{"id":"image-converter","engine":"media","category":"image","name":"图片格式转换","fields":[{"key":"file","label":"选择文件","type":"file","accept":"image/png,image/jpeg,image/webp,image/gif,image/bmp","multiple":false,"required":true},{"key":"format","label":"输出格式","type":"select","default":"image/webp","options":[{"value":"image/webp","label":"WebP"},{"value":"image/png","label":"PNG"},{"value":"image/jpeg","label":"JPEG"}]},{"key":"quality","label":"质量","type":"number","default":85,"min":1,"max":100,"step":1},{"key":"background","label":"背景色","type":"color","default":"#ffffff"}],"sample":{}}