Comments (2)
Since watermark.js accepts multiple types of resources, you could just keep a single Image
instance around for the watermark, and use File
objects (from a user upload) for the images to watermark.
var mark = new Image();
mark.onload = function () {
//loop through file inputs
var input = document.querySelector('input[type=file]');
for (var i = 0; i < input.files.length; i++) {
// use the same loaded image in each iteration
watermark([input.files[i], this])
.blob(watermark.image.lowerRight(0.5))
.then(handleUpload);
}
}
mark.src = '/path/to/watermark.png';
function handleUpload(blob) {
// whatever your upload implementation is
}
This is just what comes to mind - there may be other ways to do it, but the idea is you can cache the watermark image and use the same instance in multiple watermark operations.
Does this help?
from watermarkjs.
Thanks for the prompt response. You helped me get the wheels turning.
My needs were very basic. I'm not a JavaScript wizard by any means so after poking around all day at the upload.js code and I was able to get it to do what I needed by stripping out code and changing the setTarget function to load the watermark url
function setTarget(file) {
watermark([file, 'images/logo.jpg'])
.image(watermark.image.lowerRight())
.then(function (img) {
document.getElementById('preview').appendChild(img);
})
}
from watermarkjs.
Related Issues (20)
- Watermarking on list of images eats up CPU HOT 3
- Return watermarked image as JPEG HOT 4
- CanvasPool can grow unbounded
- EXIF implementation brainstorming
- Watermartkjs does not work in IOS mobiles HOT 2
- Image is not defined HOT 2
- Text Align center of box
- How to make watermark cover 100% width? HOT 1
- lightGallery + watermakjs
- Apply watermark as a tile: multiple consequtive watermarks HOT 1
- 功能问题 HOT 2
- function to return only the url of the image
- Unable to build HOT 3
- examples are not working at all for me
- How to watermark on sever? HOT 1
- Watermark 20 images on page load is lock the page. HOT 2
- [HELP] Canvas area exceeds the maximum limit in ios safari
- window is not defined
- Multiple line text watermark.
- Re-init watermark with selected dropdown values
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from watermarkjs.