This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Is Firefogg safe to install in Firefox?

  • 3 replies
  • 1 has this problem
  • 46 views
  • Last reply by FXFx

more options

I need to convert MPEG movies to WEBM. One option is Firefogg (http://firefogg.org/) which installs an add-on in Firefox. But when I try to install http://firefogg.org/xpi/Firefogg-347.xpi, Firefox blocks it with this message: "Firefox prevented this site from asking you to install software on your computer". I have the option of "Allow", but hesitate - I don't see Firefogg among the available add-ons when I search Add-ons.

I need to convert MPEG movies to WEBM. One option is Firefogg (http://firefogg.org/) which installs an add-on in Firefox. But when I try to install http://firefogg.org/xpi/Firefogg-347.xpi, Firefox blocks it with this message: "Firefox prevented this site from asking you to install software on your computer". I have the option of "Allow", but hesitate - I don't see Firefogg among the available add-ons when I search Add-ons.
Attached screenshots

Chosen solution

"Allow" at your own risk from a non-secure host!

That Add-on .XPI should be coming from a secure server, a basic requirement for the last 3 or 4 years for add-on installation.

Has been available from the official Add-ons website since 2009. https://addons.mozilla.org/en-US/firefox/addon/firefogg/

Read this answer in context 👍 0

All Replies (3)

more options

I think it will be a good decision to not use this site as firefox prevent it. So Choosing allow is a right decision.

more options

Chosen Solution

"Allow" at your own risk from a non-secure host!

That Add-on .XPI should be coming from a secure server, a basic requirement for the last 3 or 4 years for add-on installation.

Has been available from the official Add-ons website since 2009. https://addons.mozilla.org/en-US/firefox/addon/firefogg/

more options

Then safe to use. Just installed it from the the Mozilla site. Works well. But it doesn't come up in a search for "firefogg" in Firefox -> Tools -> Add-ons

Modified by FXFx