Current Firefox versions have enabled a built-in PDF Viewer that doesn't have all features that other PDF readers like the Adobe Reader have or may not function properly otherwise.

You can change the action for Portable Document Format (PDF) from Preview in Firefox to use another application like the Adobe Reader or set to Always Ask in "Firefox > Options/Preferences > Applications".

You can set the pdfjs.disabled pref to true on the about:config page to disable the build-in PDF viewer.

You can check the value of the plugin.disable_full_page_plugin_for_types pref on the about:config page and remove the application/pdf part if present or reset the pref to the default via the right-click context menu if you want to display PDF documents in Firefox with another application (i.e. not the built-in PDF Viewer).

See also:

• https://support.mozilla.org/kb/view-pdf-files-firefox-without-downloading-them

The latest stable version of the built-in PDF viewer is available as an extension and this version can possibly perform better than the version shipped with the current Firefox release.

The latest stable version of the PDF Viewer (pdfjs) extension:

• PDF Viewer: https://addons.mozilla.org/firefox/addon/pdfjs/

Latest development version of the PDF Viewer (pdfjs) extension for Firefox:

• http://mozilla.github.io/pdf.js/extensions/firefox/pdf.js.xpi

Many thanks for your helpful reply. I have not managed to get the correct display from your first suggestion. My Firefox was already using the Adobe pdf.

How do I find "about config"?

Also is there anyway for the website developers to ensure that any customer can get at the display from "Download Brochure" facilty? Most customers wouldn't be able to even ask these questions!

Monty Law

To open about:config just copy & paste "about:config"(without the quotes) in the browsers address bar and then press Enter.

The second part of your last reply is not clear to me. Can you please explain?

I meant to say is there any way that a website can display a "pdf" file so that it can be read by all, whichever pdf reader may be available?

(I know there are various versions of pdf readers.)

That is not related to Firefox support but here is the answer: It is PDF readers' responsibility to be able to display PDF files. It is not PDF files' responsibility to be able to be displayed by all PDF readers.

Please try the suggestions by cor-el.

I have tried the various ways you suggest. I am not sure I am able to understand all the "about.config" features.

Almost all the alternatives to Adobe Reader in the Tools/Options/ Applications just produce a blank page.

As it is details of our house that produces these blank text pages, we are concerned that if it happens to us, it must happen to others.

Heres to a new update to Firefox, but many thanks for your efforts.

Can you post the link to the PDF file?

http://symondsandsampson.reapit.com/index.php?action=moduleprocess&_process=output_pdf&_path=content%2FProperty_Search%2FDetails%2F&_moduleclass=RPW_property_details_obj&_moduleclasspath=classes/modules/rpw/&_moduleid=544d6d3c09cf422b59979cb028bbbfc2&_section=mainContentRow1Column1&identifier=sales-sasrps-STU130277

I hope this is the correct one. It is the result of clicking on "Download Brochure".

Many thanks for your trouble.

Monty Law

This is a bug in the default built-in pdf viewer. There is nothing wrong with your PDF file. See the attached screenshot to see what I got when I opened the link in my Firefox. I am using Firefox 26.0 on Windows 7. When I opened the link I saw that some texts were missing. I also saw the notification from Firefox 26.0:

This PDF document might not be displayed correctly.

I opened the PDF file in Google Chrome and it loaded perfectly. I will report this bug. This bug will be fixed in a future release of Firefox.