Video & Audio
20 free tools · runs in your browser
Convert MP4 to MP3/WAV, trim, compress, record your screen or voice, text-to-speech and more — powered by your browser. Like every tool on UsefulTools, these are free, require no signup, and process everything locally on your device.
MP4 to MP3 Converter
Extract audio tracks from video files
MP4 to WAV Converter
Lossless audio extraction from video
MP4 to WebM Converter
Re-encode videos to the open WebM format
Video to GIF Converter
Turn any video clip into a looping GIF
Video Trimmer
Cut video clips by start and end time
Video Compressor
Shrink video file sizes in your browser
Video Metadata Viewer
Inspect codecs, duration, resolution, bitrate
Video Joiner
Concatenate clips into one video
Audio Converter
MP3, WAV, OGG, M4A, FLAC to any format
MP3 Cutter
Trim audio clips with second precision
Audio Reverser
Play any audio backwards
Audio Speed Changer
Speed up or slow down audio, pitch-safe
Audio Joiner
Merge tracks into one continuous file
Screen Recorder
Record your screen or a browser tab
Voice Recorder
Record audio from your microphone
Webcam Recorder
Record video from your camera
Text to Speech
Speak any text with system voices
Speech to Text
Live dictation straight into text
Tone Generator
Play sine, square & saw tones at any Hz
Online Metronome
Keep perfect tempo, 30–300 BPM