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
<input id="fileSelector" type="file" />
<input id="submitBtn" type="submit" />
function handleFileInUploading(file) {
cos.putObject(
{
Bucket: 'examplebucket-1250000000',
Region: 'COS_REGION',
Key: file.name,
Body: file,
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);
},
);
}
document.getElementById('submitBtn').onclick = function (e) {
var file = document.getElementById('fileSelector').files[0];
if (!file) {
document.getElementById('msg').innerText = 'No file selected for upload';
return;
}
handleFileInUploading();
};
Sample 2: Adding a blind watermark during download
<input id="submitBtn" type="submit" />
function getObject() {
cos.getObject(
{
Bucket: 'examplebucket-1250000000',
Region: 'COS_REGION',
Key: 'exampleobject',
QueryString: `watermark/3/type/1/image/aHR0cDovL2V4YW1wbGVzLTEyNTEwMDAwMDQucGljc2gubXlxY2xvdWQuY29tL3NodWl5aW4uanBn`,
},
function (err, data) {
console.log(err || data);
},
);
}
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