ELI5 AI Blog

Plain Language Communication: Best Practices for Accessible Writing

2026-08-02

Plain language is not about dumbing down your content. It is about making information accessible to the widest possible audience. The US Plain Writing Act of 2010 requires federal agencies to use plain language, and the World Health Organization publishes plain language guidelines for health communication.

Core principles of plain language

Use short sentences. Prefer active voice. Define technical terms. Use headings and bullet points. Write for your reader, not for yourself. These principles are simple but hard to apply consistently.

The challenge of audience diversity

Plain language guidelines assume a single target audience. But what if your audience includes both experts and laypeople? Writing for the lowest common denominator means losing the experts. Writing for the experts means losing everyone else.

How ELI5 AI solves this

ELI5 AI generates four reading levels from a single source text, so you do not have to choose. You can share the Adult level with experts and the Age 10 level with a general audience — all from the same simplification request. This approach respects every reader without compromising on accuracy.

Try it yourself

Paste any document into ELI5 AI and see how plain language principles apply at four different reading levels.