wehub-resource-sync
26 lines
640 B
TypeScript
26 lines
640 B
TypeScript
/**
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* 压缩图片
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* @param image 要压缩的图片
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* @param mimeType mime类型
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* @param quality 质量
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*/
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export default function compressImage(
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image: HTMLImageElement,
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mimeType: string,
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quality = 1,
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): Promise<Blob | null> {
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return new Promise((resolve) => {
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const canvas = document.createElement('canvas');
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canvas.width = image.width;
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canvas.height = image.height;
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const ctx = canvas.getContext('2d');
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if (ctx) {
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ctx.drawImage(image, 0, 0);
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canvas.toBlob(resolve, mimeType, quality);
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} else {
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resolve(null);
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}
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});
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}
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