Online EJS Editor

Online EJS Editor enables authors to write and test EJS templates directly in the browser against a supplied data context. It targets front-end developers, template engineers, and build specialists who use EJS for server-side rendering or email templates. The tool validates syntax, renders HTML, and helps identify logic errors without a full server stack. It supports standard EJS tags (<% %>, <%= %>, <%- %>) and allows inclusion of reusable partials via a provided map, enabling modular template composition.

Conceptually, the tool performs a sandboxed render: it parses and executes template code with a JavaScript data object, while data inputs and partials are isolated from the host environment. The core value lies in rapid feedback, reproducible results, and safe experimentation with data shapes and edge cases. Users can paste a template, provide a JSON data object, optionally define partials or helper functions, and see the produced HTML in real time or on demand. The editor is framework-agnostic and compatible with common EJS practices, including conditional blocks, loops, and variable interpolation, which accelerates debugging and prototyping.

Key differentiators include the sandboxed execution model, explicit error reporting with line references, support for exporting both rendered HTML and the template, and the ability to compare output across different data inputs without deploying a Node.js server. Typical use cases include templating emails, server-rendered pages, and documentation snippets that rely on dynamic data. The tool is designed for teams requiring quick iteration, reproducible results, and safer experimentation than local copy-paste in an editor.