They did, it’s often a CLI interface because it’s incredibly flexible. ffmpeg and imagemagick are quite easy for basic things.
Building a cross-platform GUI is a pain, and hosting a website costs money. Building a cross-platform CLI is incredibly easy, which is why it’s so popular.
Some of these tools have GUI frontends or alternatives, some don’t. The more niche you go, the harder it’ll be to find a reasonable GUI, and I consider PDF to JPEG pretty niche.
They did, it’s often a CLI interface because it’s incredibly flexible. ffmpeg and imagemagick are quite easy for basic things.
Building a cross-platform GUI is a pain, and hosting a website costs money. Building a cross-platform CLI is incredibly easy, which is why it’s so popular.
Some of these tools have GUI frontends or alternatives, some don’t. The more niche you go, the harder it’ll be to find a reasonable GUI, and I consider PDF to JPEG pretty niche.
No. This does not compute.
You don’t have to host a website. Just make software that works like the website and runs locally.
But not niche enough that these websites don’t exist.