In simple English
This tool lets you build complex web forms and questionnaires using simple data files. You define your questions, rules, and pages in a structured text format called JSON. The library then draws the form inside your web application and collects the answers. It works with React, Angular, Vue, and plain web pages without needing a special server. It is free to use under an MIT licence.
What it is
SurveyJS Form Library is a collection of frontend packages that separate form logic from rendering. The core package manages validation, conditional logic, and calculations, while framework-specific packages handle the visual display.
What it is good for
Solo builders who need to create multi-step wizards, quizzes, data-entry screens, or dynamic surveys without writing custom form state logic from scratch.
- Supports React, Angular, Vue, and plain JavaScript with native packages.
- Defines entire form structures, validation, and branching rules through plain text JSON.
- Includes over twenty built-in question types, signature capture, and conditional logic.
- Requires familiarity with JavaScript frameworks to integrate and style properly.
- Large feature set can add weight to your frontend bundle size.
- Advanced visual form builders and PDF export tools in the same product family may require commercial licences.
Writing custom multi-step form state management and validation logic by hand
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npm install survey-react-ui