Opus — all in your browser, nothing uploads.

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All Audio and Video

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Convert, compress, trim, and repackage audio and video entirely in your browser — MP3, WAV, FLAC, M4A, OGG, Opus on the audio side; MP4, WebM, MOV, MKV, AVI on the video side. Everything runs on your own device through WebCodecs and the mediabunny engine (plus a local lamejs MP3 encoder), so voice notes, lecture recordings, home videos, and work-in-progress clips never leave your machine. Drop a WhatsApp .opus voice note and get an MP3 that email clients accept; pull the audio track out of a screen recording; shrink an oversized clip under Discord or WhatsApp's size cap by back-solving the bitrate from your target megabytes; strip a video's audio for a silent loop; or turn a clip into an animated GIF. Batch mode converts a whole folder at once and downloads the results as a ZIP. The only hard limit is your device's memory, which handles most files under 500MB; because nothing uploads there is no queue, no rate limit, and no chance a private recording lands on someone else's server. Format coverage matches what your browser can decode and encode — the common modern set, not legacy proprietary codecs like WMA, WMV, or FLV.

Frequently Asked Questions

What audio and video formats are supported?

Audio: MP3, WAV, FLAC, M4A/AAC, OGG, and Opus in and out. Video: MP4, WebM, MOV, MKV, and AVI in; MP4 (H.264/H.265) and WebM (VP9/AV1) out. Coverage matches what your browser can decode and encode via WebCodecs — the common modern set, not legacy formats like WMA, WMV, or FLV.

Is there a file size limit?

No server limit — processing happens on your device. Files over 500MB may be slow depending on your device's memory and CPU. Encoding runs in a Web Worker via WebCodecs and the mediabunny engine, off the main thread so the page stays responsive.

Does compressing reduce visible quality?

Some — the video compressor targets a file size (e.g. Discord 8MB, WhatsApp 16MB) by back-solving the bitrate, or you pick a quality level. Audio compression picks a codec and bitrate. Defaults aim for near-original quality at a fraction of the size; lower the target to shrink further, trading size against quality.

Do my files upload anywhere?

No. Every audio and video tool runs entirely in your browser — files never touch a server, nothing is logged, and results download straight to your device. Privacy-sensitive recordings (voice memos, legal calls, home videos) stay local throughout.