How to use Diva.js:
To browse through the pages within a document, simply scroll through the document panel using the scrollwheel, the scrollbar, the arrow keys or the page up/page down keys. To zoom in, click the plus button and the left or double-click a page within the document viewer. To zoom out, click the minus button or hold the control key while double-clicking a page. You can enter and subsequently exit fullscreen mode by clicking the icon in the top right corner.
To navigate larger documents, enter grid mode by clicking the box icon next to 'Go' button in the upper right, or go directly to a page by typing in the input box and clicking 'Go'.
You can also share a link to your current position in the document. Click the link icon and copy the text in the popup to share with colleagues.
To make adjustments to a page image, click the sliders icon at the top left of the page when in document mode. This will take you to image manipulation mode, where you can change contrast, brightness, rotation, and zoom by clicking on the icons under the mini-map in the upper-left corner of the page. Click 'apply' and you will see the results. The results are persistent, meaning next time you open the image manipulation mode, your changes will be intact unless you click 'Reset all'.
To download the image of a page, click the down arrow at the upper left corner of the page. You will be taken straight to the full image, where you can right-click on the image or drag it onto your desktop to save it.