jquery_sample
http://getbootstrap.com/javascript/
http://maczniak.github.io/bootstrap/javascript.html#overview
Autocomplete
http://www.webdesignerdepot.com/2012/05/foxycomplete-advanced-autocomplete-search-images/
http://www.tutorialspoint.com/jqueryui/jqueryui_autocomplete.htm
Captcha http://akiraly.github.io/cage/index.html http://zetcode.com/tutorials/jeetutorials/captcha/
Image capture http://mrbool.com/java-image-processing-capturing-images-with-java-and-html5/30659
Just Idea API Specification for developer.
Convert from Html to PNG https://github.com/tsayen/dom-to-image https://stackoverflow.com/questions/10721884/render-html-to-an-image/32776834#32776834 https://stackoverflow.com/questions/44494447/generate-and-download-screenshot-of-webpage-without-lossing-the-styles https://jsfiddle.net/g7ab2rc9/1/
Download multi-images as Zip https://stuk.github.io/jszip/