Forum Discussion

Jerichouy's avatar
Jerichouy
Brass Contributor
Mar 31, 2026

How do I stop Firefox from automatically opening any PDF I download?

Under Settings -> Applications, PDF is set to save file, yet every time I download a PDF, it is automatically opened and not by the windows default program associated with PDFs. How do I stop this from happening?

2 Replies

  • ThaddeusLyle's avatar
    ThaddeusLyle
    Copper Contributor
    Apr 04, 2026

    In Firefox, type about:

    config, then search for browser.download.open_pdf_attachments_inline

    Set its value to false.

  • Wrentdr's avatar
    Wrentdr
    Iron Contributor
    Apr 01, 2026

    Type ‘about:config’ into the Firefox address bar, search for ‘browser.download.open_pdf_attachments_inline’, and set its value to ‘false’.