Overview
This document provides an overview of APIs and SDK code samples for blind watermarking.
Adding Blind Watermark
Feature description
You can add a blind watermark when uploading or downloading an object.
Sample 1: Adding a blind watermark during upload
const filePath = "temp-file-to-upload"
cos.putObject({
Bucket: 'examplebucket-1250000000',
Region: 'COS_REGION',
Key: 'exampleobject',
Body: fs.createReadStream(filePath),
Headers: {
'Pic-Operations': '{"is_pic_info": 1, "rules": [{"fileid": "desample_photo.jpg", "rule": "watermark/3/type/1/image/aHR0cDovL2V4YW1wbGVzLTEyNTEwMDAwMDQucGljc2gubXlxY2xvdWQuY29tL3NodWl5aW4uanBn"}]}'
},
}, function(err, data) {
console.log(err || data);
});
Sample 2: Adding a blind watermark during download
cos.getObject({
Bucket: 'examplebucket-1250000000',
Region: 'COS_REGION',
Key: 'exampleobject',
QueryString: 'watermark/3/type/1/image/aHR0cDovL2V4YW1wbGVzLTEyNTEwMDAwMDQucGljc2gubXlxY2xvdWQuY29tL3NodWl5aW4uanBn',
}, function (err, data) {
console.log(err || data);
fs.writeFileSync('filepath', data.Body);
});
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