a hacky file upload to indexedDB based on https://jquery.com https://www.dropzonejs.com https://github.com/gsantiago/vanilla-slider these helped: https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API/Using_IndexedDB https://hacks.mozilla.org/2012/02/storing-images-and-files-in-indexeddb/ https://itnext.io/integrating-dropzone-with-javascript-image-cropper-optimise-image-upload-e22b12ac0d8a http://stackoverflow.com/questions/9267899/ddg#9458996 to use: open index.html using an arbitrary local webserver
gruzilla/mediaindexeddbslider
a hacky file upload to indexedDB based on jquery, dropzonejs and vanilla-slider
JavaScriptNOASSERTION