Midi To Thirty Dollar Website Info

Below is a that lets users upload a MIDI file, converts it to a visual piano roll / notation preview, and allows downloading as a printable PDF (using free client-side tools).

canvas#pianoCanvas background: #0f1720; border-radius: 14px; width: 100%; height: auto; display: block; midi to thirty dollar website

.btn-primary background: #2c7da0; .btn-primary:hover background: #1f5e7a; transform: scale(0.97); Below is a that lets users upload a

// Render piano roll on canvas function renderPianoRoll(notes, ticksPerQuarter, canvasElem) if (!notes.length) const ctx = canvasElem.getContext('2d'); ctx.clearRect(0, 0, canvasElem.width, canvasElem.height); ctx.fillStyle = "#aaa"; ctx.font = "14px Inter"; ctx.fillText("No notes to display", 20, 50); return; const width = canvasElem.width; const height = canvasElem.height; const ctx = canvasElem.getContext('2d'); ctx.clearRect(0, 0, width, height); const maxTick = Math.max(...notes.map(n => n.startTick + n.duration), 480 * 4); const ticksPerMeasure = ticksPerQuarter * 4; const maxMeasures = Math.min(8, Math.ceil(maxTick / ticksPerMeasure)); const timeRange = ticksPerMeasure * maxMeasures; const minPitch = Math.min(...notes.map(n => n.pitch), 48); const maxPitch = Math.max(...notes.map(n => n.pitch), 84); const pitchRange = maxPitch - minPitch + 1; const noteHeight = Math.min(14, (height - 60) / pitchRange); // Draw grid & labels ctx.fillStyle = "#ddd"; ctx.font = "10px monospace"; for (let i = 0; i <= maxMeasures; i++) let x = (i * ticksPerMeasure / timeRange) * width; ctx.beginPath(); ctx.strokeStyle = "#3a546d"; ctx.lineWidth = 0.7; ctx.moveTo(x, 0); ctx.lineTo(x, height); ctx.stroke(); ctx.fillStyle = "#b9d0e4"; ctx.fillText(`$i`, x+4, 18); // draw note rectangles for (let note of notes) const x = (note.startTick / timeRange) * width; const w = (note.duration / timeRange) * width; const y = ((maxPitch - note.pitch) / pitchRange) * (height - 40) + 20; ctx.fillStyle = `hsl($200 + (note.velocity * 0.5), 70%, 60%)`; ctx.fillRect(x, y, Math.max(w, 3), noteHeight-1); ctx.strokeStyle = "#ffffff80"; ctx.strokeRect(x, y, Math.max(w, 3), noteHeight-1); // pitch labels ctx.fillStyle = "#ffecb3"; ctx.font = "9px monospace"; for (let p = minPitch; p <= maxPitch; p+=2) let y = ((maxPitch - p) / pitchRange) * (height - 40) + 20 + noteHeight/2; ctx.fillText(MidiFile.pitchName ? MidiFile.pitchName(p) : `note$p`, 5, y); .btn-primary background: #2c7da0

// File loader function loadMidiFile(file) if (!file

// DOM elements const fileInput = document.getElementById('fileInput'); const dropZone = document.getElementById('dropZone'); const selectBtn = document.getElementById('selectFileBtn'); const controlsSection = document.getElementById('controlsSection'); const notationCanvas = document.getElementById('notationCanvas'); const pianoCanvas = document.getElementById('pianoCanvas'); const midiStatus = document.getElementById('midiStatus'); const trackInfoSpan = document.getElementById('trackInfo'); const downloadBtn = document.getElementById('downloadPdfBtn'); const resetBtn = document.getElementById('resetBtn');

.piano-roll h3 color: #eef4ff; margin-top: 0; margin-bottom: 12px; font-size: 1.2rem;