HEIC to JPG/PNG converter using Rust and WebAssembly.
npm install @ciptacode/heic2jpgIf you are using Vite, you can use the web target build.
npm run buildimport React, { useState } from 'react';
import init, { convert_heic_to_jpg } from '@ciptacode/heic2jpg';
function App() {
const [resultImage, setResultImage] = useState<string | null>(null);
const handleFileChange = async (e: React.ChangeEvent<HTMLInputElement>) => {
const file = e.target.files?.[0];
if (!file) return;
// Initialize the wasm module
await init();
const reader = new FileReader();
reader.onload = async (event) => {
const arrayBuffer = event.target?.result as ArrayBuffer;
const uint8Array = new Uint8Array(arrayBuffer);
try {
// Convert HEIC to JPG (quality 80)
const jpgData = convert_heic_to_jpg(uint8Array, 80);
// Create a blob and URL for the result
// Note: Casting to 'any' or 'BlobPart' might be needed if your TS version
// complains about Uint8Array vs BlobPart compatibility.
const blob = new Blob([jpgData as any], { type: 'image/jpeg' });
const url = URL.createObjectURL(blob);
setResultImage(url);
} catch (err) {
console.error("Conversion failed", err);
}
};
reader.readAsArrayBuffer(file);
};
return (
<div>
<h1>HEIC to JPG Converter</h1>
<input type="file" accept=".heic" onChange={handleFileChange} />
{resultImage && (
<div>
<h2>Result:</h2>
<img src={resultImage} alt="Converted" style={{ maxWidth: '100%' }} />
<br />
<a href={resultImage} download="converted.jpg">Download JPG</a>
</div>
)}
</div>
);
}
export default App;You can also use it directly in the browser using ES Modules.
<!DOCTYPE html>
<html lang="en">
<body>
<input type="file" id="upload" accept=".heic">
<div id="result"></div>
<script type="module">
// Import from the built package
import init, { convert_heic_to_jpg } from './pkg/heic2jpg.js';
async function run() {
// Initialize the wasm module
await init();
document.getElementById('upload').addEventListener('change', async (e) => {
const file = e.target.files[0];
if (!file) return;
const arrayBuffer = await file.arrayBuffer();
const uint8Array = new Uint8Array(arrayBuffer);
try {
// Convert HEIC to JPG (quality 80)
const jpgData = convert_heic_to_jpg(uint8Array, 80);
const blob = new Blob([jpgData], { type: 'image/jpeg' });
const url = URL.createObjectURL(blob);
const resultDiv = document.getElementById('result');
resultDiv.innerHTML = `
<h2>Result:</h2>
<img src="${url}" style="max-width: 100%">
<br>
<a href="${url}" download="converted.jpg">Download JPG</a>
`;
} catch (err) {
console.error("Conversion failed", err);
}
});
}
run();
</script>
</body>
</html>Converts HEIC data to JPEG.
data: Uint8Array of the HEIC file.quality: JPEG quality (1-100).- Returns: Uint8Array of the JPEG file.
Converts HEIC data to PNG.
data: Uint8Array of the HEIC file.- Returns: Uint8Array of the PNG file.
npm run buildnpm run build:bundler