Free Audio & video tools
Nothing goes out of your device.
22 tools
- Waveform previewInspect a responsive peak waveform and precise duration.
- Trim audioKeep an exact start and end range, then export deterministic WAV.
- Split audioSplit at one or more timestamps and download every segment.
- Join audioJoin multiple decoded audio files in the chosen order.
- Fade in & outApply smooth linear fades without changing the source file.
- Normalize & volumeNormalize peaks and apply a safe gain adjustment.
- Mono & stereoDownmix to mono or create a stereo WAV locally.
- Change audio speedResample audio from 0.5× to 2× with deterministic output.
- Microphone recorderRecord with MediaRecorder, preview it, and export WAV.
- Audio inspectorRead file, codec, channel, sample-rate, and duration details.
- Video inspectorInspect container, dimensions, duration, and browser playback support.
- Video frame extractorSeek to a timestamp and export the exact visible frame.
- Video contact sheetSample evenly spaced frames into one labeled overview image.
- Mute videoRe-record the selected segment without its audio track when supported.
- Extract video audioCapture only the audio track into a browser-supported local file.
- Trim videoRe-record a start and end range with browser-native codecs.
- Subtitle editorEdit cue times and text in a structured local timeline.
- SRT to VTTConvert SRT cues into standards-friendly WebVTT.
- VTT to SRTConvert WebVTT cues into numbered SRT.
- Shift subtitle timingMove every cue forward or backward by milliseconds.
- Merge subtitlesCombine two timelines, offset the second, and sort all cues.
- Validate subtitlesReport malformed times, overlaps, gaps, and empty cues.