Free Browser-Based Audio & Video Tools

TrueRes.io is a collection of free, privacy-first audio and video tools that run entirely in your browser. No uploads, no servers, no accounts. Analyze, convert, and process media files locally on your device.

Tool categories

• Browse all tools — the complete directory.
• Hi-Res Verifier — verify true audio resolution and detect upsampled files.
• LUFS Meter — ITU-R BS.1770-4 loudness measurement.
• Spectrum Analyzer — real-time FFT frequency analysis.
• Spectrogram Viewer — time-frequency visualisation.
• Audio Converter — convert between WAV, FLAC, MP3, AAC, OGG.
• Video Converter — MP4, WebM, MOV, and more.
• Tone Generator — sine, square, triangle, sawtooth signals.
• About — how it works.
• Contact — get in touch.