Video & Audio

Heavy lifting runs on FFmpeg compiled to WebAssembly. MP4 to MP3 and MP4 to WAV extract audio at up to 320 kbps, MP4 to WebM re-encodes video, and the trimmer, compressor, joiner, and MP3 cutter reshape files without uploading gigabytes first. The metadata viewer reports codecs, duration, resolution, and bitrate before you commit to a conversion, so you know what you are working with before any processing begins. You can inspect a file's properties and decide on the output format without waiting for an upload to finish.

Capture is covered too. The Screen Recorder, Voice Recorder, and Webcam Recorder save directly to disk, while Text to Speech speaks any passage aloud, Speech to Text dictates into the page, and the Tone Generator and Metronome serve musicians with exact frequencies and 30-300 BPM timing. You can record, convert, and inspect media without leaving the tab, and every capture starts the moment you press record. There is no queue and no processing limit imposed by a remote server.

Key tools include MP4 to MP3 for audio extraction, the trimmer and compressor for reshaping files, the joiner for combining clips, the Screen Recorder for capture, Text to Speech for read-aloud, and the metadata viewer for inspecting codecs and bitrate. Each one covers a distinct media job instead of bundling everything into one editor, so you open only what the task needs. A musician and a video editor open different tools for the same session.

Large media files never need to be uploaded to a server. Processing happens in your browser via WebAssembly, so a long video or a high-resolution recording stays on your device from start to finish. There are no file-size limits imposed by an upload form and no waiting for a round-trip before you see a result, and nothing you process is retained after you close the tab. A two-hour recording is as local as a thirty-second clip.

Common uses include pulling audio from a video, trimming a recording before sharing it, converting formats for compatibility, recording your screen or voice, and generating speech or tones. Large files stay on your device from start to finish, so a long video never has to ride an upload to a server. To get started, open the tool that matches your media format, select your file or start recording, and export the result to disk when it is ready. The related guides link back to two or three tools from this category for worked examples.