Tails verification extension

For the Tails project—that I've been contributing to since 2014—I worked on adapting an existing browser extension, and accidentally rewrote nearly the entire code base to make it faster, cleaner and nicer. The extension can now verify hash sums of Tails installable images in two formats: ISO or IMG, depending if users want to install to DVD or to a USB stick.
The extension runs in Firefox and Chrome, and the code could also be embedded in a web page itself.

It might be more interesting to actually look at the code (see modifications made in 2018) than at the image. The code is in use on the Tails website.

Client: Tails