What makes a great screenshot mockup tool? I'm building one and need feedback

Hi everyone 👋

I'm currently building a screenshot mockup tool and researching what actually makes these tools useful for founders, marketers, and developers.

There are already several tools in this space, but I’ve noticed a few common problems:

• Too many design options that slow down workflow

• Complicated UI for simple tasks

• Slow export performance

• Limited customization for branding

I'm curious to hear from the community:

What do you think makes a great screenshot mockup tool?

Some things I'm currently thinking about:

• Fast export

• Clean UI

• Background presets

• Device frames

• Branding presets

But I'd love to hear what others care about most.

What features would you want in a screenshot tool?