ECMA Visualizer

Name: ECMA Visualizer
Rating: 5 (3 reviews)
Author: korea.univ.plrg

Provides Example Programs for ECMA-262, the ECMAScript Language Specification.

As of June 2026, ECMA Visualizer has 26 users and a 5.00/5 rating from 3 reviews in the Developer Tools category.

korea.univ.plrg Developer Tools

Chrome Web Store ↗.crx

Users0%

Rating0%

5.00

3 reviews

Reviews0%

Version

1.4.0

Manifest V3

History

6 snapshots

Tracking since Apr 8, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 8, 2026	26	5.00	3	1.4.0
Apr 22, 2026	27	5.00	3	1.4.0
May 2, 2026	25	5.00	3	1.4.0
May 10, 2026	26	5.00	3	1.4.0
May 28, 2026	28	5.00	3	1.4.0
Jun 5, 2026	25	5.00	3	1.4.0
Now	26	5.00	3	1.4.0

Permissions & access

Permissions: sidePanel
Host access: https://tc39.es/*, https://262.ecma-international.org/*

Screenshots

About

This Chrome extension is an implementation of the tool presented in the paper “JSSpecVis: A JavaScript Language Specification Visualization Tool,” accepted for publication in the Demonstration track at FSE 2025.

This Chrome extension is developed to support an intuitive understanding of the javascript specification by providing example programs for each part of the specification with a call-path context selected by the readers.

In addition, the extension supports a debugging feature called resume, which allows users to start debugging from the exact position of the selected step on our debugger on an external website.