DangerZone (Code) is a tool to convert possibly malicious documents into sanitized PDF documents.
It is intended for anyone, especially targeted people like journalists, that may get sent infected documents.
Dangerzone uses containers for a safe, isolated environment, to process the documents. Thus it is inspired by “Convert to TrustedPDF”, which is found in QubesOS.
It uses Podman to do that, which is preinstalled on Fedora, at least on the atomic desktops.
Installation
Install on dnf Fedora
Follow their instructions
If podman is missing:
sudo dnf install -y podman
Install on Fedora Atomic Desktops
- Add the repo
curl https://packages.freedom.press/yum-tools-prod/dangerzone/dangerzone.repo | sudo tee /etc/yum.repos.d/dangerzone.repo
- Install the software
rpm-ostree install dangerzone
If the program is broken for you too, feel free to help here 
Your purported link under “Install on dnf Fedora” appears not to work.
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From documentation at your second link (the github site) it seems that dangerzone relies on the Docker Desktop which appears to be problematic for fedora since docker apparently has problems on fedora and it seems that podman is recommended instead.
I don’t use either and thus won’t test it except on a VM, but it seems a really good idea.
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Oh interesting! That is strange and makes little sense, might be that they have a docker requirement?
They use containers for isolating the cleansing process. But if that equals to docker, it is indeed a problem
I actually misunderstood what I read.
This from the Code link you posted.
Dangerzone was inspired by Qubes trusted PDF, but it works in non-Qubes operating
systems. It uses containers as sandboxes instead of virtual machines (using Docker
for macOS and Windows, and podman on Linux).
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Oh thats good! Cool that they use Podman on Linux? Dont know other projects doing that