MR. BLINDBANDIT / CREATOR TOOLS
Loudness & Audio Check
Measure audio levels and inspect clipping indicators.
Ready to choose a file. Engine loads on demand.
Technical details
Browser-local FFmpeg WebAssembly worker, Canvas and Web Audio. Single-worker fallback does not require SharedArrayBuffer. Files are not retained after reload.
How to use this tool
- Choose your source file using the labeled file button.
- Review metadata, preview and the relevant destination settings.
- Start processing and keep this page open.
- Download or share your finished file from the completion dialog.
Supported files and device limits
Common audio inputs include MP3, WAV, FLAC, M4A/AAC, OGG and Opus when the bundled engine can decode the codec. Images: JPEG, PNG and WebP. Convert HEIC to JPEG first. Large sources, long podcasts and 4K exports can exceed browser memory. Try a shorter clip or lower resolution if an export fails.
Privacy and troubleshooting
Source media stays in this browser session. The engine downloads from jsDelivr on first use; the provider receives ordinary connection information but no source media from these tools. Only non-sensitive destination preferences are saved locally. Retry after an engine error, close memory-heavy tabs or try a different browser. No higher-resolution setting can restore detail absent from your source.
Accessibility
Controls have text labels, timelines use numeric time fields, and downloads open in a keyboard-accessible dialog. Accessibility information and issue reporting.
Understanding your loudness readings
This tool measures how loud your audio is and whether it clips. Integrated loudness, in LUFS, is the average perceived loudness of the whole file. True peak, in dBTP, is the highest level after conversion, and values above 0 dBTP can distort on playback.
Step by step
- Choose your audio file with the labelled file button.
- Select Analyze audio and wait for the completion announcement.
- Read the loudness, peak and clipping results.
- If needed, adjust your mix or use the loudness normalizer.
Tips
- Many streaming services adjust playback volume towards a reference loudness, so a very loud master may simply be turned down. Check each service’s current guidance.
- Leave around 1 dB of true-peak headroom to reduce distortion after encoding.
- Compare against a reference track you like, measured the same way.
Screen-reader tips: every control has a text label, and progress and completion messages are announced in a live region, so you can keep your focus where it is. Use the heading keys to jump between the file, settings and results sections. Your file is processed in this browser and is not uploaded to the server; it is gone when you reload the page. See all media tools and the media suite terms.