Upside-down web Firefox

Download Upside-down web

By: flweb
Download Upside-down web (current and past versions) for Firefox
Latest Version: 1.1 Updated: 6 years ago

Ready to install?

Upside-down web is available to install from Firefox Add-ons Store and for download from this page.
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Available versions

You can find the current and older versions of Upside-down web here. You can download the archived versions or inspect their source codes.

As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
VersionDownloadSizeDownload countTimestamp
1.1XPI · ZIP · Source code25.18KB02020-07-08
1.1 25.18KB
2020-07-08 · 0 downloads

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
  • Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

  • In Firefox browser, go to about:addons to open Add-ons Manager
  • Click on ⚙, Install Add-on From File
  • Select the Upside-down web ZIP file from step 1. Upside-down web is now installed on your browser.

Best Upside-down web Alternatives

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