HTML5 file input type accept attribute not supported in IOS safari

I have a below code for the html5 file upload component to accept below formats

<input type="file" name="inputFileUpload" accept="application/pdf,image/jpeg,.jpeg,image/png,application/msword,image/gif,applic ation/vnd.openxmlformats-officedocument.wordprocessingml.document,image/tiff" multiple="" >

however, i see that application/pdf does not seems to be available for selection in IOS safari. though it is HTML5 supported media type i am unable to select the file while using icloud.

My questions is whether application/pdf as an "accept attribute" is supported in IOS safari.

Thanks