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Watermark.js

Adds functionality to the JS Image Object allowing it to compress, resize, crop and watermark images.

Useful for uploading images straight to S3 without the need to resize prior.

####Basic usage

varimage=newImage();image.onload=function(){console.log(this.process());}image.src="path/to/image/on/same/domain.png";

Output Array, all ready to be sent to S3:

0: Blob
size: 864521
type: "image/jpeg"1: Blob
size: 68766
type: "image/jpeg"2: Blob
size: 14915
type: "image/jpeg"3: Blob
size: 2923
type: "image/jpeg"
length: 4

####With uploaded images

<inputtype="file" id="input" multiple/>
document.getElementById("input").addEventListener("change",function(){for(vari=0;i<this.files.length;i++){varfile=this.files[i],imageType=/image.*/;// Check file is an imageif(!file.type.match(imageType))continue;varimage=newImage();image.file=file;varreader=newFileReader();reader.onload=(function(img){// Closure to ensure safe passing of correct Imagereturnfunction(e){img.src=e.target.result;console.log(img.process());};})(image);reader.readAsDataURL(file);}},false);

####Options All options can be modified by changing the defaults at Image().defaults prior to processing.

Note: If you wish to change or add a watermark, you should replace the string value with an Image Object

// Global defaultsvardefaults=wm.defaults={className: "watermark",type: "image/jpeg",position: "top-right",padding: 25,opacity: 0.8,watermark: {standard: "img/watermark.png?"+(+(newDate())),highres: "img/watermark-high-res.png?"+(+(newDate()))},sizes: {// width, height, crop, watermark, quality (if defaults.type supports it)large: [1280,768,true,"highres",1],standard: [700,420,true,"standard",0.8],low: [320,200,true,"none",0.8],thumbnail: [128,80,true,"none",0.8]}};

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Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
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(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - eulo/javascript-watermark-resize: Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking · GitHub
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Watermark.js
Adds functionality to the JS Image Object allowing it to compress, resize, crop and watermark images.
Useful for uploading images straight to S3 without the need to resize prior.
####Basic usage
varimage=newImage();image.onload=function(){console.log(this.process());}image.src="path/to/image/on/same/domain.png";
Output Array, all ready to be sent to S3:
0: Blob
size: 864521
type: "image/jpeg"1: Blob
size: 68766
type: "image/jpeg"2: Blob
size: 14915
type: "image/jpeg"3: Blob
size: 2923
type: "image/jpeg"
length: 4
####With uploaded images
<inputtype="file" id="input" multiple/>
document.getElementById("input").addEventListener("change",function(){for(vari=0;i<this.files.length;i++){varfile=this.files[i],imageType=/image.*/;// Check file is an imageif(!file.type.match(imageType))continue;varimage=newImage();image.file=file;varreader=newFileReader();reader.onload=(function(img){// Closure to ensure safe passing of correct Imagereturnfunction(e){img.src=e.target.result;console.log(img.process());};})(image);reader.readAsDataURL(file);}},false);
####Options
All options can be modified by changing the defaults at Image().defaults prior to processing.
Note: If you wish to change or add a watermark, you should replace the string value with an Image Object
// Global defaultsvardefaults=wm.defaults={className: "watermark",type: "image/jpeg",position: "top-right",padding: 25,opacity: 0.8,watermark: {standard: "img/watermark.png?"+(+(newDate())),highres: "img/watermark-high-res.png?"+(+(newDate()))},sizes: {// width, height, crop, watermark, quality (if defaults.type supports it)large: [1280,768,true,"highres",1],standard: [700,420,true,"standard",0.8],low: [320,200,true,"none",0.8],thumbnail: [128,80,true,"none",0.8]}};
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
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.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - eulo/javascript-watermark-resize: Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking · GitHub
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Watermark.js
Adds functionality to the JS Image Object allowing it to compress, resize, crop and watermark images.
Useful for uploading images straight to S3 without the need to resize prior.
####Basic usage
varimage=newImage();image.onload=function(){console.log(this.process());}image.src="path/to/image/on/same/domain.png";
Output Array, all ready to be sent to S3:
0: Blob
size: 864521
type: "image/jpeg"1: Blob
size: 68766
type: "image/jpeg"2: Blob
size: 14915
type: "image/jpeg"3: Blob
size: 2923
type: "image/jpeg"
length: 4
####With uploaded images
<inputtype="file" id="input" multiple/>
document.getElementById("input").addEventListener("change",function(){for(vari=0;i<this.files.length;i++){varfile=this.files[i],imageType=/image.*/;// Check file is an imageif(!file.type.match(imageType))continue;varimage=newImage();image.file=file;varreader=newFileReader();reader.onload=(function(img){// Closure to ensure safe passing of correct Imagereturnfunction(e){img.src=e.target.result;console.log(img.process());};})(image);reader.readAsDataURL(file);}},false);
####Options
All options can be modified by changing the defaults at Image().defaults prior to processing.
Note: If you wish to change or add a watermark, you should replace the string value with an Image Object
// Global defaultsvardefaults=wm.defaults={className: "watermark",type: "image/jpeg",position: "top-right",padding: 25,opacity: 0.8,watermark: {standard: "img/watermark.png?"+(+(newDate())),highres: "img/watermark-high-res.png?"+(+(newDate()))},sizes: {// width, height, crop, watermark, quality (if defaults.type supports it)large: [1280,768,true,"highres",1],standard: [700,420,true,"standard",0.8],low: [320,200,true,"none",0.8],thumbnail: [128,80,true,"none",0.8]}};
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - eulo/javascript-watermark-resize: Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking · GitHub
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Watermark.js
Adds functionality to the JS Image Object allowing it to compress, resize, crop and watermark images.
Useful for uploading images straight to S3 without the need to resize prior.
####Basic usage
varimage=newImage();image.onload=function(){console.log(this.process());}image.src="path/to/image/on/same/domain.png";
Output Array, all ready to be sent to S3:
0: Blob
size: 864521
type: "image/jpeg"1: Blob
size: 68766
type: "image/jpeg"2: Blob
size: 14915
type: "image/jpeg"3: Blob
size: 2923
type: "image/jpeg"
length: 4
####With uploaded images
<inputtype="file" id="input" multiple/>
document.getElementById("input").addEventListener("change",function(){for(vari=0;i<this.files.length;i++){varfile=this.files[i],imageType=/image.*/;// Check file is an imageif(!file.type.match(imageType))continue;varimage=newImage();image.file=file;varreader=newFileReader();reader.onload=(function(img){// Closure to ensure safe passing of correct Imagereturnfunction(e){img.src=e.target.result;console.log(img.process());};})(image);reader.readAsDataURL(file);}},false);
####Options
All options can be modified by changing the defaults at Image().defaults prior to processing.
Note: If you wish to change or add a watermark, you should replace the string value with an Image Object
// Global defaultsvardefaults=wm.defaults={className: "watermark",type: "image/jpeg",position: "top-right",padding: 25,opacity: 0.8,watermark: {standard: "img/watermark.png?"+(+(newDate())),highres: "img/watermark-high-res.png?"+(+(newDate()))},sizes: {// width, height, crop, watermark, quality (if defaults.type supports it)large: [1280,768,true,"highres",1],standard: [700,420,true,"standard",0.8],low: [320,200,true,"none",0.8],thumbnail: [128,80,true,"none",0.8]}};
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - eulo/javascript-watermark-resize: Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking · GitHub
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Watermark.js
Adds functionality to the JS Image Object allowing it to compress, resize, crop and watermark images.
Useful for uploading images straight to S3 without the need to resize prior.
####Basic usage
varimage=newImage();image.onload=function(){console.log(this.process());}image.src="path/to/image/on/same/domain.png";
Output Array, all ready to be sent to S3:
0: Blob
size: 864521
type: "image/jpeg"1: Blob
size: 68766
type: "image/jpeg"2: Blob
size: 14915
type: "image/jpeg"3: Blob
size: 2923
type: "image/jpeg"
length: 4
####With uploaded images
<inputtype="file" id="input" multiple/>
document.getElementById("input").addEventListener("change",function(){for(vari=0;i<this.files.length;i++){varfile=this.files[i],imageType=/image.*/;// Check file is an imageif(!file.type.match(imageType))continue;varimage=newImage();image.file=file;varreader=newFileReader();reader.onload=(function(img){// Closure to ensure safe passing of correct Imagereturnfunction(e){img.src=e.target.result;console.log(img.process());};})(image);reader.readAsDataURL(file);}},false);
####Options
All options can be modified by changing the defaults at Image().defaults prior to processing.
Note: If you wish to change or add a watermark, you should replace the string value with an Image Object
// Global defaultsvardefaults=wm.defaults={className: "watermark",type: "image/jpeg",position: "top-right",padding: 25,opacity: 0.8,watermark: {standard: "img/watermark.png?"+(+(newDate())),highres: "img/watermark-high-res.png?"+(+(newDate()))},sizes: {// width, height, crop, watermark, quality (if defaults.type supports it)large: [1280,768,true,"highres",1],standard: [700,420,true,"standard",0.8],low: [320,200,true,"none",0.8],thumbnail: [128,80,true,"none",0.8]}};
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Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
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function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - eulo/javascript-watermark-resize: Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking · GitHub
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Watermark.js
Adds functionality to the JS Image Object allowing it to compress, resize, crop and watermark images.
Useful for uploading images straight to S3 without the need to resize prior.
####Basic usage
varimage=newImage();image.onload=function(){console.log(this.process());}image.src="path/to/image/on/same/domain.png";
Output Array, all ready to be sent to S3:
0: Blob
size: 864521
type: "image/jpeg"1: Blob
size: 68766
type: "image/jpeg"2: Blob
size: 14915
type: "image/jpeg"3: Blob
size: 2923
type: "image/jpeg"
length: 4
####With uploaded images
<inputtype="file" id="input" multiple/>
document.getElementById("input").addEventListener("change",function(){for(vari=0;i<this.files.length;i++){varfile=this.files[i],imageType=/image.*/;// Check file is an imageif(!file.type.match(imageType))continue;varimage=newImage();image.file=file;varreader=newFileReader();reader.onload=(function(img){// Closure to ensure safe passing of correct Imagereturnfunction(e){img.src=e.target.result;console.log(img.process());};})(image);reader.readAsDataURL(file);}},false);
####Options
All options can be modified by changing the defaults at Image().defaults prior to processing.
Note: If you wish to change or add a watermark, you should replace the string value with an Image Object
// Global defaultsvardefaults=wm.defaults={className: "watermark",type: "image/jpeg",position: "top-right",padding: 25,opacity: 0.8,watermark: {standard: "img/watermark.png?"+(+(newDate())),highres: "img/watermark-high-res.png?"+(+(newDate()))},sizes: {// width, height, crop, watermark, quality (if defaults.type supports it)large: [1280,768,true,"highres",1],standard: [700,420,true,"standard",0.8],low: [320,200,true,"none",0.8],thumbnail: [128,80,true,"none",0.8]}};
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
})();
GitHub - eulo/javascript-watermark-resize: Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking · GitHub
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Watermark.js
Adds functionality to the JS Image Object allowing it to compress, resize, crop and watermark images.
Useful for uploading images straight to S3 without the need to resize prior.
####Basic usage
varimage=newImage();image.onload=function(){console.log(this.process());}image.src="path/to/image/on/same/domain.png";
Output Array, all ready to be sent to S3:
0: Blob
size: 864521
type: "image/jpeg"1: Blob
size: 68766
type: "image/jpeg"2: Blob
size: 14915
type: "image/jpeg"3: Blob
size: 2923
type: "image/jpeg"
length: 4
####With uploaded images
<inputtype="file" id="input" multiple/>
document.getElementById("input").addEventListener("change",function(){for(vari=0;i<this.files.length;i++){varfile=this.files[i],imageType=/image.*/;// Check file is an imageif(!file.type.match(imageType))continue;varimage=newImage();image.file=file;varreader=newFileReader();reader.onload=(function(img){// Closure to ensure safe passing of correct Imagereturnfunction(e){img.src=e.target.result;console.log(img.process());};})(image);reader.readAsDataURL(file);}},false);
####Options
All options can be modified by changing the defaults at Image().defaults prior to processing.
Note: If you wish to change or add a watermark, you should replace the string value with an Image Object
// Global defaultsvardefaults=wm.defaults={className: "watermark",type: "image/jpeg",position: "top-right",padding: 25,opacity: 0.8,watermark: {standard: "img/watermark.png?"+(+(newDate())),highres: "img/watermark-high-res.png?"+(+(newDate()))},sizes: {// width, height, crop, watermark, quality (if defaults.type supports it)large: [1280,768,true,"highres",1],standard: [700,420,true,"standard",0.8],low: [320,200,true,"none",0.8],thumbnail: [128,80,true,"none",0.8]}};
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Javascript Image prototype library for adding: Bicubic interpolation resampling, cropping, and watermarking
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