Audio Trimmer

MP3/AAC/FLAC/WAV/OGG/M4A conversion via FFmpeg command generator with tutorial

Text-to-speech with adjustable speed and pitch for reading aloud

Adjust audio volume and export, supports extracting audio from video

Record microphone audio locally, requires mic permission

Merge multiple audio files in sequence with configurable gap, export WAV

Validate, pretty-print or minify JSON with error line:col reporting

Merge multiple PDF files in sequence, all processed locally in browser

Generate cryptographically secure passwords with custom length and charset