iNatSpectro

The missing Spectrogram for iNaturalist - Displays a spectrogram for audio on iNaturalist observation pages using the Web Audio API.

Visualise Nature's Sounds on iNaturalist This extension adds a dynamic spectrogram visualisation beneath audio recordings on iNaturalist.org observation pages. Whether you're identifying frog calls, bat echolocation, bird songs, or other natural sounds, this tool lets you see what you're hearing. 🎧 Why use it? Many wildlife sounds are easier to interpret with visual context—especially in noisy environments or when calls are hard to distinguish by ear. This spectrogram helps researchers, identifiers, and curious naturalists analyse recordings at a glance. 🔬 How it works The extension uses the Web Audio API to render a real-time spectrogram whenever you play an audio file on an iNaturalist observation. It loads automatically and blends seamlessly with the existing page. 🔍 Features in v3.3.7: • Enhanced multi-browser architecture with optimized performance • Automatic taxon-based profile selection (bat, bird, frog, insect, cetacean) • Full spectrogram rendering, including ultrasonic frequencies up to 384 kHz • Configurable high-resolution rendering (200-800 pixels/second) • Toggle between logarithmic and linear frequency scales • Zoom and pan across the time axis for closer inspection (100%-2000% zoom) • 7 adjustable controls for brightness, frequency range, smoothing, and resolution • Targeted activation - only runs on individual observation pages for better performance • Professional-grade single-tier rendering eliminates complexity and ensures reliability • No tracking, fast and lightweight — built for the iNaturalist community 🧬 Perfect for: • Citizen scientists and biologists • Bat, frog, bird, insect, and whale call analysis • Educators and ecoacoustics enthusiasts • Research-grade bioacoustic analysis up to 384kHz • Anyone who wants to bring audio observations to life 🚀 What's New in v3.3.7: • Enhanced build system with improved performance optimization • Targeted page activation prevents unnecessary resource usage • Improved species detection with enhanced API integration • Streamlined architecture for faster loading and smoother operation • Better memory management for large audio files iNatSpectro integrates seamlessly into iNaturalist, respects your privacy, and helps you get more from every audio observation—visually. All audio processing happens locally in your browser using the Web Audio API, with no data collection or transmission.