There has been an update to the conversion process for PDF's HTML5 using SVG (Scalable Vector Graphics) for a better HTML5 viewer experience , the HTML5 SVG viewer is a selectable option from the title settings. In this process we have found a potential bug with the SVG process that can in some cases oversaturate the color in images if the original PDF file color conversion setting output is either "CYMK" or U.S. Web Coated . It's suggested as we do with the standard flash conversion that your file be converted to "RGB or sRGB" if you utilize the new HTML5 SVG process. We have provided below how to process this conversion using Adobe Acrobat PRO, additionally you can output the PDF if you're using Adobe InDesign or Adobe Distiller to output to sRGB color format you can use the joboptions preset provide below. Refer to our recommended PDF optimization settings for additional information on optimizing your PDF.
In Adobe Acrobat PRO, select the Advanced tab (1), select Print Production (2) then select Preflight (3)
A new Preflight window will display, here you will need to select the option Convert to sRGB (1), then click Analyze and fix in the bottom right corner (2)
Save your file to a specified location on your computer and it is now ready to upload so it is compatible with HTML5 SVG