filter: brightness(200%);
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<style>
.img1 {
filter: brightness(200%);
}
</style>
<img src="//repo.bfw.wiki/bfwrepo/image/5d6539613d08b.png" class="img1">
<img src="//repo.bfw.wiki/bfwrepo/image/5d6539613d08b.png" class="img2">
</body>
</html>
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