# Metronomo Online

> Free browser-based metronome for musicians. Precision Web Audio API timing, tap tempo, speed trainer, rest trainer, stage mode, and 281 BPM pages (20–300). No download, no account required. Built with Astro and Tailwind CSS. Primary language: Brazilian Portuguese (pt-BR), also available in Spanish (es).

A precision metronome that runs entirely in the browser using the Web Audio API for sample-accurate timing. No ads, no sign-up, works offline as a Progressive Web App. Designed for practice on any instrument — guitar, piano, drums, violin, bass, or any other.

## Features

- [Metronome App](https://metronomo-online.com/): Interactive metronome with BPM slider, time signature selection, and visual beat indicators
- [Tap Tempo](https://metronomo-online.com/): Press T or tap the button to detect BPM from any song in real time
- [Speed Trainer](https://metronomo-online.com/): Press M to gradually increase BPM every N bars for progressive speed building
- [Rest Trainer](https://metronomo-online.com/): Press G to mute the click for several bars, then bring it back — trains your internal clock
- [Stage Mode](https://metronomo-online.com/): Press F for fullscreen high-contrast display with giant BPM readout for live use
- [Keyboard Shortcuts](https://metronomo-online.com/): Space (play/stop), T (tap), arrows (BPM ±1), Shift+arrows (BPM ±5), 1–6 (time signatures), M, G, F, R

## Tempo Reference

- [Tempo Markings Guide](https://metronomo-online.com/tempo/): Complete guide to Italian tempo markings from Larghissimo (20 BPM) to Prestissimo (200 BPM)
- [Larghissimo](https://metronomo-online.com/tempo/larghissimo/): 20–24 BPM — Extremely slow and solemn
- [Grave](https://metronomo-online.com/tempo/grave/): 25–40 BPM — Slow and heavy with depth
- [Largo](https://metronomo-online.com/tempo/largo/): 41–54 BPM — Broad and spacious
- [Larghetto](https://metronomo-online.com/tempo/larghetto/): 55–64 BPM — Fairly broad, flowing gently
- [Adagio](https://metronomo-online.com/tempo/adagio/): 65–72 BPM — Slow and relaxed
- [Adagietto](https://metronomo-online.com/tempo/adagietto/): 73–76 BPM — Slightly faster than Adagio
- [Andante](https://metronomo-online.com/tempo/andante/): 77–84 BPM — Walking pace
- [Andantino](https://metronomo-online.com/tempo/andantino/): 85–92 BPM — Slightly faster than Andante
- [Moderato](https://metronomo-online.com/tempo/moderato/): 93–100 BPM — Moderate and balanced
- [Allegretto](https://metronomo-online.com/tempo/allegretto/): 101–108 BPM — Moderately fast and cheerful
- [Allegro](https://metronomo-online.com/tempo/allegro/): 109–120 BPM — Fast, bright, and energetic
- [Vivace](https://metronomo-online.com/tempo/vivace/): 121–132 BPM — Lively and animated
- [Molto Vivace](https://metronomo-online.com/tempo/molto-vivace/): 133–156 BPM — Very fast and passionate
- [Presto](https://metronomo-online.com/tempo/presto/): 157–168 BPM — Very fast and brilliant
- [Prestissimo](https://metronomo-online.com/tempo/prestissimo/): 169–200 BPM — As fast as possible
- [Ultra Presto](https://metronomo-online.com/tempo/ultra-presto/): 201–300 BPM — Beyond conventional range

## BPM Pages

- [All BPMs (20–300)](https://metronomo-online.com/bpm/): Index of every BPM with shareable metronome links
- Each BPM from [20](https://metronomo-online.com/bpm/20/) to [300](https://metronomo-online.com/bpm/300/) has its own dedicated page with the metronome pre-set to that tempo, Italian tempo marking, and practice tips

## About

- [About Metronomo Online](https://metronomo-online.com/about/): Mission, features, and why we built it
- [Privacy Policy](https://metronomo-online.com/privacy/): What we collect (almost nothing), local storage, and your rights
- [Terms and Conditions](https://metronomo-online.com/terms/): Usage rules, licensing, and disclaimers
- [Contact](https://metronomo-online.com/contact/): Send feedback, bug reports, or feature requests

## Spanish (Español)

- [Inicio](https://metronomo-online.com/es/): Metrónomo interactivo en español
- [Sobre Nosotros](https://metronomo-online.com/es/about/): Misión, características y por qué lo creamos
- [Política de Privacidad](https://metronomo-online.com/es/privacy/): Qué recopilamos, almacenamiento local y tus derechos
- [Términos y Condiciones](https://metronomo-online.com/es/terms/): Reglas de uso, licencia y exenciones
- [Contacto](https://metronomo-online.com/es/contact/): Envía comentarios, reporta errores o solicita funciones
- [Guía de Tempos](https://metronomo-online.com/es/tempo/): Guía completa de marcas de tempo italianas
- [Buscar BPM](https://metronomo-online.com/es/bpm/): Índice de todos los BPM con enlaces de metrónomo

## Technical

- Built with [Astro](https://astro.build/) and [Tailwind CSS](https://tailwindcss.com/)
- Audio engine: Web Audio API for sample-accurate timing
- Works offline as a Progressive Web App (PWA)
- Deployed on Cloudflare Pages
- No tracking cookies by default; localStorage only for user preferences

## Optional

- [Sitemap](https://metronomo-online.com/sitemap.xml): Full list of all indexable pages
- [llms-full.txt](https://metronomo-online.com/llms-full.txt): Comprehensive version with full page content