JSONesityksen

JSONesityksen is a JSON-based specification for describing presentations, user interfaces and data-driven visuals. It aims to separate content structure from rendering logic by encoding slides, components and interactions in JSON.

The term is of Finnish origin; "esityksen" means "presentation" in Finnish. The concept emerged in the Nordic software community around the early 2020s as a lightweight, platform-agnostic approach to describe visual presentations without proprietary formats.

A JSONesityksen document typically comprises metadata, a slides array, and per-slide component definitions. Each component has a type (for example text, image, chart, video), a set of properties, and optional data sources. The schema may also specify transitions, timing, and layout hints. Validation can be performed with a JSON Schema.

Renderers translate a JSONesityksen document into target formats, such as HTML/CSS for web, native UI elements for mobile apps, or PDF exports. Some implementations support live editing, data binding, and offline rendering. Tooling ranges from small libraries to full-fledged authoring environments.

Usage and reception: It is used primarily in niche projects and open standards discussions. Critics note that its usefulness depends on the availability of compatible renderers and that a JSON-only description may lack the expressiveness of richer UI description languages.

See also: JSON, JSON Schema, UI description languages.