Video & Audio Tools

A list of our Video & Audio tools. Nothing you enter is sent to a server; it is all processed in your browser.

• Video & Audio Converter, Trimmer, Compressor

  Convert video and audio to MP4, WebM, MP3 and more, trim a section, or shrink the file by lowering quality and resolution. Runs in your browser, no upload.

• Video to GIF & Frame Extractor

  Turn part of a video into an animated GIF with your FPS and width, or save any frame as PNG. Runs in your browser, no upload

• Metronome & BPM Tap Tempo Counter

  An online metronome from 20 to 300 BPM with time signatures and subdivisions, plus a tap tempo counter to find the BPM of a song

• Instrument Tuner (Guitar, Bass, Ukulele)

  Tune with your microphone using live pitch detection. Presets for guitar, bass and ukulele plus chromatic mode, with a cents meter

• Audio Speed & Pitch Changer

  Change audio speed and pitch (key) in semitones, preview, and save as WAV. Runs in your browser.

• Text to Speech (Built-in Browser Voices)

  Read text aloud with voices built into your device. Choose voice, speed, pitch and volume. Cloud voices are never used.

• Noise Generator

  Play white, pink or brown noise for focus and sleep, with a timer and fade-out.

• Virtual Piano

  Play a piano with your computer keyboard, mouse or touch. Four sounds and octave shift.

• Audio Merger

  Join several audio files into one with reordering, crossfades, silent gaps and fade in/out. Preview and save as WAV in your browser.

• BPM to Delay Time Calculator

  Convert BPM to delay times in ms and Hz per note value, plus reverb pre-delay and decay guides.

• SRT ⇔ VTT Subtitle Converter

  Convert subtitles between SRT and WebVTT, shift timings, fix frame rate drift, and detect Shift_JIS or UTF-8 encoding.

• BPM Detector

  Detect the BPM (tempo) of an MP3 or WAV file automatically, with half and double tempo candidates. Runs in your browser.

• Note to Frequency Converter (Hz, MIDI, Cents)

  Convert note names, MIDI note numbers and frequencies in Hz. Change the A4 reference pitch and see cents offsets and a frequency table

• Video Speed Changer (Fast Forward & Slow Motion)

  Speed up or slow down a video from 0.25x to 4x and save as MP4 or WebM. Runs in your browser, no upload

• Video Merger

  Join multiple videos into one MP4 or WebM in your browser. Reorder clips; size and fps follow the first video. Silent clips are padded. No upload.

• Audio Silence Remover

  Detect silent parts in audio on a waveform, then cut or shorten them with a dB threshold, minimum length and padding. Save as WAV.