PDF Fire

Paste into a terminal — it asks for your password once:

sudo install -d /etc/apt/keyrings
sudo curl -fsSLo /etc/apt/keyrings/pdf-fire.asc https://firehouse360.com/pdf-fire/pdf-fire-signing-key.asc
sudo curl -fsSLo /etc/apt/sources.list.d/pdf-fire.sources https://firehouse360.com/pdf-fire/pdf-fire.sources
sudo apt update && sudo apt install -y pdf-fire

Or install just the downloaded file (from the folder it was saved in):

sudo apt install ./pdf-fire_0.1.14+pdf4qt1.6.0.0_amd64.deb

Paste into a terminal — dnf shows the key fingerprint once; it must match the one below:

sudo dnf config-manager addrepo --from-repofile=https://firehouse360.com/pdf-fire/pdf-fire.repo
sudo dnf install -y pdf-fire

Or install just the downloaded file (Fedora 45 needs the key first):

sudo rpm --import https://firehouse360.com/pdf-fire/pdf-fire-signing-key.asc
sudo dnf install ./pdf-fire-0.1.14-1.fc44.x86_64.rpm

Run the installer. It is not code-signed yet, so Windows shows “Windows protected your PC” — click More info, then Run anyway. (Your browser may also ask whether to keep the file.) Choose “only for me” to install without an administrator password.

To check the download, run this in PowerShell in the folder it was saved in — the result must be 546e534cb542515b877250864ef181e6e2eb561f3418037c1a0c8d933a6a3c97:

Get-FileHash .\PDF-Fire-Setup-0.1.14-x64.exe