Base64 PDF to be viewed in Internet Explorer 7

PDF.js Express Version

Detailed description of issue
PDF.js is not working in Internet Explorer 7,

Expected behaviour
PDF base64 format to be viewed in IE7. Editing is not required.

Does your issue happen with every document, or just one?
Not tried PDF.js trail, but PDF.js is not working in IE7

Link to document
{Provide a link to the document in question if possible}

Code snippet
{Provide a relevant code snippet}

Hey there!

I believe PDF.js only supports IE11+, same with PDF.js Express.