Extracts the audio track from uploaded video files (MP4, MOV, AVI, WebM) and encodes it as a high-quality MP3 file. Free to start with no signup.
Runs on FFmpeg
Content reviewed October 2026 · About Toolzum
Crop the visual area of your MP4 or WebM video directly in the browser with 9:16, 1:1, 16:9 presets or custom dimensions with X/Y offsets. Free to start with no signup.
Reduces MP4, MOV, and WebM video file sizes with a configurable CRF 20–40 slider (default 28, libx264 fast preset), plus a GIF mode with color-palette control. Videos never leave your device — compression runs locally in your browser with FFmpeg WASM.
Record your screen, application window, or browser tab with optional microphone audio. Choose HD, Full HD, or 2K quality. Download as WebM or MP4. No software installation needed.
Extracts the audio track from MP4 video files and saves it as a standalone MP3 file. All processing runs locally in your browser with FFmpeg WASM — nothing is uploaded.
Convert between MKV, MP4, MOV, WebM, and AVI video formats. Pick any input and output format from the dropdown — your files never leave your device.
MP4, MOV, AVI, WebM, MKV, and other common video formats. The tool extracts the audio track and encodes it as MP3.
Yes. Choose 128, 192, or 320 kbps with optional title/artist tags. Free extractions are limited to 3 per day (Pro unlimited); files up to 250 MB each.
Quality depends on the bitrate you choose. 320kbps produces near-original quality. Lower bitrates reduce file size but may introduce audible artifacts.
Files up to 250 MB each — larger uploads are refused before processing starts. Files near the cap still need plenty of free RAM and may process slowly on older devices.
Yes. After the initial page load, the converter uses FFmpeg WASM running locally. No internet connection needed during conversion.
Video Format Converter
Convert between MKV, MP4, MOV, WebM, and AVI video formats. Pick any input and output format from the dropdown — your files never leave your device.
Mute Video
Strip, replace, or adjust volume (0–200%) of any video’s audio in your browser — clean B-roll, GIF sources, confidential calls. Mute copies video untouched with zero re-encode waste — local FFmpeg, unlimited saves.