Free Online Utility Tools for Everyday Tasks

3 Audio Visualizer Load a local audio file and visualize its real waveform or frequency data with Web Audio and Canvas.

2 Random BGM Generator Generate short procedural background music with randomized style, BPM, key, intensity and seed, then preview or export WAV.

1 Audio Fade Tool Apply real fade-in and fade-out gain envelopes to a local audio file and export the processed WAV.

0 Text to Speech Generator Speak text with the browser Web Speech API using available voices, languages and adjustable rate, pitch and volume.

0 Random Ringtone Generator Generate short procedural ringtone melodies with selectable motif style, tempo, octave, brightness and seed, with WAV export.

0 SFX Generator Generate procedural UI, impact, sweep, laser, alert and other sound effects with real Web Audio-style synthesis and WAV export.

0 Tone & Frequency Generator Generate a real browser tone with selectable waveform, frequency, volume and duration plus musical-note information.

0 Binaural / Frequency Tone Generator Generate true stereo two-frequency tones with separate left/right channels and an explicit carrier/beat relationship.

0 Audio Waveform Generator Generate real PCM audio waveforms and visualize the generated samples with WAV export.

0 Audio Volume / Gain Tool Apply mathematically correct dB gain and optional normalization to a decoded local audio file, then export a real WAV.

0 Audio Trim & Cut Tool Trim a browser-decodable local audio file by precise start/end times and export only the selected samples as WAV.

0 Audio Speed & Pitch Tool Change audio speed and apply pitch-via-resampling transparently, with real local processing and WAV export.