Unable to open PDF/HTML/XML files directly in a browser in SharePoint 2010? The default configuration of SharePoint 2010 does not consider PDF documents safe for displaying in the browser. This script adds a new MIME type to the "AllowedInlineDownloadedMimeTypes" property list of the defined SharePoint.
 
Method 1
- Open the SharePoint Central Administration.
 
 ![Open-PDF-Files-Directly-in-Browser-1.jpg]() 
 
 
- Select "Application Management".
- Click on "Manage Web Applications".
 
 ![Open-PDF-Files-Directly-in-Browser-2.jpg]() 
 
 
- Select Particular Web Application .
- Got Ribbon and Select General Settings
 
 ![Open-PDF-Files-Directly-in-Browser-3.jpg]() 
 
 
- In the Browser File Handling section:
 
 ![Open-PDF-Files-Directly-in-Browser-4.jpg]() 
 
 
- Select "Permissive" and click "Ok".
 
 ![Open-PDF-Files-Directly-in-Browser-5.jpg]() 
 
 
- Clear the Browser Cache and open the PDF.
 
 ![Open-PDF-Files-Directly-in-Browser-6.jpg]() 
 
Method 2
Without changing the Web Application Settings (in other words Permissive and Strict).
This script adds a new MIME type to the "AllowedInlineDownloadedMimeTypes" property list of the defined SharePoint 2010 Web Application.
The script prompts you for the MIME type (for example application/pdf, text/html, text/xml) and Web Application URL.
The code shall run in the context of the Farm Administrators group member. 
# <#  
# .DESCRIPTION  
# 
# This script adds new MIME type to "AllowedInlineDownloadedMimeTypes" property list of defined SharePoint 2010 Web Application. 
# 
#  Script prompts you for MIME type and Web Application URL. 
# 
#  Code shall run in context of Farm Administrators group member. 
#  
 
If ( (Get-PSSnapin -Name "Microsoft.SharePoint.PowerShell" -ErrorAction SilentlyContinue) -eq $null ) { 
    Add-PSSnapin "Microsoft.SharePoint.PowerShell" 
} 
 
Get-SPWebApplication 
 
$WebApp = Get-SPWebApplication $(Read-Host "`nEnter Web Application URL") 
 
Write-Host `n"Mime Type Examples:"`n"application/pdf, text/html, text/xml"`n 
 
If ($WebApp.AllowedInlineDownloadedMimeTypes -notcontains ($MimeType = Read-Host "Enter a required mime type")) 
{ 
  Write-Host -ForegroundColor White `n"Adding" $MimeType "MIME Type to defined Web Application"$WebApp.url 
  $WebApp.AllowedInlineDownloadedMimeTypes.Add($MimeType) 
  $WebApp.Update() 
  Write-Host -ForegroundColor Green `n"The" $MimeType "MIME type has been successfully added." 
} Else { 
  Write-Host -ForegroundColor Red `n"The" $MimeType "MIME type has already been added." 
}