Official Site: Holderjs.com
Official Repo: holder.js github
Holder CDN: cdnjs Holder Library
(Directly from the site)
Holder renders image placeholders entirely in browser.
Placeholders can have custom colors, fonts, resizing behavior, and rendering engine (Canvas/SVG).
Official Repo: placeholders.js @ github
Official Site: Placeholders @ github-pages
As of writing this entry, has not been updated in over eight years. :(
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Placeholders.js Default Config</title>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
</head>
<body class="placeholder-example">
<input type="text" placeholder="I have a placeholder!"><br>
<input type="password" placeholder="Password placeholders!"><br>
<textarea placeholder="Textareas too!"></textarea>
<script src="assets/js/placeholders.min.js"></script>
</body>
</html>
Website: Lorem Flickr
Always cool, and always a favorite. This site shows you how to use their image placeholder service to generate placeholders out of random images from flickr.
/width/length
: https://loremflickr.com/400/600If desired you can use a search query to generate images pertaining to something.
Website: W3 Schools
Originally w3 schools specifically focused on providing information and reference material to educate others to allow them to build their won html webpages. Over the years the knowledge base has grown, and now includes numerous programming languages, web frameworks, and even database syntax. It may not be exactly what you want, but it is considered a standard.
Website: coolors.co
Awesome pallette generation site. Can perform generation of color schemes from uploaded images. Awesome random color scheme generation engine. Allows the saving and modification of previous made themes.
Website: leonardocolor.io
Leonardo is a one of a kind tool for creating and managing color scheme systems for ui design, data visualization, and user interaction. It provides tools for color scheme creation, analysis, control, design and management of colors. Created by Adobe.